HomeMy WebLinkAbout20163545.tiff100 -year Existing
44.
Water Surface Pr& i e
47-
4765 -
4764 -
C 4763-
4-
4761-
4700-
4759
Crossing - C-22, Design Discharge - 0.0 cfs
Culvert - C-22, Culvert Discharge ' 13.8 cis
-20 -10
0 10 20
r
6:0
70
80
30 40
Station (ft)
r
f
Critical
O
Normal
�'l
Profile
X
Taitwater
Headwater Streambed
a
HY-B Analysis Results
Customized Table
Culvert Crossing: C-23
Discharge
Names
Total Discharge
(cfs)
Culvert Discharge !
(cfs) 'Elevation
i
I
Headwater
(f)
Outlet Depth (ft)
Outlet
(Ws)
Velocity
E10
18.16
10.13
4636.23
1.22
.55
:E50
40.35
10.47
4636.35
1.24
.69
E100
57.18
10.67
4636.43
1.25
.77 . . mi
Culvert
ID
Length
(ft}
Inlet Invert
Elevation(ft}
Outlet
Elevation
Invert
(ft)
Slope
(ft
Type
Shape
eWidth
Dimensions
(ft) Height (ft)
C-23
90.0
4633.3
4633.2
0.()Ol
RCP
Circular
L5 }
--
Culvert C-23 Water Surface Profiles
10 -year Existing
Crossing - C-23, Design D sch Re - 210 eh
tai- C-2,3, Culvert me rge - 16d. cis
4636_0 --
4635.5-
E
.4350
C
0
4634 5 -
>
4634_0 -
46315
IMO
U-
aro
i
IMF
PM'
Pain
1,11TT7*T•
a
-20
0
20
40
Station (It)
60
BO
100
Gntical
5O -year Existing
I _
O
Normal
Profile
I _
Taslwater
Headwater
Strearnbed
i
$ Water Surface 7"ilirlinillint,
tic
t
o
- Crossing C-23, Design Discharge - 25.0 cis
Culvert - C-23, Culvert Discharge - 10.E cfs
�#
46 -- - --- - - -•-- - -- - ..- -- - ...--" -- -
s 4
-
M
463
46355E
1‘..
r
r
4835.0 -1
c
_
1
a II
•Y
_
' • 4634.5........_
N.
—
_.r._____-
1
{�I� �
4834.0
4633.5- -
I—
r•
.
_ - ---- MMM■Ih\.._-r--__..--------- \ANN\!s\.... --
x
I
I-
-
-
20 40
Station )
B6 100
•
Critical
O
Normal
V
Profile
ISilwater
• _
Headwater
Steambed
100 -year Existing
Water Surface Profile
�� �F
b � tiY'r
Crossing - C-23, Design Discharge - 25.0 cis
Culvert - C -B, Culvert Discharge -10.7 eh
4636.5-
46363.
• Y35
j1
i
4635.0
ED 4634_5-
4634.0
4633.5-
4633.0
IMO
1� •�Jeal&A Wily assamanansaanamaMa -ass-Winsssain ',alum nee mean nn n. Mewern*
rr ruIwaalwtl.�...
Ilitacteastaim
...w--......... ....... .;
-20
0
20
40
Station 01)
60
80 100
Critical
r
0
Normal
V
Profile
Tailwater
I
Headwater
C
Streambed
Discharge Names
total Discharge
cfs)
invert Discharge
(cfs)
Headwater
Elevation (ft)
Outlet Depth (ft) Outlet Velocity
(fps)
El 0
.15
7.15
677.99
0.70
.. 31
E50 ' 2.31
2.31
•679.28
1.32
8.52
E100 OO
# 7.87 .7.57
' 679.83
1.50
8.98
Culvert Length
ID (ft)
Inlet Invert
Elevation 00
Outlet Invert
Elevation (ft)
Slope Dimensions
(ft/ft) Type Shape Width (ft) Height (ft)
C-24 75.0 4676.7
4675.9
0.411 RCP Circular lin --
G
4
I
10 -year Existing
46815
4681.0
480.5
4680.0
4679.5
4679.0
4678.5
4678.0
4877.5
4877.0
4676.5
4676.0
■
Critical
-
Imp
4
,,,I
Culvert C-24 Water Surface Profiles
_ • I.. Y.l .✓Jr m 1,r 7._ Wel"'
Crossing - C-247 Design Discharge a 0.0 ct'S
Culvert - C-2& Culvat Discharge - 71 cis
I I I i
I I I I
I i
1 I I I
-20 -10 0 10 20 30 40
SO -year Existing
or
Normal
prr
Profile
I I I i
Station (ft)
Tailwater
1 1 1 1 I I i I
70
till 1 6 1 1
Heater
kill
0
Streambed
Water Surface Pnf4e
4681.5
4681.0
4680.5
4680.0
4679_5
S 4679.0
Z. 4678.5
4878.0
4677.5
4677.0
4676,5
4676,0
Crossing - C-24, Design Discharge - OM els
Cub/art - C-24, Culvert Diktarge- .l,3 ifs
I
�r...... Ma Y.YY41111ii NO it M fl
I I I I
-20 -10 0 10 30 40
60
70
80
1 I d 1
I 1
I I i I I I 11 11 1 I
I I I I 1 1 1 1 I I I I
Station 0f )
4.
kill 'I I I
lilt
0
I _
Critical
Normal
LLIFJ
Profile
Tai Hater
Headwater
Streambed
100 -year Existing
Water Suriace Profile
IMMIr
TOM
4677.5-
4677.0-
4676.5-
4675.0-
4
-20 -10
Station (ft)
Crossing - C-24, Design Discharge - 0.0 cfs
Culvert - C-24, Culvert Discharge - 2 T6 c t
r 20 30 40
50 130 70 80 90
-
r•
Critical
Normal
V
Profile
Tar Ater
[_t
Headwater
Streambed
HY-8 Analysis Results
Customized Table
Culvert Crossing: C-25
' iiseharge
Names
(it's)
ota1
Discharge
Culvert
(Cfs)
Discharge
Headwater
Elevation (ft)
Outlet
a
Depth (ft)
Outlet
(Ws)
Velocity
E10
714
7.14
4670.11
1.03
5.51
ESC
7.04
9.79
4670.77
1.21
6.43
E100 CO
30.80
9.8
4670.80
1.21
6.45
Culvert
ID
Length
ft
Elevation
Inlet Invert
Outlet Invert
Elevation (ft}
Slope
Tip.
Dimensions
ape
Width (ft}
Height (if)
C-2.5
47.0
4668.3
4668.0
0.007
RCP
Circular
23
--
Culvert C-25 Water Surface Profiles
1O -year Existing
1.. Water Surface Pt
Crossing e C-25, Design schar e - + .0 cfs
Cwt - C -A5, Cult Discharge - 7.1 cfs
4670$ -
4670.0-
4669.5-
c
1p
W 4669.0-
4668.5-
IOU
i
WON
�- -........ ••• .....-- - ---•.
4668_0-i
I
1b
20 31
Station (ft)
410
50
I _
■
I
Critical Normal
50 -year Existing
T
Profile
Tallwater
Headwater
Streambed
Water Surface Profile
-
Crossing - C-25, Dsi D h ge - 0.0 cl
- C-25, Culvert E&harge - 9..8. cis
a
�YYiiHiYYYYiii •i{YYMHMiiFMHMHYiiia
467115-
4670.0
.
is
L
et
_____•••••.... ........-1
i.
.•1 •••-••••• •aa __
.JJ
7. •a.1•••• !ii •-fit. -111
I
9.0
.4668.5 -1
1�
.
u
4668.0--
L
-1
t� 10 20 30 40 a0 60
Station (It)
y
Cntical
0
Normal
Profile
Tail ter
Headwater
Sties rred
As)
100 -year Existing
Iit Water Surface Profile
Crossing - C-25, Design Discharge - 0.0 cfs
Culvert = C-25. Culvert Discharge - 93 cfs
4670.5 J
4670.0-
_1 4669.5
rg
4669 0-
4668 5-
4668.0
,•0
-10
0 10
20
Station (ft)
30
40
50
60
1*
Critical
0
Normal
Profile
TaiIwater
r
Headwater
r°1
Streambed
HY-8 Analysis Results
Customized Table
Culvert Crossing: C-26
Discharge
Names
Total
(cfs)
Discharge
Culvert Discharge
(cfs)
Headwater
Elevation
(ft)
Outlet
Depth (ft)
Outlet
(Ws)
Velocity
El 0
4.44
4.44
4629.22
0.36
6.14
Di
0
4.44
4.44
4629.22
0.36 IP::'.05
6.14
E50
7.79
7.79
4629.47 N0,48
D50
7.80
7.80
4629.47
x.45
7.09
E100
8.90
8.90
4629.55
0,53
7.14
D100 0
8.90
6.90
4629.55
0.53
7.14
Culvert
ID
Length
(ft}
Inlet
Elevation
Invert
(t)
Outlet Invert
Elevation D O
Slope
( /ft)
T y
Dimensions
Width (ft)
Height
(ft}
C-26
110,0
46283
4627 ..0
0014
RCP
Elliptical
3.8
2.2
Culvert C-26 Water Surface Profiles
10 -year Existing
Water Surface Profile
A
Crossing - C-26, Design Discharge - 0,0 cfs
Culvert • C-24, Cart Discharge - 4A cfs
4631.0
4630.5
46.0
4629.5
0
4629.E
•
4628.5
4528.0
4627.5
4627.0
Station (ft)
o
Critical Normal
5Oayear Existing
1” Water Surface Pry
Profile
n
Tailwater
Headwater
Streamted
Crossing - C-26, Design Discharge - 0.0 cfs
Culvert - ca Culvert Discharge - 71 els
4631.0 -
4630.5 -
4630.0 -
L
; 4629.0
46128.5 -
4628.0-
4627.5-
4627,0 -
NMI
--
'4.
--a
.41
- 0 20 40
Station (ft)
80 100 120 140
•
Critical
0
Normal
V
Profile
Mal
Ta i wafer
Headwater
0
�1
Streatnbed
100 -year Existing
a _a.
47. Waiter Surface Profile
J- I
e
_. ._C.r•J.J._`.J . •.
;'mrs:-.._-••••• • ri• v.. • •:•y".n. IfY:11mv4. .va•r..arrc•y.rtr: 1
1.1
4631.0
4630.5
4630.0
4629.5
. 462W0
i 4628.5
4629.0
46275
4627.0
Crossing a C-26, Design Discharge - 0.0 cfs
Culvert - C-16 Culvert Discharge - 8.9 cfs
I I
1 I
I I
I
tat
0
I III II
2b 40 60 $0
Station (ft)
i 1
160
1 1 1 L I
tie
Critical
0
Noel
10 -year Proposed
V
J
Profile
•
• _
Taihvater
Headwater
Streamtied
Water Surface
-,Pr .
. .
P fate Su Plane
4628.0-i
4627 5
462T0
I I I I I I I I I I I [ III 1
20 40 do
Station (it)
!
is as oils al
1fWahti teNtecrkiteltaott Vn=....--.t t ...
.......I......._..r _.�._....._�...._.....�.....- r----- -
Critical
C
Normal
Profile
• _
Tailvvater
Headwater
G
Strearnbed
50 -year Proposed
4631.0-
4630.5 -
4.30.0 --
it
llJ2rl 5 --
4629,0--
0
W 4628.6-
4628_0-
4627.5-
4827.0 -
MIMEO
MOS
4
U._..1 I 1 1
-20 0
Crossing - C-26, Design Discharge 0.0 cis
20
Culvert - C-26, Curt Discharge - 71 ifs
40
1 I
60.
Station Up
I I
801
10
120
140
U
Critical
100 -year Proposed
0
Normal
Profile
Tal titer
Headwater
0
Streambed
■ Water Surface Profile
al,. ma. •...V _.1�•l. ale • ••
-• .466,0•.••.. ••••
&Li li.n-.. •... •e• ••.F}: -T• Mt* r1/4.4.1- •....-.•• .. .t..- hkn•- i 1.• A.. .. Y' 4t a. a . i• ev1.CN•mM
Crossing - C-26, Design Discharge - 0.0 cis
cuivat - C-26, Culvert Discharge - 8.9 cfs
4631.0-
4630.5-
4830.0-
,6g-
4629.5 -
c
4620.0
i 4628.5-
4628.0-
4627.5
4627.0
Se.
den
aims
sem
pelf
IIMI
r i i I 1
dr—
I
i
i t i
f.v it ..s--
I
-20 0 20 40 60
Station (I
80
100.
120
140
•. Y.11 Y\
• n
•
:•-� ,.;. .�f.u•.�y1 Y°Y YV
rin
Critical
\
a
Normal
Profile
Tailwwa.ter
4 -
Headwater
Stream bed
F
L�
LE
PLEASE SEE
r%fllrIKjAI _ ruLL�
APPENDIX E.3
Culvert Designs
1612 SPECHT POINT ROAD, SUITE 105
CART COLLINS, COLORADO 80525
770) 484-7477 ? mfo' !I-w.cam
ti
iou 2an
SCALE' 1'+244'
404
Farnsworth
GROUP
1612 5PECHT PO4NT ROAD, SUITE 105
FORT COLLINS, COLORADO 80525
(971:11484-7477 ? Jnta i?1.w.com
wvw f -w corn
Engineers Archifccti I Surveyors I Scienii±b
sbuE
1M Date: Deecnptinn:
Project Status
NOT FOR CONSTRUCTION
PROJECT
Weld County
Weld County Master
Drainage Design
Services
Weld County, Colorado
Dale:
Design/Drawn:
Reviewed:
Book No.:
06/08t2016
JC
5NEET TITLE
STORM DRAIN 1 & 2
SITE PLAN
MEET MVIN R
Cl
Project No.:
0151255.00
1J
I1
G
F
E
•
4630
4625
4620
4615
4610
4605
4600
6
4
17" CONCRETE PIPE 'I
FL=4670.2'3
1$ F.E.S. (2 TOTAL)
STA. 1+17.37
N 440416,65
E 250799,19
art
3 e" F,E.s, (2 TOTAL)
STA 1+17,31
INV. ELEV = 4511.06
55.46 LF —1 B' RCP EACH
(2 TOTAL),
ASPHALT
TYPE LRIP RAP D50■r
T=1.5'.L=4.5',W=B'
)SEE SHEET CT FOR DETAIL)
r h9' RCP (TOP SmASHED)
fL=48t19t78
fir
air F,E,S, {2 TOTAL
STA, 1;72.77
N 400421.26
E 250154,46
WCR 60.5
STORM DRAIN 'l
55.46 LF - 16' RCP EACH
12 TOTAL) CIA0%
EXISTING GRADE
*PIPE CENTERLINE
TYPE L RIP RAP 050 = r
L= 4.5', Via 8`
(SEE SHEET CT FOR DETAIL)
18" F,E,3. (2 TOTAL)
STA 1+72.77
INV. ELEV 4610..65
oe
p
r
li
_
4.
+rli
�'
I
0+50
1+00
STORM DRAIN el
2+00
A
teg
ST
4630 4630
4625 4625
4620 4620
4615 4615
4610 4610
4605 4605
4600 4600
2+50
ASPHALT
1+00
2+00
O4 -5O
ilE
W RCP (roP SMASHED)
FL= 4609.78
'NCR 60.5
1+00
11" F.E.S.
STA, 14.13,93
N 400353.1$
E 250995.19
iS-F.E.S.
STA 1+13.93
INV, ELEv = 4611.95
ASPNAL F
47,04LF-1$"CMP
STORM DRAIN 2
MINIMUM
COVER
47.0OLF-1$"OAP
0.50%
1B" F,E,S.
STA,. 1+60,93 __ _ - _ N 400360.21
E 254f44.$B
AE
TYPE L RIP RAP DSB ■ 9"
T■t.5',L■3'.W■3'
(SEE SHEET O7 FOR DETAIL)
EXISTING GRADE
*PIPE CENTERLINE
r,-- of —
i
0 10 20 40
SCALE: 1"=20`
NOTES:
1. ALL GMP FLARED END SECTIONS SHALL INCLUDE TOE PLATE PER
DETAILS.
2. RCP CULVERT FLARED END SECTIONS SHALL BE CONNECTED BY
CONCRETE JOINT FASTENERS PER DETAILS.
S. CONTRACTOR SHALL ENSURE CULVERT COVER MEETS OR
EXCEEDS MINIMUM COVER SHOWN ON DETAILS.
4. SEE BEDDING DETAILS FOR CMP AND RCP CULVERTS ON DETAILS.
5. ALL RCP FLARED END SECTIONS SHALL INCLUDE THE END
SECTION WITH CUTOFF WALL SHOWN ON SHEET CD2-
S. CONTRACTOR RESPONSIBLE FOR TRAFFIC CONTROL PLAN AND
COORDINATION WITH WELD COUNTY.
7, CONTRACTOR SHALL REVEGETATE DISTURBED AREA WITH WELD
COUNTY APPROVED SEED MIX.
6, ANY EXISTING PIPE (SI THAT WILL BE REPLACED SHALL BE
REMOVED AND DISPOSED OF OFF -SITE BY CONTRACTOR.
TYPE L RIP RAP O50 = B"
TsL5',L■3'.W=$'
(SEC SHEET C7 FOR DETAIL)
0.50%
16"
STA 1+84.93
INV. ELEV a 4611.05
STORM DRAIN 2
4630
4625
4620
4615
4610
4605
4600
2+50
Farnsworth
GROUP
1612 SPECHT POINT ROAD, SUITE 105
FORT COLLINS, COLORADO 80525
{97Q) 484.74771 nfa@f-w.com
WNICV4 f-w.com
Engineers Architect, [ Surreyora [ Scientish
Sit
V Date. Dtaciptian:
i
Project Status
NOT FOR CONSTRUCTION
FIROJEC1
Weld County
Weld County Master
Drainage Design
Services
Weld County, Colorado
Date:
DesignlDrawn:
Reviewed:
Book No.:
06/08/2016
RL
JC
91-IEET TITLE.
STORM: DRAIN 1 & 2
PLAN & PROFILE
*CC Pi
C2
Project No.: 0151255.00
1612 SPECHT POINT ROAD, SUITE 105
FORT COLLINS, COLORADO 88525
{9 701 484.7477 / infe@i-w.com $-w.rnm
a
8
�e.drg 6/14(2011
Pity'Qig‘pesitr Services
Weld Cwnty Mestat Lkai
1 2
4
5
7
J
E
D
1
B
o l
"A
a
6
8
4620
4615
4610
4605
4600
4595
4590
TYPE L RIP RAP D50 = 9"
T=1.S',L=3',W■3'
(SEE SHEET CT FOR DETAIL)
t>e
1b" F,E.S,
STA. 1+24.73
N 40041&.16
E 253249.44
TYPE L RIP RAP DSO = 9" —
T=1.5'.L=3',Wc3'
(SEE SHEET 07 FOR DETAIL)
0 Sob,
18' F.E.'
STA 1+24/.
INV, ELEV =4603.7G
ASPHAL r
WCR 60.5
Ie"F.E.S. - _
STA. 1+51.28 _
pr N 400418.81
-E 253287.18 —
38.53 LF -15" CMP
STORM DRAIN 3
38.53 LF -18" CMP
2 0.50%
-tear
EXISTING GRACE
g PIPE CENTERLINE
vr
F.E.S.
STA 1+83.26
INV. ELEV - 4603-8g
r
49
t
El; IZI
ri a
I -
a.
rICI gk
0+00
1+00
STORM DRAIN 3
2+00
4620
4615
4610
4605
4600
4595
4590
2+5O
4620
4615
4610
4605
4600
4595
4590
WCR 60.5
TYPE L RIP RAP D50 ■ 9"
T= 1.5', L 3',W=3'
(SEE SHEET C7 FOR DETAIL)
--
44
s— of
x
1+00
X
16" F.E.S.
STA. 1+18.4S
N 400419.82
E 253361.76
TYPE L RIP RAP DSO ■ 9"
T=1.5',L=3',W=3'
(SEE SHEET C7 FOR DETAIL)
0.SOM- -
18" F.E.S.
STA 1+19.4'5
INV. ELEV = 4604.2$
18" FiE,S.
STA, 1+54.58
N 400422.33
E 253396.72
35.13LF-18"CA1P
STORM DRAIN 4
35.13 LF -1>3" CUP
420.50%
1+78 '
_---1
EXISTING GRADE
@ PIPE CENTERLINE
18" F.E.S.
STA 1+54,58
ELEV = 4804,44
0
MI PO wml
SCALE: 1"=26
10
20
40
NOTES:
1, ALL CMP FLARED END SECTtCNS SHALL INCLUDE TOE PLATE PER
DETAILS.
2. RCP CULVERT FLARED END SECTIONS SHALL BE CONNECTED BY
CONCRETE JOINT FASTENERS PER DETAILS.
3, CONTRACTIn SHALL ENSURE CULVERT COVER MEETS OR
EXCEEDS MINIMUM COVER SHOWN ON DETAILS.
4. SEE BEDDING DETAILS FOR CMP ANC? RCP CULVERTS ON DETAILS.
5. ALL RCP FLARED END SECTIONS SHALL INCLUDE THE END
SECTION WITH CUTOFF WALL SHOWN ON SHEET CD2,
S. CONTRACTOR RESPONSIBLE FOR TRAFFIC CONTROL PLAN AND
COORDINATION WIN WELD COUNTY.
7. CONTRACTOR SHALL REVEGETATE DISTURBED AREA WTH WELD
COUNTY APPROVED SEED MIX.
6. ANY EXISTING PIPE (SI THAT WILL BE REPLACED SHALL BE
REMOVED AND DISPOSED OF OFF -SITE RY CONTRACTOR.
CO
I Oa
0
a
in
v
s
0+50
1*00
STORM DRAIN 4
2+OO
4620
4615
4610
4605
4600
4595
4590
2+5O
-J
Farnsworth
GROUP
1612 5PECHT POINT ROAD, SUITE 105
FORT COLLINS, COLORADO 8O525
197O) 484-7477 / infci f.w,com
wwwf-w eam
Engineers I ArctlitQch I Surveyors ( Scientists
Isaua
I Date: Description:
1 Project Status
NOT FOR CONSTRUCTION
Weld County
Weld County Master.
Drainage Design
Services
Weld County, Colorado
Date:
Design/Drawn:
Reviewed:
Book No.:
maErrrrrtt
06/0812016
RL
JC
STORM DRAIN 3 & 4
PLAN & PROFILE
SHEET NIJOiliER
C4
Project No.:
0151256.00
0,049 6/14/2616
.inner P:\2015\01512VADO Wad County Master Dmin PinANYOCOgri
4620
4615
4610
4605
4600
4595
4590
TYPE L RIP RAP D50 a 9"
T=1.5', L■3'"W=3'
(SEE SHEET C7 FOR DETAIL)
1+00
24.00
0+50
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t jn
1ff' F.E.S.
STA. 1+22.33
N 400418.69
E 253554,54
TYPE L RIP RAP D50 = 8"
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(SEE SHEET Cl FOR DETAIL)
0.50%
18" F.E.S.
STA 1+22.35
INV. ELEV o 4605.23
ASPHALT
WCR 60,5
49.07LF-IrOMP
STORM DRAIN 5
GE
18° F.E.S.
STA. 1+70.40
- N 400421.06
E 253602.56
i
EXISTING GRADE
in a PIPE CENTERLINE
0,35%
14" F_f<S.
STA 1+36.40
INV, ELEV = 48055.47
48.07 LF - 18" CMP
It 0.50%
STORM DRAIN 5
x
4620
4615
4610
4605
4600
4595
4590
2+50
4620
4615
4610
4605
4600
4595
4590
TYPE LRIP RAP050■g^
T 1.5".L=3',W=3'
(SEE SHEET C7 FOR DETAIL}
-DEM1
1+00
18" F.E.S.
STA. 1+30,15
N 404429.98
E 253788,73
TYPE L RIP RAP DSO = r
I -3',W=3"
(SEE SHEET C7 FOR DETAIL)
D.35%
cc
kip
0+50
18" F.E.S.
STA 1+30.15
INV. ELEV = 4606.12
A$P'HAL
WCR 60.5
- -.. ir F.E.S. -
-STA, 1+62.35
-N 444421,44
E 253816.92
liar
12,20 LE - 18" CMP
STORM DRAIN 6
3230 LF - 18" CMP
00,50%
1+00
EXISTING GRADE
PIPE CENTERLINE
0.5094
18" P.E.S.
STA 1+62.36
INV. ELEV =4808.26
STORM DRAIN 6
14 20 40
SCALE. 1=20'
NOTES:
1. ALL CMP FLARED END SECTIONS SHALL INCLUDE TOE PLATE PER
DETAILS.
2. RCP CULVERT FLARED END SECTIONS SHALL BE CONNECTED BY
CONCRETE JOINT FASTENERS PER DETAILS.
3. CONTRACTOR SHALL ENSURE CULVERT COVER MEETS OR
EXCEEDS MINIMUM COVER SHOWN. ON DETAILS_
4, SEE BEDDING DETAILS FOR GNP AND RCP CULVERTS ON DETAILS.
5, ALL RCP FLARED END SECTIONS SHALL INCLUDE THE END
SECTION WITH CUTOFF WALL SHOWN ON SHEET CD2.
S. CONTRACTOR RESPONSIBLE FOR TRAFFIC CONTROL PLAN AND
COORDINATION WITH WELD COUNTY.
1, CONTRACTOR SHALL REVEGETATE DISTURBED AREA WITH WELD
COUNTY APPROVED SEED MIX.
8, ANY EXISTING PIPE (S) THAT V'4LL RE REPLACED SHALL 9E
REMOVED AND DISPOSED OF OFF -SITE BY CONTRACTOR.
2+00
4620
4615
4610
4605
4600
4595
4590
2+50
Farnsworth
GROUP
1612 SPECHT POINT ROAD, SUITE 105
FORT COLLINS, COLORADO 80525
(970) 484-7477 / info[ }gl-w,com
wtiw+f•w,C4m
Engineers I Architects 15uryeyare 15cientisls
I SOU@
# Date: Description:
Project Status
NOT FOR CONSTRUCTION
PROZer
Weld County
Weld County Master
Drainage Design
Services
Weld County, Colorado
Date:
Desigrt/Drawn:
Reviewed:
Book No.:
06108/2016
RL
S4EFT TILE
STORM DRAIN 6 & G
PLAN & PROFILE
HUMOR
C5
Ara
Project No.: 0151255.00
Farnsworth
GROUP
1612 SPECHT POINT ROAD, SUITE 105
FORT COWN5, COLORADO 80525
(974 484.7477 / info@wf-w.ccm
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TYPE L RIP RAP D5D = 9"
T=1.5, Lse.,vv=si
(SEE SHEET 07 FOR OETAILI x;
47.25IFry19"X87'
ELLIPTICAL RCP
19" X 30' ELLIPTICAL F.E.S.
STA. i+86.94
N 37667,.i",80
E 245333.58
iiCMP IN CONCR£7E STRUCTURE
file -06745
O
19" X 30" ELLIPTICAL F.E.S.
STA. t+19.87
N 376669.68
E 2453329.43
of
r
,
tI
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78' NIGH X 24" WOE COP
FL=4668,2,7
STORM DRAIN 7
TYPE L RIP RAP 05(I s 9"
TON, L■erW=5'
(SEE SHEET C7 FOR DETAIL}
r —
He X30" ELLIPTICAL F.E.S.
STA 1+19,67
INV. ELEV • 4967.45
47.26LF-19"X30'
ELLIPTICAL RCP 0.59%
CC OF
I
I
SCALE: 1"it2a'
NOTES:
1. ALL CMP FLARED END SECTIONS SHALL INCLUDE TOE PLATE PER
iETAJLS.
2. RCP CULVERT FLARED END SECTIONS SHALL BE CONNECTED BY
CONCRETE JOINT FASTENERS PER DETAILS.
3. CONTRACTOR SHALL ENSURE CULVERT COVER MEETS CR
EXCEEDS MINIMUM COVER SHOWN ON DETAILS.
4. SEE BEDDING DETAILS FOR CLIP AND RCP CULVERTS ON DETAILS,
5. ALL RCP FLARED END SECTIONS SHALL INCLUDE THE END
SECTION WITH CUTOFF WALL SHOWN ON SHEET CDZ
6, CONTRACTOR RESPONSIBLE FOR TRAFFIC CONTROL PLAN AND
COORDINATION WITH WELp COUNTY.
7. CONTRACTOR SHALL REVEOETATE DISTURBED AREA WITH WELD
COUNTY APPROVED SEED MIX.
8, ANY EXISTING PIPE (SI THAT WILL BE REPLACED SHALL BE
REMOVED AND DISPOSED OF OFF -SITE BY CONTRACTOR.
EXISTING GRADE
Igt PIPE CENTERLINE
19" X 30" ELLIPTICAL F.E.S.
STA 1+88.93
INV. ELEV =.665.23
Ca
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isi
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1+00
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2+00
4685
4680
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4670
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Clutter 9
t71TEND RIPRIVP TD
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9.7O Urban Drainage and Flood Control District
Urban Storm Drainage Criteria Maruai valumc 2
January 2016
Farnsworth
GROUP
1.612 S PECHT POINT ROAD, SUITE 105
FORT COLLINS, COLORADO 80525
{97O) 482144 77 / infMi@f-w.com
www.f-w,cam
Engineers I Archlteth I Surveyors I Scienhils
ISSUE
II Date:
Project Status
NOT FOR CONSTRUCTION
Weld County
Weld County Master
Drainage Design
Services
Weld County, Colorado
Date:
Design Drawn:
Reviewed:
Book No.:
SHEET TRLE
06/08/2016
RL
JG
$T0RM DRAIN 7 PLAN
& PROFILE
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Project No.:
01 51255.00
Farnsworth
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" Dote: Description:
Project Status
NOT FOR CONSTRUCTION
Weld County
Weld County Master
Drainage Design
Services
Weld County, Colorado
Date:
Design/Drawn:
Reviewed:
Book No.:
06/0812015
RL
Jic
SHEET mtt:
DRAINAGE DITCH
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FORT COLLINS, COLORADO 84525
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# Date:
Project Status
NOT FOR CONSTRUCTION
n�meer—
Weld County
Weld County Master
Drainage Design
Services
Weld County, Colorado
Date:
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Reviewed:
Book No.:
06(08/2016
RL
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GROUP
1612 SPECHT POINT ROAD, SUITE 105
FORT COLLINS, COLORADO 80525
(4 70} 484-7477 / i rr#p[a 4-w. ce m
www.F.w.com
Cnainna . 1 Architects 1 Surveyors I Scientssts
iynra=ia
ague
# Date: Description:
Project Status
NOT FOR CONSTRUCTION
PROJECT:
Weld County
Weld County Master
Drainage Design
Services
Weld County, Colorado
Date:
Design/Drawn;
Reviewed:
Book Na.;
05/08/2016
RL.
JC
Scar firth:
CIVIL DETAILS
SHEET MINDER
CD2
Project No.: 0151255,00
APPENDIX F
Floodplain Report
0
Weld County Parkway Floodplain Analysis
For Weld County Parkway Drainage Master Plan
Weld County, Colorado
April 26, 2016
Prepared by:
Farnsworth Group, Inc.
1612 Specht Point Road, Suite 105
Fort Collins, CO 80525
i
Weld County Parkway Hydraulic Analysis
Table of Contents
1.0 INTRODUTION 2
1.1 Purpose r/...,/.,.,t...,..
.0 SOUTH PLATTE HYDRAULIC ANALYSIS5
,1 Hydraulic Modeling Overview 5
2.2 Effective Condition HEC-RAS Model ■. Y. / .1
2.3 Corrected Effective Model .....r..,..t...,...,1.,../.,1...., 1
2
3.0 POUDRE RIVER ER HYDRAULIC ANALYSIS 14
.1 Hydraulic Modeling Overview .+/...,..14
3.2 Effective Condition HEC-RAS Model15
.3 Corrected Effective Model 17
4.0 REFERENCES ,....,.,.,..1.1..18
.. .:-.:f.. .:..a' ...�. .. .. y..V ..i ... _..::-•.-... '�.. .. •::ter....,. ... ..
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Farnsworth Group, Inc.
7
Weld County Parkway Hydraulic Analysis
1.0 INTRODUCTIO
1.1 Purpose
The report presents the results of a floodplain impact evaluation for the Weld County
Parkway Drainage Master Plan Project for Weld County (County). The project boundary
is set as Weld County Road 601/2 on the north, Weld County Road 53 and 56 on the
east, US 4 on the south and Weld County Road 45 (Fern Avenue) on the east.
Detailed project limits are shown in Figure 1.
Wirkt County Patsy Hyclreujc Study Prcia:t
Figure 1 Map of Weld County Parkway Hydraulic Study Project Limits
Farnsworth Group, Inc.
2
Weld County.Parkway Hydraulic Analysis
The project limits falls within a Federal Emergency anagem+ent Agency (FERIA)
detailed study area with identified flood : 1-ipercent--annual-chance floodplain and the
0.2 -percent -annual -chance floodplains for South Platte River (south Platte) and Cache
La Poudre River (Poudre). The project is within the Flood Insurance Rate Map (FIRM)
panel numbers 080266 0637C and 0645C revised on September 28, 1982 (Figure 2).
Farnsworth Group, Inc
3
AclOWIEst
Weld County Parkway Hydraulic Analysis
*D*IEC
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Figure 2 FIRM Map of Weld County Parkway Hydraulic Study Project Limits
_tawsAve
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Detailed FIRM maps are provided in Appendix C.
H1 I t
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4
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This report summarizes all of the floodplain impacts studies associated with the most
recent floodplain model. Extensive data collection efforts have been performed and
previous hydraulic analysis study documents have been reviewed and evaluated as
well.
The documents prepared for South Platte floodplain impacts study and associated with
the most recent model are listed as:
• Flood Insurance Study for Weld County a Volume 1$ 2, and 3, Effective January
20, 2016. Federal Emergency Management Agency (FERIA Flood Insurance
Study Number OBI2 CV001A), January 20, 2016
4
Farnsworth Group, Inc.
Weld County Parkway Hydraulic Analysis
• Weld County Road 49 Extension (South Platte River) Conditional Letter of Map
Revision Application (CLOMA), prepared by Atkins, November 15, 2014
• Weld County Road 49 Extension Roadway Improvements Project Final Drainage
Report, prepared by Atkins and Bohannan Huston, March, 2013
• Conditional Letter of Map Revision US -34A and US -34D Permanent Flood
Repairs (US$4), prepared by Tsiouvaras immon Holderness Consulting
Engineers (TSH), Revised on August 26, 2014
• FEMA HEC-2 Model Output
The documents prepared for Poudre floodplain ood plai n impacts study and associated with the
most recent model are listed as:
• Weld County Road 49 Extension (Poudre) Conditional Letter of Map Revision
Application (CLOMR), prepared by Atkins, January 1 '1 ! 2013
• Flood Insurance Study for Weld County — Volume 1, 2, and 3, Effective January
20, 2016. Federal Emergency Management Agency (FERIA Flood Insurance
Study Number 081 001 A), January 20, 2016
• Summary of Revisions for the Flood Insurance Study Along the Cache La Poudre
River, City of Greeley and Weld County, Colorado, US Army Corps of Engineers,
October, 2006
2.0 SOUTH PLATTE HYDRAULIC ANALYSIS
2.1 Hydraulic Modeling Overview
Currently, two effective models exist for this section of the South Platte River. The first
model is called "Conditional Letter of Map Revision US -34A and US -340 Permanent
Flood Repairs (US 334)" developed by TSH on August 26, 2014. The other model is
called "Weld County Road 49 Extension (South Platte River) Conditional Letter of Map
Revision Application (Atkins WCR 49) developed by Atkins on November 15, 2014.
The cross sections and flow rates from both models are adopted and applied in the
HEC-RAS model, which are listed in Table 1.
rv:,; K_ra_.,•:i..r, �,..ti-G....:__ ,^.c.;+��+^�.-,� �:-.c^�.^i�w s. a.: `�2?'�?w-:: � ..w r•is'-5:rch""?�i�,�'^'�ri,-cG'=�"s :'.r.. �.',^�§:r:rR:?;-}-h':--�,�t'kr.±.. ... __
Farnsworth Group, Group, Inc.
5
Weld County Parkway Hydraulic Analysis
Table I Summary of Data from TSH US 34 Model and Atkins WCR 49 Model
Cross Section
Flow Rate, cfs
0.2 -Percent
10 -Percent
2 -Percent Annual
1 1 -Percent Annual
Annual Chance
Chance
i
Chance
Annual Chance
4
1339430 /5
11,000
24,500
32,500
4 57,500
1328510 /L.
9,555
22,050
26,650
35/075
1326880 /K
10x047.81
23,270,35
30/490409
48/877.52
1323460 /H
11/000
24,500
32/500
57,500
1315395 /D
11/000
24,000
31,000
51,000
The cross sections and flow rates for the downstream of confluence with Cache La
Poudre are applied in the HEC-RAS model, which are listed in Table 2.
Table 2 Summary of Data Used for the Cross Sections downstream of Confluence
with Cache La Poudre
Cross Section
Flow Rate, cfs
10 -Percent
2 -Percent Annual
1 -Percent Annual
0.2 -Percent
Annual Chance
Chance
Chance
Annual Chance
1295371
31,550 2
41,600
73,800
14,3101
Notes:
1. Poudre Discharge of 3,310 cfs + South Platte Discharge of 11,000 cfs.
Poudre Discharge of 7,550 cfs + South Platte Discharge of 24,000 cfs.
3. Poudre Discharge of 10,600 cfs + South Platte Discharge of 31,000 cfs.
4. Poudre Discharge of 22,800 cfs + South Platte Discharge of 51,000 arse
Farnsworth Group, Inc.
6
Weld County Parkway Hydraulic Analysis
The hydraulic boundary conditions are set at cross section 1339430/S. The end cross
section prior to the confluence with Poudre River is 1310630/A. The known water
elevations for 10 -year, 50 -year, 100 -year and 500 -year from HEC-2 output are used as
the hydraulic boundary conditions. The elevation data used are based on the National
Geodetic Vertical Datum of 1929 (NGVD29). Table 3 illustrates the known water
elevation used for HEC-PAS Model,
Table 3 Summary of Known Water Elevation Data
----
10 -Year '
50 -Year r
100 -Year
500 -Year
Known Water
Elevation
4607.779
4610,151
4611.187
4611.840
The first HEC-RAS model (Plan 1), the Effective Condition Model (ECM), was created to
reflect the supplemental topographic information. The cross sections within the project
area are generally from cross section 1339430/S (upstream) to cross section
1310630/A (downstream).
A supplemental survey has been performed at the locations of original cross sections
and also two additional cross sections.
The second H E - RAS mode (Plan 2), the Corrected Effective Model (GEM), was
created to reflect the most -recent topographical conditions. Due to the 2013 flood
impacts, the river bank conditions are changed. The cross sections have been revised
to reflect the most -recent conditions. In addition, 13 cross sections are added to extend
the Plan 11 model further east to the downstream of Weld County Road 53 Bridge.
The steady state hydraulic analysis of the floodplain over the project site was performed
using HEC-RAS 4.1.0 in tandem with HEC-GeoRAS eoF for pre- and post -processing of GIS
data and HEC-RAS results for flood mapping using Arc I .
A copy of the current HE-RAHEC-RAS model is included in the submittal package for the
permit application. The model plans are named as follows:
...w.. .. .l ., .. ... 've- .. ..r . .,. . _. _. 1n' _ J+ Y- .� .J. 1. �.. ...._�:..d :'. ': �'...-mow. ..n .: �y � C. �. �.:
...,a �.r�, s. r ,. "r-i:.. L,T .\.7-1'.‘a.. ..d, a.. .�, ra-s„-sc,.- .,�. ..i. ..a ;w ,(• 'r;.n.., .xa .t:; ,^t^:, ..:zc � .:ri. •'i; �-'.-r.. �.;�:
.:._.,. ..p .. �. ,.,.1,. �{,..q.,...•.. ..�. 1.v..•.... �. , J--. . ..•,<Ctr. __. : ('. __. -_.. _ r�, ..?f'e.� e. ..t_ ..._ .. r. �..4tl�o •�C.'.;,.::�r.tr,'iF�[�S..N,,.+'".';,�r..Cy-�.l:�.LLn.�. ,•"� __:.n�. ._ �r-.i`?, :.... .� C,.
Farnsworth Group, Inc.
Weld County Parkway Hydraulic Analysis
• Effective Condition Model (ECM) — Plan 1
• Corrected Effective Model (CEM) — Plan
2.2 Effective Condition HEC-RAS Model
Plan Name: Plana ECM
The Effective Condition Model was constructed based on the two latest models
discussed in Section 2.1. All elevation data are based on NGVD29 9 vertical datum. In
general, from upstream cross section 1339430 to downstream cross sections 1310630
are located within the project limits, The 10 -year, 50 -year, 100 -year and 500 -year flow
rates from those two models are used in the Effective Condition Model. The output
indicates that the water surfaces between those two models and the HEC-RAS model
match well. Therefore, the model is ready to be used as a base file to perform future
analysis.
The difference in the 100 -year water surface elevations between the most -recent
models and the Effective Condition Model are presented in Table 4.
Table 4 Water Surface Elevation Comparison between U534 and Atkins WCR 49
Models and Plan ECM Model
Cross Section
i 100-Yr Flow,
cfs
100-Yr Elevation Comparison, ft
River Station
FEMA Cross-
Section
;
a
LJS-34/Atkins
WCR 49
ECM
Difference
1339430
5
32,500
4641.75 1
4641.4
-0.35 1
1337280
320500
4639.32 1
4638.97
-0.35 1
R
1334770
Q
32 500
4635.08 1
4635415
0.071
1333140
P
32,500
463►4.47 i
4634,56
0.091
1330930
O
32,500
4634161
4634427
0,11 1
Farnsworth Group, Inc.
8
Weld County Parkway Hydraulic Analysis
1330034
-...... !
26,650
4633.251
4633,26
0,011
1329258
26,650
4630.021
4630.03
0,01 1
1328510
1
26,650
462934 1
4629.10
0.06
1326880
K
30,490.1
4628.17 1
4628.32
0.15 1
1325789
30x
0.1...
4627.09 2
4627434
0.25 2
1325582
30,490.1
4626,012
4626.10
0.09 2
1323460
H
3 2, 500
4622,16 z
4622.07
-0.09 2
1321020
G
32,500
4618.04 2
4618.17
0.13 2
1316800
F
32,500
4614,18 2
4614.43
025 2
1315765
32,500
4613.62 2
4613,68
0,06
1315595
311000
4613.24 z
J
4613.39
0.15
1315395
C
31,000
4612.45 2
4612.55
e
0,10 2
•s s.aass..nr��
..
1314350
0.
31,000
4611.19 2
4611.39
_
0.201
1313100
8
31,000
4608.9 3
4611.31
2.41
1310630
A
31,000
4605.4 3
4611.39
5,79
Notes:
1. Data from US 34 model
2. Data from Atkins WCR 49 Model
3. Data from FEMA1& HEC•2 model developed in 19xx
S
Farnsworth Group, Inc.
Weld County Parkway Hydraulic Analysis
C
C
The differences of 10o -Year elevation between the most -recent HE —RAs models (US
34 and Atkins WCR 49) and the Plan ECM model are ranged between -0.35 and 0.25
feet. The possible factors that cause the differences are:
• Settings in Cross Section 1321020 i Obstructed Areas was used in the US 34
model, while Ineffective Flow Areas was applied in the Atkins WCR 49 model.
Obstructed Areas is used in the Plan ECM model (Figure 3).
• Settings in Cross Section 1316800 — Minor difference at this cross section were
applied at these two models. Settings used in US 4 model is used in the Plan I
ECM model (Figure 4),
Obstructs Areas
Select Obstruction Mode
C Normal It Multiple Blocks
a.
Start Sta. End Sta. I Elevation
190.58
4638.83
OK I Cancel � Defaults
:....Clear"":
�..
Station
Elevation
Select I neffe
Left Might
Far
r Permanent F Permanent
OK I Cancel Defaults Clear I
Figure 3 Comparisons of settings used in cross Section 1321020
10
Farnsworth Group, Inc.
Weld County Parkway Hydraulic Analysis
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543
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4616.6
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4817.9
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hen
t
1 st#
10000
Cross Section Data - CE
IE . , fr-/.1"++:. . .'J rc ri ,.
s ... ...w •, . ` I I eai1
FltMes: �,7�rQSP � . 71 •rrr
!Rush RSro* skt; 13169 O • . .:J ,
Dathiptien IRMA Clint$tctipn ID F
Doi Row iris flaw
I
4..9
3 Wg 462.4
4 An 4624,5
4629
4+190
41}16
sip 4nd.B
1a +481.8,s.
11 ! 46'Et8
+461?.9
I' 13 481614
*19,1 4
0910
47 ifin
18 Oil Ix.I;k9
,2
4409,7
4Es�0
461Et$
1810.7
24 4808.4
1t�M
4810.2
8
403
w o' -b - J r3
2974
23
S iation E ievation Gate (if
r
Leff Bank Right Bank
Inc 7765
Conti ativn ti,c.nr;nr,
101 I0.3
a
1
u�
4E1e
4620
4615'
4645:
4tvaa a 4000
ii rr Rev XS a as Pittr
01
Steps -1 34 PR Plan: CE X2#2016
fete, CRSP:am F
SWISS t
3 01
Ii
36460
967149, 4607.46
Figure 4 Comparisons of Settings used in Cross Section 1316800
Farnsworth Group, Inc.
Weld County Parkway Hydraulic Analysis
Comparisons of water rates and water surface elevations for 10 -year, 50 -year, 100 -year
and 500 -year conditions are presented in Appendix C.
23 Corrected Effective Model
Plan Name: Plant CEM
The Corrected Effective Model (CEM) was developed using the Plan 'l ECM as the
base model and modified to include the revised site conditions, which include the
following modified cross sections:
• Newly surveyed cross section data added to Plan #1 ECM from Cross Section
1339430 (start) to Cross Section 1310630 (end)1 The geometric data modified
include elevations and coordination data.
• 13 new cross sections have been added starts from the confluence with the
Poudre re River to east of Weld County Road 53.
These changes better reflect the actual site situation. The flow files have no changes
from effective model. The water surface comparison under the 100 year condition
between the Plan I ECM and Plan 2 GEM is presented in Table 5.
Table 5 Water Surface Elevation Comparison between
Plan I ECM and Plan CEM
Cross Section
100-Yr Flow,
cfs
100-Yr Elevation Comparison, ft
River Station
FEMA Cross-
Section
Plan 1 ECM
Plan 2 CEM
Difference
1339430
5
3 2, 500
4641.40
4641.40
0
1337280
R
32,500
4638.97
4638.97
0
1334770
32,500
4635.15
4635.15
0
c,
1333140
p
32,500
I
4634.56
4634.56
l
0
Farnsworth Group, Inc.
12
Weld County Parkway Hydraulic Analysis
133O93O
O
32,500 _ . _._...
4634.27
4634.27
O
133O034
26,650
4533.26
4633.26
O
1329258
26,650
4630.03
4630.03
0
132851O
L
26,650
4629.40
4629.4
0
132688O
K
30,490.1
4628.31
4628.31
O
1325789
30,490.1
4627.33
4627.34
0.01
1325582
-.._
30,490.1
4626.09
4626.10
0.01
1323460
H
32,500
4622.08
4622.08
O
1321020
32,500
461819
4618.19
O
G
1316800
F
32,500
461438
4614.43
0.05
1315765
32,500
4613.70
4613.76
0.06
1315595
31,000
4613.39
4513.45
0.06
1315395
C
31,000
4612.55
4612.63
0.08
131435O
C
31,000
461139
4611.55
0.16
1313200
5
31,000
4611.31
4611.48
0.17
131O63O
A
31,000
4611.19
4611.36
0.17
Above table indicates that the water surface elevations for 100- year storm events are
increased from O -OA 7 feet across the project area. This is due to the better survey
information has been applied in the model and the addition of 13 cross sections at
downstream of the confluence with Poudre River. The comparisons of flow rates and
fl
Farnsworth Group, Inc.
Weld County Parkway Hydraulic Analysis
water elevations for the 10 -year, 50 -year and 500 -year events are presented in
Appendix A.
The outputs from ECM HEC-RAS model are also included in the Appendix F.
3.0 POUDRE RIVER HYDRAULIC ANALYSIS
3.1 Hydraulic Modeling Overview
Currently, one effective model exists for this section of the Poudre River, which is called
`Weld County Road 49 Extension (Poudre River) Conditional Letter of Map Revision
Application (Atkins WCR 49) developed by Atkins on January 11, 2013,
The cross sections and flow rates from both models are adopted and applied in the
HEC-RAS model, which are listed in Table 6.
Table 6 Summary of Data from Atkins WCR 49 Model
Cross Section
Flow
Rate, cfs
10 -Percent
2 -Percent Annual
1 -Percent Annual
002 -Percent
Annual Chance
chance
Chance
Annual Chance
12901
3,300
IL._.__..
7,550
10,600
22,800
The hydraulic boundary conditions are set at cross section 12901. The end cross
section prior to the confluence with Poudre River is 3463. The elevation data used are
based on the National Geodetic Vertical Datum of 1929 (NGVD29).
The first HE-RAHEC-RAS model (Plan 1), the Effective Condition Model (ECM), was created to
reflect the supplement topographic information. The cross sections within the project
Farnsworth Group, Inc.
14
Weld County Parkway Hydraulic Analysis
area are generally from cross section 12901 (upstream) to cross section 3463
(downstream).
A supplement survey has been performed at the locations of original cross sections and
also two additional cross sections.
The second HEC-RAS mode (Plan 2), the Corrected Effective Model (GEM), was
created to reflect the most -recent topographical conditions. Due to the 2013 flood
impacts, the river bank conditions are changed. The cross sections have been revised
to reflect the most -recent conditions, In addition, 3 cross sections are added to extend
the Plan 1 model further east to the confluence with South Platte River.
The steady state hydraulic analysis of the floodplain over the project site was performed
using HEC-RAS 4.1.0 in tandem with HEC-GeoRAS eol for pre- and post -processing of GIS
data and HEC-RAS results for flood mapping using Arc l .
A copy of the current HEC-RAS model is included in the submittal package for the
permit application, The model plans are named as follows:
• Effective Condition Model (ECM) la Plan I
• Corrected Effective Model (CEM) — Plan
3.2 Effective Condition HE&&RAS Model
Plan Name: Plan°, ECM
The Effective Condition Model was constructed based on the latest model discussed in
Section 3.1. All elevation data are based on NGVD29 vertical datum. In general, from
upstream cross section 12901 to downstream cross sections 3463 are located within
the project limits. The 10 -year, 50 -year, 100 -year and 500 -year flow rates from those
two models are used in the Effective Condition Model. The output indicates that the
water surfaces between these two models match well. Therefore, the model is ready to
be used as a base file to perform future analysis.
-_:.. ..;. .... ._.-r•3. r.... ...:. ..,. r.. ,,._ .... _ �.. �r •. _... .�' ..., ._ ..::. .<. � .z .. _,-. 5 , ,.. _ � . a....,...• a..rr_- >. ....;c nt ut; --iii "'a i ...� ... w. ,.:i .. �, .. w .7 - „
..a ? ... nL.t . , - r ,.
I5
Farnsworth Group, Inc.
Weld County Parkway Hydraulic Analysis
The difference in the 100 -year water surface elevations between the most -recent model
and the Effective Condition Model are presented in Table 7.
Table 7 Water Surface Elevation Comparison between Atkins WCR 49 Models a n d
Plan ECM Model
Cross Section
1OO•fir Flow, cfs
100-Yr Elevation Comparison, ft
Atkins WCR 49
ECM
Difference
12901
10,600
4614.79
4614.79
-0.01
10998
100600
4612004
4612.03
0.03
9157
10,600
4610.08
4610.11
0.05
8341
10,600
4609.63
4609.68
0.10
7819
10,600
4609.09
4609.19
o
7609
10,600
4608.83
4608.83
0
6936
10,600
4607.38
4607.38
5257
10,600
4606.20
460610
3463
10,600
4604,28
4604.28
o
The differences of 100 -Year elevation between the most -recent HEC-RAS models
(Atkins WCR 49) and the Plan I ECM model are ranged between -0.01 and 0.10 feet.
The possible factors that cause the differences are the version of software used. As
discussed earlier, the Plan I ECM model is very close to the most -recent model.
Therefore, it is ready to be used as a base file to perform future analysis.
Comparisons of water rates and water surface elevations for 10 -year, 50 -year, 100 -year
and 500 -year conditions are presented in Appendix a
Farnsworth Group, Inc.
16
Weld County Parkway Hydraulic Analysis
3.3 Corrected Effective Model
Plan Name: Plant CEM
The Corrected Effective Model was developed using the Plan 1 ECM as the base model
and modified to include the revised site conditions, which include the following modified
cross sections:
• Newly surveyed cross section data added to Plan 41 ECM from Cross Section
12901 (start) to Cross Section 3463 (end). The geometric data modified include
elevations and coordination data.
• Three new cross sections have been added prior to the confluence with the
South Platte Rivera
These changes better reflect the actual site situation. The flow files have no changes
from effective model. The water surface comparison under the 100 -year condition
bet ► een the Plan 'I ECM and Plan 2 CEM is presented in Table 8.
Table 8 Water Surface Elevation Comparison between
Plan 'I ECM and Plan CEM
Cross Section
100-Yr Flow, cis
100-Yr Elevation Comparison, ft
Plan I. ECM
Plan 2 CEM
Difference
12 901
10,600
46-14.79
4614.79
0
10998
100600
4612.03
4612.18
0415
9157
100600
4610.11
4610.33
0422
n-aa
83441
an rnn
1O, 600
ara rn
4609.6+
4610.10
0,42
7819
10,600
4609.19
4609.66
0.47
7609
I
10,600
I
4608.83
I
4609.25
0.42
Farnsworth Group, Inc.
IT
Weld County Parkway Hydraulic Analysis
6936
10,600
4607.38
4607.79 :
0.41
I
5257
10.600
4606.20
4606.57
0.37
3463
10,600
4604.8
4605.58
1.30
Above table indicates that the water surface elevations for 100- year storm events are
increased from 0-1.30 feet crossing the project area. The possible factors that cause the
differences are:
• Survey Data Used for Plan 1 ECM and Plan 2 CEM— Plan r1 ECM was created
based on the survey data produced prior to the 2013 Flood, while the Plan
ECM is built based on the better survey information after the 2013 Flood.
• Addition of 3 cross sections at downstream of the Plan 1 ECM.
The comparisons of flow rates and water elevations for the 10 -year, 50 -year and 500 -
year events are presented in Appendix B.
The outputs from ECM HEC-RAS model are also included in the Appendix .
4.0 REFERENCES
1. FEMA Flood Insurance Study, Weld County, Colorado Flood Insurance Study for
Weld County — Volume 1, 2, and 3, Effective January 20, 2016. Federal
Emergency Management Agency (FEMA Flood Insurance Study Number
OSI 3 'OO1 A), January 20, 2016
2. Weld County Road 49 Extension (South Platte River) Conditional Letter of Map
Revision Application (CLOMA), prepared by Atkins; November 15, 2014
a. Weld County Road 49 Extension Roadway Improvements Project Final Drainage
Report, prepared by Atkins and Bohannan Huston, March, 2013
4. Conditional Letter of Map Revision US -34A and US -34D Permanent Flood
Repairs (US34), prepared by Tsiouvaras Simmons Holderness Consulting
Engineers (TSH), Revised on August 26, 2014
......:'5. --:.:-.5:5:x5: ^" 4.:.: '. -.1. '!w "\w .mil, ....1i5'..- ,iv .1 .. ....- ... ":.n"v5.:� \. 'Jf.a: .: ^�. ••.z♦ '�yay.
..: < ,L .516i.o ...5.rlw .5\\. .A. .V.5. -Q.. "!.5 .� • ,�.oru t:. L ;.5,:
...-a _.... c��.,. .. m. -.-••¢:.. r';. _. :r_.. .._,....,S•a \_,�•,_,..•,d-:>. ....�:-.. _. r^:.\c,, _, >,. _, ate: ... .._. ^l:r:?.C'o�.- _a: ��<^pi,+- .a -s.. ... ,. :5c-; ;r. v .5 .,. .,_ .J. ., -:o....
•'sBS, c1, �.:.;� al,.:-a_�' u,l,,5-..k --?�:. ;.. `�.c -�•;, .•,,.wrc:' :ra"L,. 4... �.,.-
Farnsworth Group, Inc_
fie
Weld County Parkway Hydraulic Analysis
5. Weld County Road 49 Extension (Poudre) Conditional Letter of Map Revision
ion
Application (CLOMA), prepared by Atkins, January 11, 2013
6. Summary of Revisions for the Flood Insurance Study Along the Cache La Poudre
River, City of Greeley and Weld County, Colorado, US Army Corps of Engineers,
October, 2006
..-. a,«_�r..., a: .,s-. ._ _.._ .. .. :r.7• ,,... ,. � .ess •r,:• •rw-e;c �.1-,�♦.L-�: •r._�.r.�a,�r...,,c.�.-r .♦ .. „i .. F"♦s,. . rir- ,-.r`vn va•.t... -�r, :... A.�Y ...r•�r..i n!: R:i� r„s.;L.•y:a'c.�,,;:?.::,F�'..•r?;_:, r"'�_, ur.,�:.��':.. .i: .4...�-.�w.f::�eN....�.��v�ir ,, -. ...'�-.e...z.... ..... �.7^;. ??s:.
..; �.,.. ... �a...s..,..,_v,...,r.a _;�u.:.;r ...._r�..,r. a,.. -r . , ,7s. :.a.4• }n... ,.. a.� +.�. .c..,�..._.nx. _.a'"G.c.hv... .. -.1 .r. .., ..wl i...
Farnsworth Group, Inc.
APPENDIX A
TABLE Al AND A2 COMPARISON OF
SOUTH PLATTE MODEL RESULTS
able 'Platte Platte
mparison ,o
twa
ter Surface rte
; Under 10-YR
r
I - EFFECTIVE
MODEL
2 - CORRECTED EFFECTIVE MODEL
HEC-RAS
PLAN:
ECM
HEC-RAS PUN: : a
RIVER
EACH
RIVER
ST
W.S. E#.EV
REACH
--
RIVER 5TA
W.S. EL.E
,
2-i
I
1
I,
South Platte
South
Platte 1
1339430
4639.15
.
South
Platte
1
1339430 • •.
4639.15
r
0.00
South
Platte
`
South
Platte
1
1337280
4636.91
r
South
Platte
1
1337280
4636.91
all
0,00
South
Platte
r
South
Platte
1
1334770
4632,83
1
South
Platte
1
1334770
4632.831
0,00
1333140
4631.241
Imo,
0,00
South
Platte
South
Platte
1
1333140
4631.24
F
South
Platte
1
South
Platte
R
South
Platte
1
1330930
4630.65
I
South
Platte
1
1330930
4630.651
0.00
South
Platte
South
Platte
1
1330034
4629.95
1
South
Platte
1
1330034
4629195
f 1
0.00
South
Platte
;
South
Platte
1
1329258
4627.85
1 .
South
Platte
1
1329258
4627.85
al
lir0,00
South
Platte
South
Platte
1
1328510
4626.69
1
South
Platte
1
1328510
4626.69
+ _`
p
0.00
South
Platte
j
South
Platte
2
1326880
4625.09
1
South
Platte
2
1326880
4625.09
0,00
South
Platte
j
South
Platte
2
1325789
4602412
1
South
Platte
2...
1325789
4624.22
I ,
[
0,00
South
Platte
f
South
Platte
2
1325582
4623.811
'
South
Platte
2
1325582
4623.81
0.00
South
Platte
I
South
Platte
Low
1323460
4620.54
f r
South
Platte
Low
1323460
4620154
1
0100
.- ..
south
Platte
�
South
Platte
Low
1321020
4616.671
South
Platte
Low
1321020
4616.67
r '
0.00
South
Platte
South
Platte
Low
1M6800
4610,33
[
South
Platte
Low •
1316800
4610.34
I
0.01
South
Platte
I
South
Platte
Low
1315765
! 4609.8
[
South
Platte
Low
1315765
4609.81
r
0.01
-
South
Platte
Low
1315595
460956
r ,
South
Platte
Low
1315595
4609.58
r
0.02
South
Platte
r •
South
Platte
South
Platte
Low
1315395
4609.17
.
South
Platte
Low
1315 395
4609.19
0.02
` iir0.05
South
Platte
South
Platte
Low
1314350
4608.05
South
Platte
Low
1314350
4608,1
•
South
Platte
Low
1313200
4607.85
'South
Platte
Low
1313200
4607,91
0.06
South
Platte
South
Platte
a
South
Platte
Low
1310630
4607.78
'
South
Platte
Low
1313200
4607.84
` "
0.06
South
Platte
'
South
Platte Low
1308300
South
Platte
Low
1308300
4607.81
.
South
Platte
'
South
Platte Low
1300257
South
Platte
Low
1300257
4607.8
_Platte
South
South
Platte Low
1295371
South
Platte
Low
1295371
46078
_
South
Platte
South
Platte
Low
1287229
South
Platte
Low
1287229
460779.
South
Platte
South
Platte Low
1279086
'
South
Platte
Low
1279086
4607.79
South
Platte
South
Platte Low
1267686
'
South
Platte
Low
1267686
4607.79
South
Platte
South
Platte Low
1257914
South
Platte
Low
1257914
4607,79
South
Platte
South
Platte Low
1242443
South Platte
Low
1242443
4607.78
South
Platte
South
Platte Low
111240060
:
South Platte
Low
124000
4607.78
South
Platte Low
1239847
South
Platte
Low
1239847
460738
South
Platte
_
South Platte
South Platte Low
1238625
South Platte
Low
1238625
4607.78
South Platte
South
Platte Low
1236944
a
South Platte
Low
1236944
4607.78
_
South Platte
South Platte Low
1235417
.
South Platte
Low
1235417
4607,78
a
I
*Bold denotes new cross section
*italic denotes new cross section name
Tattle 142 -- h; Platte
comparison .SS Flow
Unde 10-Y
ticin
1 w EFFECTIVE MODEL
-.CORRECTED
EFFECTIVE
MODEL
t
��1ry� ��`t �'�({gyp'
EC-RAS ■ ECM
... ._. ��.i{
F ' EC
L�t{}��' �tl�f�+
7fq�� PLAN:
AS 1 N: CEM
.i
RIVER
REACH
RIVER STA
FLOW
REACH
RIVER STA
: P dw
24
-
_
.._
South Platte
South Platte 1
1339430
11000
r
South Platte 1
1339430
110O0
:
0.00
0,00
South Platte
South
Platte 1
1337280
11000
South Platte 1
1337280
11000
,
0.00
South
Platte
South Platte 1
1334770
11000
South Platte 1
1334770
11000
South
Platte
South Platte 1
1333140
11000
South
Platte 1
1333140
11000
i
South
Platte
_0.00
South Platte 1
1330930
11000
South
Platte
1
1330930
11000
;
0.00
South
Platte
I
South Platte 1
1330034
9955
South
Platte
1
1330034
9955
I
0.00
outh
Platte
I
South Platte 1
1329258
9955
South
Platte
1
1329258
9955
I
0.00
South
Platte
South Platte 1
1328510
9955
South
Platte
1
1328510
9955
0.00
South
Platte
South
Platte 2
1326880
10047.81
South
Platte
2
1326880
10047.81
0,00
South
Platte
South Platte 2
1325789
10047.81
South Platte
2
1325789
10047.81
0.00
South
Platte
South Platte 2
1325582
10047,81
South Platte
2
1325582
10O47.81
0.00
South
Platte
South
Platte
Low
1323460
11000
South Platte
Low
1323460
11000
0,00
South
Platte
South
Platte
Low
1321020
11000
South Platte
Low
1321020
11000
I
0.00
South
Platte
South Platte
Low
1316800
11000
South Platte
Low
1316800
11000
0,00
I
0+00
South
Platte
South Platte
Low
1315765
11000
South Platte
Low
1315765
11000
South
Platte
South Platte
Low
1315595
11000
South Platte
Low
1315595
11000
I a
0.00
South
Platte
South Platte
Low
1315395
11000
South Platte
Low
1315395
11000
I
I
0,00
South
Platte
South Platte
Low
1314350
11000
South Platte
Low
1314350
11O00
0,00
South
Platte
South Platte
Low
1313200
11000
South Platte
Low
1313200
11000
1
0.00
South
Platte
South
Platte
Low
1310630
11000
South Platte
Low
1313200
11000
0.00
South
Platte
South Platte
Low
1308300
South Platte
Low
1308300
11000
South
Platte
South Platte
Low
1300257
South Platte
Low
1300257
11000
South
Platte
South Platte
Low
1295371
South Platte
Low
1295371
11000
South
Platte
South Platte
Low
1287229
South
Platte
Low
1287229
11000
South
Platte
South Platte
Low
1279086
South Platte
Low
1279086
11000
South
Platte
South Platte
Low
1267686
South
Platte
Low
1267686
11000
South
Platte
South Platte
Low
1257914
South
Platte Low
1257914
11000
South
Platte
South Platte
Low
1242443
South
Platte Low
1242443
11000
South
Platte
South Platte
Low
1240000
South
Platte
Low
124000
1100€
gym
South Platte
I
South Platte
Low
1239847
South
Platte Low,
123984
11000
1 4
South Platte
j
South Platte
Low
1238625
South Platte
Low
1238625
11000le
South
Platte
I
South Platte
Low
.
1236944
South
Platte Low
1236944
11€ 00 I ligi
South Platte
I
South Platte
Low
1235417
South Platte Low
1235417
11000
*Bold denotes new cross section
*1talie denotes new cross section name
Table
Al -South
Piaui
pa riso f i at+er ;. u rfa ce Ei
n - Under
SO-YR Condition
1 - EPFEETNE
MODEL
2 -CORRECTED
EFFECTIVE MODEL
—....._...i ....r.r.:r r:.rumrirrn•n r.ser:r n.rrn, r..i........ „m
EC
RAS PLAN: ECM
I EC�RAS PLAN: CE
'
RIVER
-fir.-. ,.... -fitiptt
REACH
RIVER
STA
-
W.S. ELEV
�_. �__ -, .--
REACH
.. _ : .
_
RIVER STA
�_, _ ., ,,, ,,, ,,,,A..
WS. E .E
2-
,... _
_
.
South
Platte
South Platte 1
1339430
4640.76.
I,
South Platte
1
1339430
4640.76
0.00
South
Platte
South Platte
1
1337280
4638.65
[
South Platte
1
1337280
4638,65
a
0.00
South
Platte
South Platte 1
1334770
4634,21
[
South Platte
1
1334770
4634.21
0.00
South
Platte
South
Platte 1
1333140
4633.69
I
South
Platte
1
1333140
4633.69
0.00
South
Platte
'
South
Platte 1
1330930
4633.39
;
South
Platte
1
1330930
4633,39
I
0,00
South
Platte
j
South
Platte 1
1330034
4632.48
South
Matte
1
1330
M3
46 .48
0.00
South
Platte
�1329258
South
Platte 1
1329258
4629.58
;
South
Platte
1
����.��
�
.'
�
0,00
South
Platte
I
South
Platte 1
1328510
4628.591
South
Platte
1
1
2S 510
4
2 , 59
0.00
South
Platte
C
South
Platte 2
1326880
4627.32
f
South
Platte
2
0.00
South
Platte
t
r
South
Platte 2
1325789
4626.37
South
Platte
2
0,00
.... a
-0.01
South
Platte
[
South
Platte 2
1325582
4625.46
South
Platte
2
I
South
Platte Low
1323460
4621.65
South
Platte
Low
13234506:.1,65
0.00
South
Platte
South
Platte
Low
1321020
4
12,76
-0.01
South
Platte
I '
South
Platte Low
1321020
4617,77
South
Platte
I
South
Platte Low
1316800
4613.17
South
Platte
Low
1316800
4613.2
0.03
I
South
Platte Low
1315765
4612.51
South
Platte
South
Platte
Low
1315765
4612,55
0.04
South
Platte
South
Platte Low
1315595
4612.24
South
Platte
Low
1315595
4612.28
I!
0,04
South
Platte
South Platte Low i
1315395
4611.56
South
Platte
Low
1315395
• 4611,6
,_
7
0.04
South
Platte
1
South Platte Low
I 1314350
4610.36
South
Platte
Low
1314350
4610.48
0.12
South
Platte
South Platte Low
j 1313200
4610.26
South
Platte
Low
1313200
4610.394610.39,srritr
0.13
-
South
Platte
Low
1313200
4610.29
rr.
0.14
South
Platte
1
South Platte Low
1310630
4610,15
South
Platte
;
South Platte
Low
1308300
South
Platte
Low
1308300
4610:23
�
South
Platte
r 1
South Platte Low
1300252'
South
Platte
Low
1300257
4610.21
,..
-
,
South
Platte
South Platte Low
1295371
South
Platte
Low
1295371
4610.2
South
Platte
South
Platte
Low
1287229
4610419
1
South
Platte Low
1287229
South
Platte
South Platte Low
1279086
South
Platte
Low
1279086
4610,19
South
Platte
I
South Platte Low
1267686
South
Platte
Low
1267686
4610.18
South
Platte
!
South Platte Low
1257914
South
Platte
Low
1257914
4610.17
South
Platte
'South
Platte
Low
1242443
South Platte
Low
1242443
4610.16:
,
South
Platte :.
South Platte
Low
1240000
South Platte
Low
124000
4610,16
t-
---
-
South
Platte
South Platte Low
1239847
South Platte
Low
1239847
4610.16
South
Platte
South Platte Low
1238625
South
Platte
Low
1238625
4610,11
South
Platte
South Platte Low
1236944
South Platte Low
1236944
4610.15
-
South
Platte
South Platte Low
1235417
South Platte Low
1235417
4610.15
1
I
*Bold denotes new cross section
*Italic denotes new cross section name
*OM Mk14 - tet Iftut1trlftinvnt .
•
#1340_
EFFECTIVE.'•,
A2
Ackt_ith latte Comparison :
* LU) der 500YR
2 ,- CORRECTED . ,...- .. •.'.... -. . . .. .
?
1 on
EFFECTIVE
MODEL
h4EC RAS
PLAN.
ECM
M�WId�4Pdr.Cr.rr..�mm w�..... ..-.: .. .... ....., ......�—ten �w+"�
HEC4A5 PLAN ._CEO ...... _ ....
-
-STh
RIVER
I
REACH
RIVER STA
FLOW
REACH
RI'
E '
PLOW
24
_MM.
_ _
F
South Matte
South Platte 1
1339430
24500
t
South
Platte 1
1339430
24500 I
0.00
South Platte
South Platte 1
1337280
24500
1
South
Platte 1
1337280
24500 j
0.00
South Platte
South Platte 1
1334770
24500
tt
South Platte
1
1334770
24500
0,00
South Platte
South Platte 1
1333140
24500
;
South Platte
1
1333140
24500
0.00
South
Platte
South Platte 1
1330930
24500
!
South Platte
1
1330930
245001
0.00
South
Platte
South Platte 1
1330034
22050
I
South Platte
1
1330034
22050 I
li
0400
South
Platte
South Platte 1
1329258
22050
South Platte
1
1329258
22050
0.00
0.00
South
Platte
South Platte 1
1328510
22050
South Platte
1
1328510
22050 I
South
Platte
South Platte
2
1326880
23270.35
I
South Platte
2
1326880
23270.35
I
0.00
South
Platte
.
South Platte
2
0.00
1325789
23270.35
South Platte
2
1325789
23270.35
j
South
Platte
South Platte
2 -
1325582
23270.35
South Platte
2
1325582
2327035
0400
South
Platte
South
Platte
Low
1323460
24500
South Platte
Low
1323460
24500
,'
0400
24500
I
South Platte
Low
1321020
24500 I
.
0.00
South
Platte
South
Platte
Low
1321020
24500
I
South Platte
Low
1316800
24500 I
illi
0.00
South
Platte
South Platte
Low
1316800
0/00
South
Platte
South Platte
Low
1315765 i
24000
South Platte
Low
1315765
24000
0400
South
Platte
South Platte
Low
1315595
24000
South Platte
Low
1315595
24000
South
Platte
0100
South Platte
Low
1315395
24000
South Platte
Low
1315395
24000
South
Platte
South Platte
Low
1314350
24000
South Platte
Low
1314350
24000
0.00
1313 200
24000
South
Platte
Low
1313 200
24000
0.00
South
Platte
South Platte
Low
rerk
0100
South
Platte
South Platte
Low
1310630
24000
I
South
Platte
Low
1313 200
24000
South
Platte
South Platte
Low
1308300
South
Platte
Low
1308300
24000
South
Platte
South Platte Low
1300257
South
Platte
Low
1300257
24000
South Platte
South
Platte Low
1295371
I
South
Platte
Low
1295371
24000 I
Aik_
gir
South Platte
South Platte Low
; 1287229
South
Platte
Low
1287229
24000I
0
South Platte
South Platte
Low
1279086
South
Platte
Low
1279086
24000
South Platte
South Platte
Low
1267686
South
Platte
Low
1267686
24000 III
South Platte
South Platte
Low
1257914
I
South
Platte
Low
1257914
24000
I
MI
South Platte
South Platte
Low
1242443
;
South
Platte
Low
1242443
24000
South
Platte
Low
3 124000
24000
South Platte
South Platte
Low
1240000
South
Platte
Low
1239847
2400
South Platte
South Platte Low
1239847
South
Platte
South Platte Low
1238625
South Platte Low
1238625
24000
South
Platte
South Platte Low
1236944
South Platte Low
12369+4
24000
'South
Platte
South Platte Low
1235417
South Platte
Low
1235417
24000
i
*Bold
denotes new cross section
*Italic denotes new cross section name
TableAle
&191ii�llG'
�.ic *�����
1-
EFFECTIVE
Platte
Comp-
MODEL
rn
Dyson Water
�l� Pv7�lt of :g�:�
r �. p�•Y
1�7P� � i P 'r'�„ �
2 , CORRECTED
� x.'�
�
EFFECTIVE
t d
i 3aalf�li�
MODEL
Oil
Oi
'
---..':_T.1I,It. Vt1171171l4-8881811SMCIRIIMIIIK }MM::M.M4MIMAIS m.
HEC-RAS PLAN:
ECM
HE -RAS PLAN:
CEM
V
t
s
REACH
RIVER
STA I
24
(-
_
0.00
South
Platte
V
South Platte 1
1339430 '
4641.4
South
Platte 1
1339430
4641.4
U
South
Platte
South Platte 1
1337280
4638.97
South
Platte
1
1337280
4638.97
;
0.00
0.00
South
Platte
I
South
Platte 1
1334770
4635,15
South
Platte
1
1334770
4635.15
j
0.00
South
Platte
South
Platte
1
1333140
46.34,56
South
Platte
1
1333140
4634.56
0.00
South
Platte
1
1330930
4634..27
South
Platte
South
Platte
1
1330930
4634.27
0.00
South
Platte
South
Platte
1
1330034
4633.26
South
Platte
1
1330034
4633.26
r
0.00
South
Platte
1
1329258
4630.03
South
Platte
-
South
Platte
1
1329258
4630..03
1
South
Platte
1
1328510
4629.4
1
South
Platte
South
Platte
1
1328510
4629.4
0.00
South
Platte
South
Platte
2
1326880
4628.31
South
Platte
2
1326880
4628.311
0.00
South
Platte
South
Platte
2
1325789
4627.33
South
Platte
2
1325789
4627.341
0.01
0.01
South
Platte
South
Platte
2
1325582
4626.09
South
Platte
2
1325582
4626.11
0.00
South
Platte
( a
South
Platte
Low
1323460
4622.08
South'Platte
Low
1323460
4622.081
South
Platte
i •
South
Platte Low
1321020
4618.19,
South
Platte
Low
1321020
4618.1.9,E
0.00
South
Platte = -
f '
South
Platte Low
1316800
4614.38
South
Platte
Low
1316800
4614.431
0.05
South
Platte
South
Platte Low
1315765
4613.7
'
South
Platte
Low
1315765
4613,76
I
006
South
Platte
I I
South
Platte Low
1315595
4613.39
South
Platte
Low
1315595
4613.451
0,06
r
South
Platte
i
South
Platte Low
1315 395
4612.55
South
Platte
Low
1315395
46 12.6 3
0.08
South
Platte
1
South
Platte Low
1314350
4611,39
South
Platte
Low
1314350
461155
'
1
0.16
South
Platte
1
South
Platte Low
1313 200
4611.31
South
Platte
Low
1313200
46110481
1
0.17
South
Platte
I
1
South
Platte Low
1310630
461119
South
Platte
Low
1313200
4611.36
0,17
1
South
Platte Low
1308300
.
South
Platte
Low
1308300
South
Platte
4611.3
South
Platte
South
Platte
Low
1300257 4611.27
`
r 1
South
Platte Low
1300257
South
Platte
:
1
South
Platte
Low
1295371
South
Platte
Low
1295371 4611.26
South
Platte
1
South
Platte Low
1287229
South
Platte
Low
1287229 4611,24
South
Platte
all
South
Platte
Low
1279086
South
Platte
Low
1279086 4611.24
1
South
Platte Low
1267686
r
South
Platte
Low
1267686 4611.23
rot
1
-
South
Platte
South Platte
I
South
Platte Low
1257914
South
Platte Low
1257914 4611.22
MI
South Platte
1
South
Platte Low
1242443
South
Platte Low
1242443 461121
ii
South Platte
I
South
Platte Low
1240000
South
Platte Low
I 124000 4611,.2
',South Platte
I
South
Platte Low
1239847
South
Platte
Low
1239847 4611.2
;South Platte
South
Platte Low
1238625
South
Platte Low
1238625 4611,19
1
South
Platte Low
1236944
South
Platte Low
1236944 4611.19
South Platte
;South Platte
South Platte Low
1235417
South
Platte Low
1235417 4611.19
l'i
IsEtold denotes new cross section
*italic denotes new cross section name
RIVER
-
South Platte
South Platte
South. Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
i
South Platte Low
1315595
31000
South Platte Low
1315595
31000
0
,
South Platte
'able A2 -South Platte Comparison Flow - Un4er 1.0 - `R Condition
1:r EFFECTIVE MODEL *- CORRECTED EFFECTIVE MODEL
HEC RAS PLAN: ECM
REACH
RIVER STA
1339430
South Platte 1
South Platte 1
1337280
South Platte 1
1334770
South Platte 1
FLOW
32500
32500
32500
32500
South Platte 1 1330930
32500
South Platte 1 1330034
26650
South Platte 1
South Platte 1
South Platte 2
South Platte 2
South Platte 2
South Platte Low
South Platte Low
South Platte Low
South Platte Low
1329258
1328510
26650
26650
1326880
30490.09
1325789
30490.09
1325582
30490.09
1323460
1321020
32500
32500
1316800
32500
1315765
31000
HE - S PLAN: CEM
REACH
RIVER STA
;. L
(4
South Platte 1
South Platte 1
'7
South Platte 1
South Platte 1
South Platte 1
South Platte 1
South Platte 1
South Platte 1
South Platte 2
South Platte 2
South Platte 2
South Platte Low
South Platte Low
South Platte Low
South Platte Low
1339430
1337280
1334770
1333140
1330930
1330034
1329258
1328510
1326880
32500
32500
32500
32500
26650:
24
Akar
10,
25650.
26650
30490.09
1325789 1 30490.09
1325582 1 30490.09
1323460
32500
1321020
32500
1316800
32500
1315765
31000
0.00
0,00
0,00
0.00
0.00
0.00
0.00
0.00
IFS
w
0.00
I
0.00
0.00
0.00
0.00
0.00
0.00
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
1315395
1314350
1313200
1310630
1308300
1300257
1295371
1287229
1279086
31000
31000
31000
31000
1267686 1
2257914
1242443
1240000
1239847
1238625
South Platte Low _ 1236944
South Platte Low 1 1235417
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
1315395
31000
1314350
31000
1313200
31000
1313200
31000
1308300
South Platte Low
1300257
South Platte Low
1295321
South Platte Low I 1282229
South Platte Low
1279086
South Platte Low
1267686
South Platte Low
1257914
South Platte Low
1242443
South Platte Low
South Platte Low
124000
1239847
South Platte Low
1238625
South Platte Low
South Platte Low
31000
31000
31000
31000
31000
31000
31000
3100O
31000
31000
31000
1236944 I 31000
1235417
31000
1
I
0.00
*Bold denotes new cross section
*Eta!Ic denotes new cross section name
labl
Al -South Platte Cvmparison 0. water ,Sul dace E
a va dop .r fin -der 500-YF elitipn
I - WECTI_ EL
2 + CORRECTED
EFFECTIVE
MODEL
NEC S
_
PLAN: ECG
E -,R PLAN:
CEi
'.:
__`_.._.._____ .- _
� ...
�_
RIVER
REACH
RIVER
{[�'{� TA
WSELEV
REACH
RIVER
ST
2.4
Illa
-
f ;
South Platte
South Platte 1.
1339430
4642.66
South Platte 1
1339430
4642.6►6
a
0,00
South Platte
South Platte 1
1337280
4640.171
South Platte 1
1337280
4640,17
-
0.00
South Platte
;
South Platte 1
1334770
4637.51
I
South
Platte
1
1334770
4637.51
I
0.00
South Platte
South
Platte 1
1333140
4637.05
South
Platte
1
1333140
4637,05
0.00
South
Platte
South
Platte 1
1330930
4636.79
I
South
Platte
1
1330930
4636.79
0.00
South
Platte
South
Platte 1
1330034
4635.92
South
Platte
1
1330034
4635.92
0400
South
Platte
1
1329258
4631,68
,
0400
South
Platte
South
Platte
1
1329258
4631.68
I
South
Platte
South
Platte
1
1328510
4631.85
I '
South
Platte
1
1328510
4631.85
,,eih.
0.00
South
Platte
2
1326880
4631.3
"
_
0.00
South
Platte
South
Platte
2
1326880
4631.3
South
Platte
2
1325789
4631.14
0.00
South
Platte
South
Platte
2
1325789
4631.14
I
South
Platte
South
Platte
2
1325582
4627.56
I
South
Platte
2
i 1325582
4627,56
'
0.00
South
Platte
South
Platte
Low
1323460
4622.'9
South
Platte
Low
1323460
462 2.9 9
a
0.00
South
Platte
South
Platte
Low
1321020
4619.68
South
Platte
Low
1321020
4619.68
MI
gli
ON
South
Platte
South
Platte
Low
1316800
4616.84
South
Platte
Low
1316800
46163
;
0.06
South
Platte
South
Platte
Low
1315765
4616.26
South
Platte
Low
1315765
4616.33
Ail
0.07
South
Platte
South
Platte
•
Low
1315595
4616.04
South
Platte
Low
1315595
4616.12
0.08
South
Platte
South
Platte
Low
1315395
4614.11
South
Platte
Low
1315395
4614.23
me
0.12
South
Platte
Low
1314350
4612.64
I.Jr
0.39
South
Platte
South
Platte
Low
1314350
4612.25
South
Platte
South
Platte
Low
1313200
4612,09
South
Platte
Low
1313200
4612.51
l
0.42
South
Platte
Low
1313200
4612.3
0.46
South
Platte
South
Platte
Low
1310630
4611.84
South
Platte
South
Platte
Low
1308300
Sim
South
Platte
Low
1308300
4612.15
South
Platte
South
Platte
Low
1300257
South
Platte
Low
1300257
4612,08
1.
South
Platte
Low
1295371
4612.04
South
Platte
South
Platte
Low
1295371
South
Platte
Low
1287229
4612
South
Platte
South
Platte
Low
1287229
South
Platte
South
Platte
Low
1279086
South
Platte
Low
1279086
4611,98
South
Platte
I
South
Platte
Low
1267686
South
Platte
Low
1267686
4611.96
South
Platte
Low
1257914
4611.93
South
Platte
South
Platte
Low
1257914
South Platte
South Platte
Low
1242443
South
Platte
Low
1242443
4611.9
-
l
South Platte
South Platte
Low
1240000
South
Matte
Low
124000
4611.88
South
Platte
Low
1239847
4611.88
I-
.
South Platte
South
Platte
Low
1239847
South Platte
I
South Platte
Low
1238625
South Platte
Low
1238625
4611.86
I Ems
South Platte
South Platte
Low
236944
South Platte Low
1236944
4611.85
II.
South Platte
South ` Platte
-
Low
_1
1235417
South Platte Low
1235417
4611.84
I it
* Bold denotes new cross section
*Italic denotes new cross section name
Table A2 -South f Platte
ComparisonLa
0 W iver
5 i M -YR Condition
1- EFFECTIVE
MODEL
2 - CORRECTED EFFECfi3VE MODEL
,]
HEC-RAS PLAN: ECM
HEC-RAS PLAN:
CEM
RIVER
ER
t REACH
RIVER
STA !
FLOW
REACH
R/VT... STA
FLOW
24_
nil
- '.
f$4
South Platte
South
Platte
1
1339430
57500
South Platte
1 -
1339430
57500
1
0,00
South Platte
South
Platte
1
1337280
5.7500
•
South Platte
1 -
1337280
57500
1 it
0.00
South Platte
South
Platte
1
1334770 i
57500 :
South Platte
1
1334770... .
57500
F
ft
0.00
I
South Platte
South
Platte
1
1333140 t
57500 '
South
Platte
1
1333140
57500
1 IL
0.00
0.00
South
Platte
South
Platte
1
1330930
57500
South
Platte
1
1330930
57500
r
•
South
Platte
South
Platte
1
1330034
35075
South
Platte
1
1330034
35t75i
0.00
South
Platte
South
Platte
1
1329258
35075
South
Platte
1
1329258
35075
1
0.00
South
Platte
South
Platte 1
1328510
35075
f
South
Platte
1
13285.10
35075
1
000
South
Platte
South
Platte 2
1326880
4887 7.52
I
South
Platte
2
1326880
48877.52
1
0.00
1
0400
South
Platte
South
Platte 2
1325789
48877.5.2
r
South
Platte
2
1325789
48877.52
1 '
1
South
Platte
South,
Platte 2
1325582
48877'.5.2
[
South
Platte
2
1325582
48877.52
r1.1
0.00
0.00
South
Platte
j
South
Platte Low
1323460
57500
1
South
Platte
Low
1323460
57500
r [t
0,00
South
Platte
I
South
Platte Low
1321020
575001
South
Platte
Low
1321020
57500
IIII
0.00
South
Platte
[
South
Platte Low
1316800
57 001
South
Platte
Low
1316800
57500
al
l
0,00
South
Platte
C
South
Platte Low
1315765
510001
South
Platte
Low
1315765
51000
r
a .00
South
Platte
I
South
Platte Low
1315595
510001
South
Platte
Low
1315595
51000 .
r
0.00
South
Platte
f
South
Platte Low
1315395
5100►
(
South
Platte Low
1315395
51000
r
- - -
South
Platte
1
South
Matte Low
1314350
51000
' .
South
Platte
Low
1314350
51000
w 11
0.00
0.00
South
Platte
1
South
Platte Low
1313200
51000
'
South
Platte Low
1313200
51000
VS
i
South
Platte
1
South
Platte Low
13.0530
51000
•
South
Platte Low
1313200
51000
An
0.00
up
South
Platte
1
South
Platte Low
1308300
South
Platte Low
1308300
51000
South
Platte
South
Platte Low
1300257
South
Platte Low
1300257
51000
1
I
South
Platte
i
South
Platte
Low _it__1295371
South
Platte Low
1295371
51000
[MS
South
Platte
`
South
Platte
Low
1287229
.
South
Platte
Low
1287229
51000
r 11
South
Platte
L
South
Platte
Low
1279085
South
Platte Low
1279086
51000
C
South
Platte
`
South
Platte
Low
1267686
South
Platte Low
1267686
51000
r
-
South
Platte
South
Platte
Low
1257914
South
Platte Low
1257914
51000
j
j
South
Platte
South
Platte
Low
2242443
South
Platte Low -.-e
1242443
51000
South
Platte
South
Platte
Low
1240000
South
Platte Low
124000
51000
r
n
-
South
Platte
South
Platte
Low
1239847
South Platte Low
1239847
51000
South Platte
South
Platte Low
1238625
South
Platte Low
1238625
51000:
:is
I.
South Platte
South
Platte Low
1236944
South
Platte Low
1236944
51000
IT
South Platte
South
Platte Low
1235417
South Platte
Low
1235417
51000
*Bold denotes new cross section
*italic denotes new cross section name
APPENDIX B
TABLE Al AND A2 COMPARISON OF
POUDRE MODEL RESULTS
Table Al •Poudre River Comparison of water Su ace Elevation ir Under 10-YR Condition
1 a EFFECTIE MODEL 2 • CORRECTED EFFECTIVE MODEL
HEC415 PLAN:; ECM
HECrRAS PLAN: CEM
RIVER
REACH
RIVER
STA
W.S. ELEV
REACH
RIVER
STA
W,5* ELEV
4
-=.-
Poudre
Lower
4613.19
Lower
12901
4613,73
Poudre
Lower1098
4610.01
Lower
10998
4610,52
Poudre-
9157
4608.02
Lower4608,52
PoudreLower
8341
4607.55
i
8341
4608.31
lel
0,76
Poudre
Lower
7819
4607.09
Lower
7819
4608.02
ini
0.93
Poudre
Lower
7609
4606.79
Lower
7609
4507.74
0.95
Poudre
Lower
• `
4605,38Lower
6936
4606.45
1.07
Poudre
Lower
5257
4604.49
, -
4605.2
0.71
Poudre
Lower
3463
4602.02,`
a
4604.33
2.31
Poudre
Lower
2243
Lower4602.55
Poudre
Lower
nun
Lower1371
4601.36
Poudre
Lower
560
Lower
560
4599.53
- -
*Bold denotes new cross section
*Italic denotes new cross section name
.-.. Lim .... ..-•--\..w..r....
Table
AZ -Poudre
River Comparison
of Flow
-
Under
10-YR
Condition
1 - EFFECTT E MODEL
2 - .CORRECTED
EFFECTIVE
MODEL
HECP
RA PLAN:
r.\..�_.vl..♦w\..._
ECM
. r II 11
x
v, v . u• •v m u+ - u. -.v
HEC-RAS
r . r .a
PLAN: CEM
RIVER
..:...,........,..._.
.,. _:
REACH
u
.'.... ...
.
..
RIVER
uu. ..
5 `-�
c\..v.._v.1':Y Yr%YIIv4Y�W.nI.YM1NWc1.M.
FLO
�
_....-.-..-..
.. ._.--..
REACH
-...
- ...._
.. ...
RIFER
.. .. ....... _...
STS►
.�. .. �.. ..
vfut •
FLOW
•
-.
'
1
Cf0
x
Poudre
Lower
12901
3310
,Lower
12901
3310
�
0.00
Poudre
Lower
10998
3310
Lower
10998
3310
ims
0.00
Poudre
Lower
9157
3310
Lower
9157
3310
upri
c.00
Poudre
Lower
8341
3310
Lower
8341
3310
ID
0.00
Poudre
Lower
7819
3310
j.....
Lower
7819
3310
Li
0.00
Poudre
Lower
7609
3310
i
Lower
7609
3310
0.00
Poudre
Lower
6936
3310
Lower
6936
3310
0.00
Poudre
Lower
5257
3310
Lower
5257
3310
0100
Poudre
Lower
3463
3310
Lower
3463
3310
re
0.00
Poudre
Lower
2243
Lower
2243
3310
Poudre
Lower
1371
Lower
1371
3310
la
Poudre
Lower
560
Lower
560
3310III
*Bold denotes new cross section
*Italic denotes new cross section name
legation Under & idition
Table A1-Poudre River Comparison O "ter ` ur ace
RIVER
1-
EFFECTIVE
MODEL E,
2 - CORRECTED
EFFECTIVE
MODEL.
2-1
HEC-RAS
PLAN:
CEM
HEC-RAS
PLAN: ECM
REACH
RIVER STA
W 4St ELEV
REACH
RIVER
5TA
W.S.
ELEV
I (1t)
p (IQ�
a
(ft)
Poudre
Lower
12901
b14.3=4
Lower
12901
4614.43
1.19
Poudre
' Lower
10998
511,,37
Lower
10998
� 46111
Alt
0.33
Poudre
Lower
9157
460937
f
Lower
9157
460932
ohms
0.35
Poudre
Lower
8341 I
4608.97
Lower
8341
4609.48
1
0,51
Poudre
Lower
7819
4608.54
'
Lower
7819
4609.11.
0.57
'Poudre
Lower
7609
4608,23
Lower
7509
4608.77
0.54
pou&e
Lower
6936
4606.8
Lower
6936
4607.34
0.54
Poudre
Lower
5257
4605.72
Lower
5257
4606.11
0,39
Po►iore
Lower
3463
4603.89
Lower
_ 3463
4605.17
1,28
p'ooi irr
Lower
2243
Lower
2244
4603.38
Piyudre
S
Lower
1371
Lower
1371
4602.39
Poudre
Lower
560
Lower
550
4600.82
1
*Bold denotes new cross section
*italic denotes new cross section name
•t -
Table A2 Pawl re
River Comparison of Flow
di Under
50-YR
Condition
.:. _ .. - I 4..EFFECTIVECT4
MOM.
2 ,* CORRECTED
• EFFECTIVE0 D
EL
W
E C -F AS PLAN:
l:
ECM
H
E C
R E P LAN: CE M
RIVER
'REACH
W
l
'E R 5fi
FLOW
REACH
RIVER SIA
FLOW
2s1.
i cis)
Poudre
Lower
12901
7550
Lower
12901
7550
y
0,00
Poudre
Lower
10998
7550
Lower
10998
7550
0.00
Poudre
Lower
9157
7550
Lower
9157
7550
0.00
Poudre
Lower
8341
7550
Lower
8341
7550
I
0.00
Poudre
Lower
7819
7550
Lower
7819
7550
leI
0.00
Poudre
Lower
7609
7550
Lower
7609
7550
a
j
0.00
Poudre
Lower
6936
7550
Lower
6936
7550
an
0400
Poudre
Lower
5257
7550
'Lower
5257
7550
0400
Poudre
Lower
3463
7550
Lower
I 3463
7550 'L
I 0.00
Poudre
Lower
2243
Lower
2243
7550
Poudre
Lower
1371
Lower
1371
7550
Poudre
Lower
560
Lower
560
7550
*Bold denotes new cross section
*Italic denotes new cross section name
Table Al -Poudre River Comparison of Water Surface evation - LIn er 100-YR ConWon
1- EFFECTIVE MODEL 2 - CORRECTED EFFECTIVE MODEL
HEC-RAS
PLAN:
ECM
HECWR
PLAN:
CEM
RIVER
REACH
RIVER
STA
W.S. ELEV
REACH
RIVER
6TA
W.S. ELEV
24
Poudre
Lower
12901
4614,79
Lower
12901
4614.79
_,r
0.00
4612.18
0.15
P (Du F: -d
r gym.
Lower
10998
4612.03
Lower
10998
P"Li7T
-,
Leer
4610.1
-
0,22
�, p. a u.
,.C o
Lower
4 609.68
Lo er
8
4610.1
l
Pouf]
re I-'
Lower
281
,
4£0
,
.
Lo
r
i
460�6
Lower
7609
7609
4609.2$
0,42
oudl
rye
Lowe r
6936
6936
ova
r
Lowe r
5257!
466.2
L+ar+e
r5257
4606.57
E.. 37
you it
�,
Lower
3463
4604.28
3463
4605.58
130
.:.
,
Lower
2243
Lower2243
4603.79
Pout!
re
Lower
1371
Lower
1371
4602.87
Poudre
Lower
560
Lower
560
4601.29
*Bold denotes new cross section
*italic denotes new cross section name
Table AZ oPoudre River Comparison of F - Under 1OO YR Condition
RIVER.
EFFECTIVE
MODEL
2 o CORRECTED
b
EFFECTIVE
MODEL
HE&R
6
PLAN
-7 ECM
HEC-RAS
PLAN: CEM
REACH
RIVER
STA
.._ I
FLOW
REACH
r
RIVER STA
FLOW
24
ti, •
C
fs
'nil
Poudre
0.00
7
Lower
12901
10600
Lower
12901
10600
Poudre
I
Lower
10998
10600
I ,
Lower
10998
10600
0.00
Poudre
0.00
Lower
9157
10600
Lower
9157
10600
Poudre
Lower
8341
10600
!
Lower
8 341
10600
0.00
Poudre
a
Lower
7819
10600
Lower
7 819
10600
0.00
Poudre
1
0400
Lower
7609
10600
Lower
7609
10600
0.00
Poudre
Lower
6936
10600
Lower
6936
10600
Poudre
Lower
5257
10600
Lower
5257
10600
0.00
Poudre
Lower
3463
10600
Lower
3463
10600
0.00
Poudre
i
Lower
2243
Lower
2243
10600
Poudre
Lower
1371
Lower
1371
10600
Poudre
?
Lower
560
Lower
560
10600
i
*Bold denotes new cross section
*Italic denotes new cross section name
Table Al -Poudre River Comparison of Water Surface E evatron n , er # -YR Con + ition
RIVER
1 it
EFFECTIVE
E IODEL
2 pp CORRECTED
EFFECTIVE
MODEL
-__
24
_
1E+C-RAS
PLAN
..
.ECM
.,.
i1nn/Pl1}17R�lRI!}fRl!!�1!•ngs
HEC-R
S
nlu.�i
PLAN:
nn i.ww.IqWP
cErvI
REACH
RIVER
STA
WS. ELEV
REACH
RIVER STA
WS.
ELEV
a.:ip-'ra:-!
Lower
12901
4615.89
Lower
12901
4615.6:
-0.21
PoU r E
I
Lower
10998
461.3..84
Lower
10998
4613.45
-0.39
Poudre
Lower
9157
4611.99
Lower
9157
4612.16
0.17
Poudre
Lower
8341
4611.55
Lower
8341
4611.94
0.39
Poudre
0
Lower
7819
4610.94
Lower
7819
4611.28
0.34
0.22
Poudre
Lower
7609
4610.37
Lower
7609
4610.59,
ALL
0.26
Poudre
Lower
6936
460834
Lower
6936
-
4609.2
Poudre
Lower -
- 5257
4607.47
'
Lower
52 57
4607.98
0,51
Poudre
Lower
3463
4605.07
Lower
3463
4606.85
1.78
Poudre
Lower
2243
Lower
2243
4605.1
Poudre
Lower
1371
Lower
1371
4604.14
Poudre
Lower
560 '
__
Lower
560
4602,29
*Bold denotes new cross section
*italic denotes new cross section name
Table AZ-Poudre River Comparison
of
Flow
a Under
500-YR Condition
1- EFFECTIVE
MODEL
L
2 - CORRECTED
EFFECTIVE
MODEL
HECAAS PLAN
a ECM
HEC-RAS
PLAN:
CEM
RIVER
REACH
RIVER
STA
FLOW
REACH
RIVER 5TA
FLOW
1
24
�.
Poudre
Lower
12901
22800
Lower
12901
22800
II
gp
0.00
Poudre
Lower
j 10998
22800
Lower
10998
22800
TI
0,00
Poudre
Lower
! 9157
22 800
Lower
9157
22800
al
0.00
Poudre
Lower
8341
22 800
Lower
8341
22800
i
0.00
Poudre
Lower-- -.- -.....
7819
22800
Lower
7819
22800
; II
0.00
Poudre
ilLower
7609
22800
Lower
7609
22800
;
Illb
0.00
Poudre
Lower
6936
22800
Lower
6936
22800
IIIIII
0.00
I
Poudre
Lower
5257
22800
Lower
5257
22800
IL
0.00
Poudre
Lower
3463
22800
Lower
3463
22800
M
0,00
Poudre
I
Lower
2243
Lower
2243
22800
1111
Poudre
Lower
1371-_
Lower
1311
22800
lei
Poudre
'
Lower
56+0
Lower
560
22800
lig'
*Bold denotes new cross section
*italic denotes new cross section name
APPENDIX C
TABLE 3 AND 4 COMPARISON OF
SOUTH PLATTE PLAN 1 ECM RESULTS
Table 3 South Platte Model 1 Effective Condition Model Development - Flow Data Comparison
River
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Plane
South Platte
South Platte
South
South
South
South
South
South
South
South
South
South
South
South
South
South
Reach
Platte 1
Platte 1
Platte 1
Platte 1
Platte 1
Platte 1
Platte 1
Platte 1
Platte 2
Platte 2
Platte 2
Platte Low
Platte Low
Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
Cross Section
1339430
1337280
1334770
1333140
1330930
1330034
1329258
1328510
1326880
1325789
1325582
1323460
1321020
1316800
1315765
1315595
1315395
1314350
1313200
1310630
US 34 CLOMA Model Plan 1 Effective Condition Model Plan 1 - Atkins CLOMA Model
100 -year 10 -year 50 -year 500 -year 100 -year 10 -year 50 -year 500 -year 100 -year 10 -year 50 -year 500 -year
32 500
R 32500
+ 32500
P 32500
0 32500
26650
26650
L 26650
K 30490.09
30490.09
30490.09
H 32500
32500
F 32500
I
C
B
A
11000
11000
11000
11000
11000
9955
9955
9955
10047.81
10047.81
10047.81
11000
11000
11000
24500
24 500
24500
24500
24500
22050
22050
22050
23270.35
23270.35
23270.35
24 500
24500
24500
Atkins CLOMA Model
100 -year 10 -year 50 -year
32500 11000 24000
31000 11000 24000
31 000 11000 24000
31000 11000 24000
57500
57500
57500
57500
57500
35075
35075
35075
48877.52
48877.52
48877.52
57500
57500
57500
500 -ye sr
57000
51000
51000
51000
32500
32500
32500
32500
32500
26650
26650
26650
304 90.09
30490.09
30490.09
32500
32500
32500
11000
11000
11000
11000
11000
9955
9955
9955
10047.81
10047.81
10047.81
11000
11000
11000
24500
24500
24500
24500
24500
22050
22050
22050
23270.35
23270.35
23270.35
24500
24500
24500
57500
57500
57500
57500
57500
35075
35075
35075
48877.52
48877.52
48877.52
57500
57500
57500
Plan 1 Effective Condition Model
100 -year
31000
31000
31000
31000
31000
10 -year
11000
11000
11000
11000
11000
50 -year
24000
24000
24000
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Plan 1 - Atkins CLOMA Model
0
0
0
0
0
0
0
0
0
0
0
0
0
0
500 -year 100 -year 10 -year 50 -year 500 -year
51000
51000
51000
0
0
l
0 0
0 0
0 0
0
0
0
Table 4 South Platte Model 1 Effective Condition Model Development - Elevation Comparison
River
South Matte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
South Platte
DATA FROM EIS
Reach
South Platte l
South Platte 1
South Platte 1
South Platte 1
South Platte 1
South Platte 1
South Platte 1
South Platte 1
South Platte 2
South Platte 2
South Platte 2
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
South Platte Low
Cross Section
1339430
1337280
3334770
1333140
1330930
1330034
1329258
1328510
1326 880
3325789
1325582
1323460
1321020
1316800
1315765
1315595
1315395
1314350
1313200
1310630
US 34 CLOMA Model Plan I Effective Condition Model Plan I a Atkins CLOMA Model
100 -year 10 -year 50 -year 500 -year 100 -year 10 -year 50 -year 50O -year 100 -year 10 -year 50 -year 500 -year
S 4641.75
R 4639.32
Q 4635.08
P 4634.47
0 4634.16
4633.25
4630.02
L 4629.34
K 4628.17
4627,09
4626.01
H 4622.16
G 4618,04
F 4614.18
ID
C
B
A
4639.16
4636.95
4632.66
4631.49
4630.8
4630.18
4629.03
4626.7
4625.03
4624.06
4623.67
4620.71
4616.26
4609.99
4641.14
4638.96
4634.42
4634.11
4633.78
4633.05
4631.72
4628.56
4627.21
4626.15
4625.3
4621.81
4617.48
4612.94
4643.04
4640.49
4637.08
4636.47
4636.13
463 5, 21
4631.12
4631.17
4630.31
4630.06
4627.59
4622.96
4619.76
4616.83
4641A
4638.97
4635.15
4634.56
4634.27
4633.26
4630.03
4629.4
4628.31
4627.33
4626.09
4622.08
4618.19
4614.38
4639.15
4636.91
4632.83
4631.24
4630.65
4629.95
4627.85
4626.69
4625.09
4624.22
4623.81
4620.54
4616,67
4610.33
4640.76
4638.65
4634.21
4633.69
4633.39
4632.48
4629.58
4628.59
462732
4626.37
4625.46
4621,65
461737
4613.17
4642.66
4640.17
4637.51
4637.45
4636.79
4635.92
4631.68
4631.85
4631.3
4631.14
4627.56
4622.99
4619.68
4616.84
-0.35
-0.35
0.07
0.09
0.11
0.01
0.01
0.06
0.14
0.24
0.08
-0,08
0.15
0.2
-0.01
-0.04
0.17
- 0.25
-0.15
-0.23
- 1.18
-0.01
0.06
0.16
0.14
-0.17
0.41
0.34
-0.38
-0.31
- 0.21
- 0.42
- 0.39
-0.57
-2.14
0.03
0.11
0.22
0,16
-0.16
0.29
0.23
-0,38
- 0.32
0.43
0.58
0.66
0.71
0.56
0.68
10.99
1.08
-0.03
0.03
- 0.08
0.01
Atkins CLOMA Model Plan I Effective Condition Model Plan 1 - Atkins CLOMA Model
100 -year 10 -year 50 -year 500 -year 100 -year 10 -year 50 -year 500 -year 100 -year 10 -year 50 year 500 -year
4613.62
4613.24
4612.45
4611.19
4608,9
4605.4
4609.72
4609.46
4609.07
4607.78
4612.47
4612.12
4611.49
4610,15
4616.83
4616 67
4614:01
4611.84
4613.7
4613.39
4612.55
4611.39
4611.31
4611.19
4609.8
4609.56
4609,17
4608.05
4607.85
4607.78
4612.51
4612424
4611.56
4610.36
4610.26
4610.15
4616.26
461604
4614.11
4612.25
4612.09
4611.84
0.08
0,15
0.1
0.2
2A1
5,79
0.08
0.1
0.1
0.27
0.04
0.12
0.07
0.21
-0.57
-0.63
0.1
0.41
APPENDIX D
TABLE 1 AND 2 COMPARISON OF
POUDRE PLAN 1 ECM RESULTS
,^1
Table 1 Poudre River Model 1. Effective Condition Model Development - Flow Data Comparison
Atkins CLOMA Model
Plan 1 Effective Condition Model Plan 1 - Atkins CLOMA Model
Cross Section 100 -year 10 -year 50 -year 500 -year 100 -year 10 -year 50 -year 500 -year 100 -year 10 -year 50 -year 500 -year
12901 10600 3310 7550 22800 10600 3310 7550 22800 0 0 0 0
10998 10600 3310 7550 22800 10600 3310 7550 22800 0 0 0 0
9157 10600 3310 7550 22800 10600 3310 7550 22800 0 0 0 0
8341 10600 3310 7550 22800 10600 3310 7550 22800 0 0 0 0
7819 10600 3310 7550 22800 10600 3310 7550 22800 0 0 0 0
7609 10600 3310 7550 22 800 10600 3310 7550 22 800 0 0 0 0
6936 10600 3310 7550 22800 10600 3310 7550 22800 0 0 0 0
5257 10600 3310 7550 22800 10600 3310 7550 22800 0 0 0 0
3463 10600 3310 7550 22800 10600 3310 7550 22800 0 0 0 0
Table 2 Po ad re River Model 1 Effective Condition Model Development - Elevation Comparison
Cross Section
12901
10998
9157
8341
7819
7609
6936
5257
3463
Atkins CLOMA Model
100 -year 10 -year
4614.79
4612.04
4610.08
4609.63
4609.09
4608.83
460738
4606.2
4604.28
4613.19
4610.01
4608.01
4607,54
4607.04
4606.78
4605.38
4604.49
4602.02
Plan 1 Effective Condition Model
50 -year 500 -year 100 -year 10 -year 50 -year 500 -year Plan 1 a Atkins CLOMA Model
4614.34
4611.38
4609.34
4608.93
4608.46
4608.22
4606.8
4605.72
4603.89
4615.89
4613.84
4611,95
4611.5
4610.8
4610,36
'4608.94
4607.47
'4605,07
4614.79
4612.03
461011
4609,68
4609.19
4608.83
4607.38
4606.2
4604,28
4613.19
4610.01
4608.02
4607.55
4607.09
4606.79
4605,38
4604.49
4602,02
4614.34
4611.37
4609.37
4608.97
4608.54
4608.23
4606,8
4605.72
4603,89
4615.89
4613.84
4611.99
4611.55
4610.94
4610.37
4608.94
4607.47
4605,07
100 -year
-0.01
0.03
0.05
0.1
0
0
0
0
0
10 -year
0
0.01
0.01
0.05
0.01
0
0
0
0
50 -year 500 -year
-0.01 0
0.03 004
0.04 0.05
0.08 0.14
0.01 0.01
0 0
0 0
0 0
0 0
APPENDIX E
FEMA DRAWINGS AND MAPS
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APPENDIX F
PLAN 1 ECM FLOODPLAIN MODEL OUTPUT
a
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nuth • Piatln !
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instill Now 1
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linn!h Mane '1
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1330010
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4 I'S
0.15
11 14
4, Int
11122.
.Li 1;
0,141
11 apt
HAD
0.41
1144
1161
0 OD
RP
0411
0130
0,-17%
d. 29'
n 3T,
11 .!1
0.13
0.31
Is 3.°
0.46
0.53
If 1;i2
0.32
0.26
II 20
II
0.26
0_20
0.26j
Hi RAS 71iiirl EQ :Clrr'i" avail I
5uulfi Plano I .nw
abut Pjfin LLow
South Lc*
1415.846,
131 etOG
131 t.
1D -1,554i
1tdi1 Pih1in Lv* 131' 1
14,411 Platte Lulu 13 I Steil 1047
'}ouch Platte Low 1315395 50yr
',With Platte Low 1315395 1 f10yr
:;nulh Platiw I nw 1315395 50CM-
i_ PLAIN Lri>5
'Stall FIJIAN Ina
Suth Platte Low
�rllh PItfta I_nw
Stith Plane Loot
Ica Pia I Ifi*•
SOt Platte Low
:Suet Float L'IW
.Sawl44 POMP LOW
.!uui# Pluck tuw
*NM flatly Wye
l5trolti PM* )(sow
1314 330 1 up
T314.393 5U•gni
13'143360 ';i IDIT
itiincn 58
fi31
Tairapkao
lartang
4.3 l,0110
13141
1310080
11 II0t130
1.1+11630
*Olt
Ser
imp
!Fogr
11400.00
241.00 00
$'11 WIll
ilIr1 rm
2MISII1
!:10.00
.E1i) 00
MOO,
*OM 7f
Abbe) r0
4I1D3 70
A.5MQ
LDIXI TO
'6414 flu
451141 7r;]
4597.70
4597.70
4h10
-e"4'' 3e. Viet 1 r by
(A) I El
114119 .S4
3111.2 24
-
=il4 i:n Vii. •
4809,17
410 I r7.
4612}t
4814.11
4ri1ri ll'.
45411.3'11
441 I'. li"
,46125
4,1+,x7 65
4510.26
4611.31
461:2 ea
Tri
4CCC 15
4811.NA
A
!l1 841
4.70
4607479
4
�i ti (I Ks
40th Li
44X'1 P6
�i or 5j
4001 -111
C. SIhlN4 `'rii rir�
IF I ?Pei
0.0101841
II lJ4iOO i .I.a
rN:40((;74?
T11181"4'(1
Flat! Trflp With tn. muds $
I a X11 1111
2 15 3) It, 65 21171 Ili
4 PO 1g.f•-[1.? isnid 5!i
5,19 704.P 5E- 01117
Sit 142,3 !e 4195.45
Arum ihI 0.000928 31 200761 14,17.86
-sr II39• n"Ill I#' lit 01,11$9 rcal721
4613.1' I1 Rif '.i !i 1_ OS 20 3sf • Er?
4616.14 Li cfal ll I it 42 Ji311137 X18 2 i
1111111 r 1"4 rirrl lt4 4 lit 30111 f 'i4 '1-
4610.91 l: !Kt O3 tu2a run I Do 3240.20
jr I I or rn 11:11 I !Pi In th3 b i ll A l iSre< 3.490 El
4613.11 0.+002021 a NO S4 1St342
au!? ICI 181011'x' ? Iii Dritol 07 8100 25
401 all: 0411083 r Oh ;r'Nollti.46 0,947 SI
.451.2 DI 6.0 00,103 3.1l3 1734162 Ill 601'!x. It
41 1° lieu , otackeoft n 7S 121?ell.N Nilo 1 r
4103 Iv 0 x : .4- 1.09{ 4ta467.11 67'11 }S
4E440 a ia cov2a 114 516ii 114 5116 441.
401140 CI 010001 l Ali 4000070 hitIlitl #f
0.30
IItu5
n :IT
0.33
fir
aT?
II'5iI
O. t4
004
IA OE
Ott
I IL-- Nn ECM Pow
cites L. Pn *iia turtipe
Roach Pia X111 PO" Thia1
IcitI
.11210 OD
Irmo Do
ranuil
Lawn'
Castor
Limy
Loam
Lomm
Lam:
Lawn
Lu*w
Li}.Y11
LINtat
Imo#►
IL VH
i fig99
16360
w
SUP
111911
h Mir
ifip
Nor
13
1p
tp'I
IJJOJT
OOyr
La'*lr Mat5
Lo.iltiJi:1&14t
LtrtOW 041
Lamm nI
LBWS r16 H
Loom Jai LI
Low 000
4. Jss,t 78:10
Ltntaii 6123
LOOS'
L tow
Laws
uyiwi
LaWar
L
toktil
ban
Joke
List
IL r
u
Lamm
MIR
9255
SET
7
5EP
Mal
3462
Fllw
Sap
I'Mi rr
riDerrt
sup
map
or
.i
Fuer
-ill
753M
LuM90 CO
B00 ,
3aiD raw
013
'MOO OP
13990 OD
th [$7
"75 -VI ri.
1D0 0 c
2.2900 ►X'
331'010
15%
infix]. raiD
900 CSI
:310 OC•
I tib ! I,t
l E. ! P;l
'fa?fuel ill..
► mp
4€07 00 4913 10
4kitiT A,F14 i
4417.90 4814 70
1R 401b4)y
trkl
WA AD
1814 RI
and !ltir
4603.70
4f1
4603.70
s!:,al 9I.
4598.95+
4598965
re• r
4610 0 I
41 000 3T
4m11R 03
um 04
Is I►iI
'1.1E0 37
Oval. 11
44. I ' 0i
4W? 09
4459 54
4609.19
4481D us
tm WS,
4617' .117
10111.101
4613.4E
abl4 art
*lid W1
451 4 1t*
1.811 WI
4612.87
4607.91
4007.91
4 r1r l
460&501
4094 .:11
err
4608.81
-1100411.
.1e'"i 3s
411k2 SC)
40 s irt
40(7. rtrii
4111%►.1!a
n1'() ?j-
4 r.' I tl3
et r4.31
4500 11
4em► Tell
4F'+1 2Tl
INTO
013'00491
ib(r9iic'1,
0.000901
O 04.11V-4.
-,
DOAN
O 0143721
O n& e S
0.001461
I r
0.000687
I I:1ll1 f,
': 111){►tl;"
O.IH9011i«
rrfaril1441
O 000000
0. tityirge
0.000954
'0,41-'0,41-beitli. 4iI O+rt
X1 1 (si hti
alto 36
I!+ 4921 tt
423 90.445ie
y 55 VO2
tia
211
2 vs
is
7;1'ti'
2x2014
37.'1
=I t air
► ;?,l
a,39 -14
5865,84
• to
2710# Imo.
490191
ptaF 4TS.
leklitt 415
1548.41
9110 T I).
3655,75
5301.13
tnailrdir
1t1
19E2 73
,,?`fir, 132
14s; UT
47-4 04
19024TO
164C 00
'44.11;
rr
1 jb0,*1
2'4Cka4b9
;373 Di
211e4 rat)
1231,83
'era .i
i f 511
2736.23
sthot, 11 4i9Da Y0 I I £floeft 00114 4 el 12"19.51 $131 u:
4600,11 la* 73 .&T X008 41 Ij.onto 9 V 29* 20 1963.61
4600.11 4 iLnd e1 8!1 4000 rj 8.0O14554t. fa ca -,,, tine 14i' 199'1 r!!'a
411rir! 1 i 4410 I r 4608,511 45'11 ?I 0.001957rI 742 L14 r0 VD? TO
1
dMic 110 ket Na 4603,31 Jo l il1~► 0 441 Re Is h 24 1140,17 795 2;
4597.90 lace 40 tivari 90 .40OT 1' 0901 rl E' jQ Xila 40 i2Dit 33
I
iejt:i film 4h1' it ofigt.tt1 4607.71 u.WI Al a e nil 3485.714 1143
4{97 IKa 4049 04 4607 EJ 460+9.23. 0 0017Y 7 4?' 7376.88 V45 1`0
Woo ifio +4fo+1 40 Mgr 2'0 4004 33+4 0.ocaatt 2 lb JIMO I fI et) tit'
4S501 .00 lairA ;it) +I 1355 4fificin 0 &iota '" Si 918'44 Me P7
2.U7J 130 1 :e a 20 4604 311 400021. 0.000524, J BB .?2.4$ Au? 1414? n4
.50 4i07 411' 4605 10. 4 FIDT S5a 0MUM 0 0S 1'15T0 02 319B.03
4596.1 Jr tli 90 4003 oil ro 991401 e Eti2 513.31 271+ 36
t- .I 14 4sel I1y 31.P.k 6304 4z I, 40 t ri 46 r 5r 4 44 73s'36 40
i- ; I 7i Iteti.iie . r742 ti 4604.81 p.Ouvot a, r; 3628,75 11)43, 011
4.9(4: I'Si 17(5 Di *4050'7 7!551!55 9.1 0 0.04517 4''4 151 [Qr ®G la. 35211.24
rip•& ctl
039
H4*
Its
II.
Dix
it 314
t.1417.
11'8
II MI
11' fa
A'
gsg•
OS
970
APPENDIX G
PLAN 2 CEM MODEL OUTPUT
1st)
r Ej Poii
Rant'
nlfli't 7* 1
:souvomunla
'I
Savin Pia 1
Swam Puma *I
CEM
-I.:3ir 01171
h3310349
r.S3Sien
Oti111 Ramo 1
1tl+itlil Patna i
t-tutth P tit 1
iusu1 Nam
Usti Puile 1
1��Iitliil Putts, . 1
uStaab Plaint I
Sat P1411■ 1
h1a411a I
'Snit Plai. t
Hawn telaite 1
Sfairf RADA l
!WTI RAIN
Staab P1> r
Swift Pei i.
Seidiff Magi
1
.ro
' 331280
1.lt2u
nnsu
1114770
13314.
1.434770
'1334770
330590
10
1iEL
'i O
Peaks
Oily
lv
5000,
Smiths Plaint I
5cC Praha
t Platte 1
Plaint
'Suitt 1 Pia 1
South n 1
Scutt! ratite Sbutls Rolla 1
&tali flatla 1
Scati f i
Six" Piro T
Smith Mfltt,'
m rHO 1
South Malta 2
.nub! Matte
Sault' PAWN 2
South ritana
tilatelh Nth, 2
%tiHp Rifle 7
Smith Pelle 2
304 INitte:i*
'JaOHtIila i
r1I11 Podolia 2
Puglia 111
5411111 F401111;
&uil! Kiltil 2
SAM :LSO ,
SCSI o LYN
Su11i1 Now law
South Mafia iLaaw
South Patio Lcat
Scurf, Pour, kow
5.411`_ Raw Law
Seat F3la AYa Loft
Stec Platte Low
S.r 1- PM, Lug
Eli' Platte Low
;lout PIS!. Lon'
6641ti Pis* Lae
.outElavatLisit
itrth ;PUMA OW
SouiwPiwiiM L4wf
;I Min
t320256
r12
I! 3227Sf
Taatraill
51iil
13285141
44328£,1]
'1~..42 116110
732 aVilti
T MOM
1326740
532978+9
13z'El
1375781
1361
4.125,2
102$610
1F1
Ii
0
ia234 841
.132348e
131111
1.141W0
140!0
130102D
1321132G
139110
13-1110X.
131,icit
13t190
0157155
1)151*t
Ili.
I'i
40yr
later
SI
1
1afr
10Itpr
P EH FT
Sflar
Virg
rig
'PLCp
flip
bllyt
Tinlptt
5000
tar
5110
Oiler
Otifl'r
mit
RI"
°air
UIa111r*
eovr
-prop
Wit
1134
'Iyr
ter
Wfr
i 111
QTR
1*1
IWO OD
@i mT
12500 rat
51400D
1 't0O0 or
Moe on
stifle ar
Tap° co
356U 00'
10000 a]
24Wt! rtiri
3lrifl
67800 03
11000.03;
a4tion Wit
12700 01.1
rt V►tjlltl Off
J5 r�Ql
MAO 00
2.4400
...Mgt I 1
!finer
'5n,l
g how
a50?5 CA
mu? gt
atirtti 35
16444 00
48817 52
6ttltlnu
10047.81
-21;qta 2t5
,10*1J
4081 �° 2
timaj
2 4.500
intriao
5701'1,
11000.00
2.•41100 OD
.%rt.'
2
7Sil(l r r
town, 1 i
241100
6814
small ne
Ili$�`1 COY'El
±fl3.' rc
4631.70
06517G
4O 1 r0
4 911
4Ill»n
IN, 90
4620'0
Siam OD
°410 kAtil
48Th 00
4026 oa
4020.00
4628.00
4828.00+
4011.07
404 2.
ira
4&24 sue?
hG4 2.
4f22 H?
4809 it?
4n 62
41. 4
A'S Sm'
18'1
4839. i'e
•1111111 01.1
4M1 4)
INT tie
4536 91
-1}36
4630 07
4640. I d
.4 ii 4.
4.0:1 4!1
46°:4 JG
4637.05
010 nti
4634 2,r
4i An 1g
traLA 111
4.
skpaab
4t''nit dhotiI +
4 / 05 OfEl 5tH
4822 115 r
460 Qi e
4P ti 50 CS'ES
4,47- 1OO' 4d23
top till 'Ili `i'
adial 4631St
10,3:- 44l.ea
*11922
*T0G 22 shill Sri
6516122 4831 SD
At if IX 404 II
46 Ia rnr 4 0tSf
01118 CF 46?7 32
451,4 r,. 41131 14
461/.81 4623.81
411!
461T.: tl ,ih; E,► 1$
461.711 40e r
4n 1 °a. I1 •1O Eo4
4014 ir ;1071 Ftfi
4015. Id 4c:2 tlik1
41113 1 4tr 2 11'ii
4609.61 49143 67
4008.81 AO? 7p
4609.61 4616:10
4609'.01 + 1 10. I% 9 011
4603.70 4610.34
4463 :HI
403 t'Q 4614.3
48113 FBI 4616.80)
,iru.ti ITti iattl 'r
alai DO 4817 55
4IIC0r 00 i$11.1 (0
41811' Tin MI5 3]
cait w
IDP
AGE.
4 7.P
4R" 99
4010.20
AC III
4634.61
dor ti
462D bli
4020
483021Th
4021 $.a
462wea
4.010 'I i
•4x.00
to
*rest
1012'40i
472'1
160 lE
i&0-11
47�
el 061*
MUM 41
4008111
aolel.38 it
16NT 3ei
I'eI
4639.41
4642.21
nu rj
4837. i'J
4t3 HO
4639. t,4441,
41.31
4635.
4♦i€1+5 Dr
4r47 it I
JICA-20
4633.7'1
4514 1?.
404 tit
01142
417314 ,1
41113 ad.
E 13 Shit
0i11) 0,101
O LOllit;8
u 00'r ttiif1
[.4&1'000
r re u; n l
O [08866
O 00140:i
1J (Ain iila
0.000189
1OCCon6
1,1. 4429421
tl 41113
D INJ116.3
0.001411
rJ 0 iO.7_43
19 2S 2'1! 'i')O1 "7
4'sa' OS fl ?�1itM o
meal 3a it °tr7
4533. 10 0:0033 I_I,
006519'' nulllnt
doze 59 vim !J1j
4epu uM'Ol 112
417;1 t rim 0.001x459
482521 rr cmnt I
-027,,iii to I I{
4146 J$' 0.1100.1 -fir
3T1, 0 l
ii 5 Jt. atom
sd2'r " n001
4 11s ww.NOL140
4623.E 0 n
trte-' WA L7' Uristrir2
4 50 0mans I
Ito) 20. ii Mcfi
lugo m ratogrris
Co H4 0135103 I
7 ''31'a'911liit5%
.22 0061000
48318.80 a-00a24l.t
iL o 7' 1 a ] 001467.'
4618.35 0.001439
4619.82 J ICbi
IWO 620 0 WOAD
461305 semen
4614.61 0130:104:1"
ti 1 1.' i) WSW
4H10 82 0 001622
4011 t 8.02050k1
Awl. en fi fir
4616.81 11. III It1
tnr
e
44$ii
Val GPO *ttv Alas
2897.
.422 ae
5,610
,
1(67 1M
44109. 1?
4.31 `117i'914
.9. 'tug 'IOW
*84 -10411404
6,58
10472 h3DQ711
f 438 vi
18881.21
0.81
r
7.I
5 PH
g In
10.21
11}, U)
Ilfi
ttr
r, t? J
4 .'t1
145
30-6
251
3.71
4r
6,'+0
tt
4 Oti-
,
Li
72?
HS
7421 4?
70673 95
3977A IS
12473.61
1flEr�r
asps 4Q
4411 I�
?Hirt 05
4:+17313
4921.14
raou
24IT.yip
1502-05
37'97.91
X01
3776.61
8310.81
rrra6,.I+j'
;ran,i'
I? - r ":.r,
'hit*
76140 e7
WS ill
ItEtickh
IIQ't11ti
A 77 15
4i1- .r it 2ir
241A w►w 4 .n
2.51,0 a,' 041
27'4$ 39 II 55
0#1.5 ;is
445411, !94
4915.01
--0112.E.
!r.14 ' (It.
24r,I, Nh
111,94 D4,
4fl1 00
..174(11.23 •
6568:191I
s e5 L,'. 00
4485.97
'2O s 1 I)
X52• till
' nu
1_577 54
Vitt Imo..
Ili UT
;ass '1
7aix2
27T: 1).;
34�l7I T4.
38'9
3984.1Q
42411
fl71't 173 .100-1$113
113
0 a 3992;14.
1'to0fri! 43 14
08!0 73 4037.61
Oa: 12 45,r2 y'' Crafit 'UB4 91 004+0 P-9
ti. 0.44 0..40114--1
3.60 •5'2.x' ir4 (IWI r w
4 0075 Eh
13340116. !VP Rh
4.61 -2:015 Slit 6685.14
5 fit,- 30114, 'S 1101 tf
5 34 11,611.114
A-414. 18120 la 02.3 *11
5 , ar691' 17!r<i 5442 !
� 2ain
7340.06
9021.70
18
150.85
50.86
136-
23914
2594 t.5
044
4n
0(34
0.471
0,41
0'.!'
I� t.4
0.
-
0."
0.34
rt
0,41
0E
a IS
Jt1
0.40
[1.3']
, I is
0 �4
0.28
t
0.1 E
0 IS
0 a6
rr.1
0.31
ci41Id1
rO.I�
41
Iry 1�i
0r't
0445
0 60
nr14
0 3A'
0 AP
IJi42
IYn
P H
0 his
to 2f�
2`fi
620
02a
NEC-RAS Pia OEM leortint.wx111
Riau Mow Ste
Rale 0 Total
4als1
Nth ChB 4'4' S E1ika
rite 't'
South Plana law 131545'iB5i 14y?r
South Pate Low 1315505 50yTt'
South PWd1n las 1315595 _100)0
Stith Paab Low 1316585 •5O1yT
South Plane Low 1316406
_ 1100300
24iX10 00
31000
5'I OW CO
South PMttw Low 1315345 10yi
South Ping Low 131133$5
W1 Nate Low 13iS3&5 100yr
South Malta Lora 13^163.65 SCOyt
Smith Patih Love 1314350 _ ityt
South Rya LIN, 1314350 50 r
South PaLIH Low 1314350 1 yi
South Pula Low 1314350 SONr
South Ftstiw lAtw 1312205 10y?t
South Pti a Low 1313200 r
South Plana Low 1313200 103y1
South Faun Low 13132W SONtr
South Pia Low 131044} 1oyr
South Platte Lotto 1:3106 30 SCD,T
5ouh1 Ptthu Lew 1310630' 101331
South Mtn), Low 131130 sir
South Ratio Low _'13.00 10y+r
South PSdIx Low 1
south KM o• Low .1M8300 10+.3y+r
South NMI" Lcm 1 ,}1) 5 6rywr
South %M. Low 1 57 1 fr
south Piths Lis 130101257 SIDyt
South Pia Lovw 120025? 1co
south plaits Low 1-1,3257 X71
South K OS LOA' 12C63,71 10yt
-South: Platte' La® 12953371 9N
st.,thrhtte Lthw 12%311 11Vyr
South Piano Lot 129&371 :5C0yr
South piths vim 1287224 it:Jr
South Malta Law 12$2 2211 50y1r
South Pwie Low 1211~72211 1114•
-auth Plata .WS 1267229Kett
South Path Low 12'75i)R0 h3yr
South Pails law 127170 ,
South Pititnetaiw 1279000 100yTr
South Hutto Lem! 12791380 600yr
South Plaiio 1267580 10'r
55511!8 Pti41H 4Mw 120711.00 :51 yrr
South Tito UM .12571580 1 Miff
South ' ln'LOW 1267000
South Pta lu (.tr_w 1257O14 ter
South: Matte Low 1257914 50r
Snout ilitn$ tc,w 1257914 19(y,
South Platla .?.off 1257914 5005u
South Prhtle tow 1242443 1031
South Nitro i.Ow 1242443
south P1*11k Lam' 1242443 10or
south Plana .Low 1242443 5COso
Smith Kist!, Low 1240000 10yt
South Ptatia Low 1241'000 EC r
South Mafia Low 1240000 100!1+1
South Plebe Low 1240000 50954
South Plallo Low 12301123
Smith Platte Low
soar, i'1u nw t
South PIS Low
1'23117
T230847
1339847
afilea
110(0 00
2.4300 CO
31003 CO
51003 CO
1100(11:0
2 00
31000 `y 00
51000 OD
11930 00
24000 CO
31.3 CO
51003 CO
11010 00
4000 .CO
31000 CO
Stumm
1431000
.315 7 CO
41900 CO
7:3 00
1431038
31550 CO
41800 00
Maga00
1r41i101:0
31;593 00
41600,00
7380000
1131000
31550 CO
41'4301 CO
5131303 Ct
1aloo0}
31 1'
41'1500 CO
73.00
14310 CO
31%000
4100000
:IlitCO 00
140.00_
31630.00
41#,08
73= 0D
14310.01}
31550_00
41600.00
73800.00
14410 00
31650 (141
4100
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APPENIDIXG
Model Input and Results
APPENDIX G.1
Existing Conditions Model Input
Subcatchment
(SUB) ID
Receiving
Node ID
Subcatch.
Imperviousness
061
Subcatchment
Width {ft)
Subcatchment
Slope (%)
,
Manning's
N for
Pervious
Portion
Subcatchmnent
Area (Acre)
M4anning's
N for
Imperv.
Portion
Depression
Stor. for
Imp.
Portion (in}
Depression
Star. for
Perv. Portion
{in]
% of
Imperv.
Part wrjo
Dep. Star.
1
JCT-34
866.0
3.00
586
1.42
0.013.
0.0€
0.1
0-4
1
2
JCT-35
297.8
3.00
213
1.27
0.013
0.0€
o 0,1
0.4
1
3
5TOR-1500
526.1
3.00
379
1.44
0.013
0,06
0.1
0.4
1
4
5TO(t-1500
213.2
3.00
522
1.02
0.013
0,06
0.1
0.4
1
5
JCT-38
662.1
3.00
1228
1.60
0.013
0.06
0.1
0.4
1
6
.ACT -101
497.5
3,00
367
1.13
0.013
4106
0.1
0.4
1
7
JCT-99
276.8
3.00
206
0.92
0.013
0.06
0.1
0.4
1
8
,JCT-93
80,9
38.86
308
1.17
0.013
0.06
0.1
0.4
1
9
JCT-96
451.3
3.00
874
0.83
0.013
0.06
0.1
04
1
10
JCT-40
412.9
3.00
925
1.38
0.013
0.06
0.1
0.14
o 1
11
4 CT -106
356.2
3.00
1186
0.90.
0.013
0.06
0.1
0.4
1
12
J CT -143
270.5
3.00
979
1.56
0.013
0.06
0.1
0.4
1
13
SUB -32A
240.5
16.93
654
1.75
0.013
0.15
0.1
0.4
1
14
JCT-113
399.4
3.00
465
1.24
0.013
0.06
0.1
0.4
1
15
SUB -17
48.0
3.00
445
1.54
' I
0.013
0.06
0.1
0.4
1
16
JCT-10$
489.2
3.00
573
1.65
4.013
0.06
0.1
0.4
1
17
Ja-109
160.1 I
3.00
1288
1.07
0.013
0.06
01
0.4
1
18
SUB -19
181.1
3.00
182
1.62
0.013
0.06
0.1
0.4
1
19
JCT-109
218.5
3.00
1130
0.85
0.013
0.06
0.1
0.4
1
20
SUB -22
35.1
3.00
141
0.99
0.013
0.06
0.1
0.4
1
21
Jai' -110
188.8
3.00
1215
0.76
0.013
0.06
0.1
0.4
1
22
164.0
3.00
812
1.00
•
0.013
0.06
0.1
0.4
1
JCT-110
23
JCr-28
458.4
3.00
921
4,26
0.013
0.05
0.1
0.4
1
24
5UB-44
193.0
3.00
478
1.03
0.013
0.06
0.1
0.4
1
25
OFALL-50
36.0
3.00
112
1.14
0.013
0.06
0.1
0.4
1
26
JCT-100
285.6
3.00
1186
2.31
0.013
0.06
0.1
0.4
1
27
is -1$
21.6
3,00
252
3.76
0.013
0.15
0.1
0.4
1
28
137.8
20.69
756
3.02
0.013
0.15
0.1
0.4
1
1CT-20
29
JCT-44
114.6
50.45
462
2.80
0.013
0.06
0.1
0.4
1
30
113.0
12.33
404
2.18
0.013
0.06
0.1
0.4
1
JCT-42
31
693
3.00
724
1.34
0.013 I
0.06
0.1
0.4
1
.ACT -105
32A
275.3
9,63
1363
1.44
0.013
0.06
0.1
0.6
1
JCT-131
323
5TOR-1900
68.1
6.00
420
1.34
0.013
0.06
0.1
0.4
1
33
J CT -111
46.5
3.00
306
1.19
0.013
0.06
0.1
0.4
1
34
J CT -211
27.2
3.00
302
2.54
0.013
0.06
0.1
0,4
1
35
JC -171
264.3
3.00
1138
1.76
0.013
0.06
0.1
0.4
1
36
141.5
3.00
400
5.28
0.013
0.06
0.1
0.4
1
JCT-112B
37
86.9
3.00
403
4.85
0.013
0.15
0.1
04
1
JCT-46
38
JC-T-23
187.0
3.00
11€4
3.64
0.013
0.15
0.1
0.4
1
39A
JCT-24
364.5
50.00
181
°
6.66
0.013
0.06
0.1
0.4
1
398
JCT-25
130.2
3.00
394
;"
2.73
'
0.013
0.06
0.1
0.4
1
40
JOT -26
9.2
3.00 II
1488
3.96
0.013
0.06
0-1
0.4
1
41
JCT-10
38.5
3.00
851
1.69
0.013
0.06
0.1
0,4
1
42
„ICT-311
336.6
3.00
898
2.55
0.013
0.06
0.1
0,4
1
43
121.0
3.00
359
2.85
0.013
0.06
0.1
0.4
1
JCT-11
44
JCT-13
191,9
3.00
885
2.60
0.013
0.06
0.1
0.4
1
45
63.3
3.00
903
2.31
0.013
0.06
0.1
0,4
1
JCT-14
46
JCT-32
273.8
25.07
1103
2.37
0.013
0.06
0,1
0.4
1
47
STOP -700
232.7
3.00
519
2.58
0.013
0.06
0.1
0.4
1
48
la -22
256.7
3.00
1529
1.69
0.013
0.06
0.1
0.4
9 1
49
JCT-209
68.5
3.00 i
1295
1.47
0.013
0.0€
0.1
0.4
1
50
.CT -7
459.7
3.00
294
3.31
0.013
0,06
0.1
0.4
1
51
JC1-8
400.8
3.00
703
2.67
h
0.013
0.06
0.1
0.4
1
52
.ICT-67
65.6 ;`
3.00
869
2.99
0.013
0.06
0.1
0.4
1
53
.)CT -11
206.2
3.00
1011
2.81
0.013
0.06
0.1
0.4
1
54
SUB -55
241.8
3.00
566
1,28
0.013
0.06
0.1
0.4
1
55
J)CT-71
157.0
3,00
1409
1.69
0.013
0.06
0.1
0.4
1
56
JCI-121
128.9
3.00
1190
2.75
0.013
0.05
0.1
0.4
1
57
JCT-12$
434.6
3,00
196
4.01
0.013
0.06
0.1
0.4
1
$8
JET -129
354.9
3010
320
0.95
0.013
0.06
0.1
04
1
59
JCT-5
9.1
3.00
831
3.03
0.013
0.06
0.1
0.4
1
60
5TOR-2100
32.1
3.00
208
2.62
0.013
0.06
0.1
0.4
1
61
STOR-2300
507,7
3.00
56
4.04
0.013
0.06
0.1
0.4
1
62
STOR-22OO
50.4
3.00
83
1.81
0.013
0.06
0.1
0.4
1
63
0.9
3.00
27 I
2.42
0.013
0.06
0.1
0.4
1
JCT-203
64
JCT-201
13.4
3.00
81
1.28
0,013
0,06
0.1
0.4
1
65
JCI-212
5.9
3.00
135
1.40
0.013
0.06
0.1
0.4
1
P;\2015\0151255,00 -Weld County Master Drain Plan\Drainage\Calculations\4-26Existing Conditions Model lnput.xlsx
1/12
•
5ubc atohment
(5u8) ID
Receiving
Node 10 j..........2L!a
Subcatchment
(Acre)
Suboat}ch.
Imperviousness
(%)
Suteratchment
width
(ft}
Subcatchtnent
Slope II%)
i
Manning's
N for
Irnperv.
Portion
Manning's
N for
Per' sous
Portion
1
Depression
Star. for
Imp.
Portion (in)
Depression
Star.
Pent.
(in)
far
Portion
% of
Imperv.
Part w'a
Dep. Star.
SUB -67
75.0
0.87
0.013
0.06
0.1
0.4
1
66A
16.85
232
668
STOR-1800
610.0
3.00
452
1.01
0.013
0.0E
0.1
0.4
1
66C
5TOR-1800
734.1
4.21
796
2,87
0.013
0.06
0.1
0.4
1
67
JCT-124
25.3
3.00
667
0.61
0.013
0.06
0.1
0.4
1
68
JCT-117
39.0
3.00
1029
0.62
0.013
0.06
0.1
0.4
1
69
JCT-118
39.7
3.00
398
0.86
0.013
0.06
0.1
0.4
1
70
JCT-126B
73.9
3.00
594
0.60
0.013
0,06
0.1
0.4
1
71
OFALL-30
49.8
3.00
734
0.54
0.013
0.06
0.1
0.4
1
72
SUB -73
117.5
26.14
122
2.17
0.013
0.06
0.1
0.4
1
73
5T0R-1600
176.0
18.39
467
1.56
0.013
0.06
0.1
0.4
1
74
JCT-116
22.8
3.00
950
1.01
0.013
0.06
0.1
0A
1
75
SUB -76
56.7
° 3.00
178
1.62
0.013
0.06
0.1
0.4
1
76
.CT -126
105.8
3.00
837
0.67
0.013
0.06
0,1
0.4
1
77
,JCi-78
47.1
3.00
609
1.79
0.013
0.06
0.1
0.4
1
78
SUB -77
173.8
3.00
196
0.95
0.013
0.06
0.1
0,4
1
79
STOR-1700
111.1
3.00
729
0.77
0.013
0.06
0.1
0.4
1
80
STOR-300
31.0
15.66
1626
1.05
0.013
0.06
0.1
0.4
1
81A
JCT-568
4.9
3.00
630
1.06
0.013
0.06
0.1
0.4
1
818
STOR-10030
463,4
3.00
428
1.13
0.013
0.06
0.1
0.4
1
82
JCIF-62
166.4
3.00
746
1.14
0.013
0.06
0.1
0.4
1
83
OFALL-140
9283
3.00
1339
0.76
0.013
0.06
0.1
0.4
1
84
SUB -85
317.9
3.00
119
0.97
0.013
0.06
0.1
0.4
1
85
STOl R-400
642.6
3.00
218
1.00
0.013
0.06
0.1
0.4
1
86
STOR-200
413.1
3.00
661
1.60
0.013
0.06
0.1
0.4
1
87
$TOR -x,40
196.6
3.00
156
3.29
0.013
0.06
0.1
0.4
1
884
STOR-600
377.0
3.00
170
3.43
0.013
0.06
0.1
0.4
1
888
JCT-86
510.4
3.00
356
3.54
0.013
0.06
0.1
0.4
1
89
JCT-47
43.6
3.00
418
1.65
0.013
0.06
0.1
0.4
1
90
JCT-48
167.8
3.00
223
1.65
0.013
0.06
0.1
0.4
1
91
JCT-77
328.2
3.00
761
1.95
! 0.013
0.06
0.1
0.4
1
92
SUB -91
198.8
3.00
47
2,60
0.013
0.06
0.1
0.4
1
93
JCT-51
201.1
3.00
1325
3.21
0.013
0.06
0.1
0.4
1
94,E
JCT-80
122.2
3.00
817
3.30
0.013
0.15
0.1
0.4
1
94B
I JCT-172
237.6
3.00
179
4.60
0.013
0.06
0.1
0.4
1
95
5U 8 -88B
99.7
12.08
1323
3.19
0.013
0.15
0.1
0.4
1
96
OFALL-6,0
10.6 I
3.00
383
3.20
*
0.013
0.06
0.1
0.4 I
1
97
Jar -73
7,9
3.00
588
3.41
0.013
0.06
0A
0.4
1
98
5TOR-1100
64.6
3.00
139
3.44
0.013
0.06
0.1
0.4
1
99
OFALL-70
763.5
3.00
242
2.32
0.013
-
f 1
0A
1
P:\2015\0151255,00 - Weld County Master Drain Plan\Drainage\Calculations' 4-26Existing Conditions Model Input.xisx 2/12
Existing Conditions Model Input- Conduit
Conduit
ID
LENGTH
(ft)
Manning's
N
SHAP E JVP'E:
Max
Depth (ft)
GEOM2
(ft)
Number
of Barrels
1
10,250
4,849
0.0563
0.0563 t
250
500
3: Red -Open
3
1
2
3
4
3: Recd -Open
6
1
3: Red -Open
0,0563
3
1,511
500
1
3,460
4,693
4,693
0.0563
3: Red -Open
3
450
1
0.0563
5
3: Rect-O pen
3
500
1
6
3
0.0563
3: Red -Open
350
1
4,000
0.0563
7
3: Red
-Open
350
3
1
7B
4,000
0.0563
3: Red -Open
3
1
350
3:
Red -Open
8
3,596
0.0563
3
350
1
9
13,596
0.0563
3: Rect-Open
3
350
1
1
1
1
2,587
0.0563
3: Red -Open
10
5
500
11
2,271
2,847
3,091
0.0563
3: Red -Open
500
5
12
0.0563
3: Rent -Open
5
1
500
13
0,0563
3: Red -Open
5
500
1
14
2,475
3: Rect-Open
5
500
0,0563
1
15
3,342
0.0563
3: Red -Open
5
500
1
16
3,342
0,0563
3: Red -Open
5
500
1
17
3,900
3: Red -Open
1
0.0563
6.5
120
3: Red -Open
12
1
18
7,675
0.0563
140
19
884
0.0563
0.0563
0.0563
3: Red -Open
120
1
8
1,327
3: Recd -Open
20
6
150
1
21
1,086
3: Recd
-Open
150
6
1
22
1,835
0.0563
3: Recd -Open
6
150
1
2,783
23
0.0563
3: Red -Open
6
100
1
24
1,681
0.0563
3: Red -Open
6
120
1
25
1,238
0.0563
3: Red -Open
6
120
1
229
0.0563
3: Red -Open
6
120
26
1
27
826
0.0563
3: Red -Open
1
1
1
6
120
4,477
0.125
3: Red -Open
6
120
28
29
0.125
7,286
5: Triangular
3
50
30
2,398
0.125
5: Triangular
3
50
1
2,209
0.125
31
5:
Triangular
4
60
1
32
1,865
' 0.125
5: Triangular
5.5
130
1
33
1,775
160
1
0.125
3: Red
-Open
5
0.0563
5: Triangular
34
3,317
0.3
35
1
2,690
35
0.0563
5: Triangular
3
120
1
2,215
0.0563
5: Triangular
36
5
175
1
37
2,964
5: Triangular
350
1
0.0563
6.5
38
3,595
0.0563
5: Triangular
43
250
1
39
4,082
5: Triangular
5
0.0563
320
1
40
4,422
0.0563
5: Triangular
7
225
1
41
2,396
0.0563
5: Triangular
6 I
350
1
P:\2015\0151255.00 - Weld County Master Drain Plan\Drainage\Calculations\4-26Existing Conditions Model
Input.xlsx 3/12
Existing conditions Model Input . Conduit
Conduit
ID
LENGTH
(ft)
42
43
44
45
46
47
48
49
50
50B
51
55
57
59
61
64
65
66
67
68
70
71
72
73
74
75
76
77
78
78B
79A
80
81
82
83
85
86
87
88
89
90
91
1,762
1,689
2,339
766
41
3,880
1,172
1496
592
2,553
1,280
2,012
1,316
3,745
2,719
1,452
1,677
3,142
Mannin 's
544
3,1.42
2,637
56
662
2,623
756
483
1,159
2,286
2,007
242
122
659
424
2,973
1,501
215
909
849
1,256
0.0563
0.0163
0.0563
0,0563
0.0163
0.0375
0.0375
0.0375
0.0375
0.0375
0,0375
0.075
0.0375
0.075
0.075
0.0563
0.0563
0.0375
0.0375
0.0375
0,0563
0.0163
N
0.0563
0.0563
0.0563
0.0375
0.0375
0.075
0.075
0.075
0.0163
0.0375
0+0375
0.075
0.075
0.0163
0.075
0.075
0.0375
1,256 I 0.0375
0.075
1,441 I 0.075
3,104
SHAPE TYPE
5: Triangular
13: Mod -Basket -Handle
3: Rectapen
3: Reect-Open
4: Trapezoidal
3: Rect-Open
3: Rect-Open
3: Rect-Open
per
3: Rect-Open
3: Rect-Open
3: Rect-Open
3: Rect-Open
3: Rect-Open
5: Triangular
3: Rect-Open
5: Triangular
3: Rect-Open
5: Triangular
3: Rect-Open
3: Rect-Open
5: Triangular
0: Circular
3: Rect-O pe n
5: Triangular
3: Rect-Open
3: Rect-Open
3: Rect-Open
5: Triangular
5: Triangular
3: Rea -Open
1: Filled Circular
3: Rect-Open
3: Rect-Open
5: Triangular
3: Rect-Open
2: Rect-Closed
5: Triangular
5: Triangular
5: Triangular
5: Triangular
3: Rect-Open
3: Rect-Open
Max
Depth (ft)
8.5
8
6
0.5
3
3
2
1.5
2
1
1
1.5
0.3
0.5
0.75
4
5
0.5
2.5
2
03
3
2
2
10
3
3
1.25
1
1
1.5
2.5
0.5
1
0.4
8
1
1.5
1
GEOM2
(ft)
280
20
120
200
25
200
200
200
600
800
275
300
20
400
800
80
300
100
100
200
100
0
100
250
200
450
450
650
500
150
0.5
400
400
325
400
0.5
600
400
70
150
900
600
Number
of Barrels
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
P:\201.5\0151255.00 - Weld County Master Drain PIan\Drainage\Calculations\4-26Cxisting Conditions Model
Input.xlsx 4/12
Existing Conditions Model Input - Conduit
Conduit
ID
LENGTH
(ft)
I
SHAPE TYPE
Max
Depth (ft)
Number
of Barrels
M anningTs
N
GEOM2
(.ft)
5: Triangular
500
700
650
500
300
280
1
92
1,313
' 0.075
0.6
1
93
94
95
3: Rent
-Open
I
2
2,674
0.075
5: Triangular
1
2,727
0.075
2,5
1
1
1
5: Triangular
2,449
25
0.075
5: Triangular
96
995
0.075
10
97
98
99
100
101
6
830
5: Triangular
0.075
1
5: Triangular
475
1,613
0.075
1.2
3: Rect-Open
1
3,183
5
375
0.075
1
5: Triangular
850
4,147
4
0.075
5: Triangular
1
3.5
3,468
0.075
125
140
60
550
700
700
800
500
700
150
175
5: Triangular
1
4.3
102
1,933
0.075
1
103
1,020
5
0.0563
5: Triangular
1
5: Triangular
1
104
1,439
0.075
1
1,989
5: Triangular
2
105
0.075
106
4,169
0.075
3: Rect-Open
0.5
1
1
0.8
107
108
109
3: Rect-Open
2,808
0.075
5: Triangular
1
1,785
0.075
1.5
1
3,745
5: Triangular
15
0.075
1
3: Rent -Open
110
0.0025
2
2,055
1
110B
3,541
3: Rect-Open
2
0.0625
1
5: Triangular
1,000.00
0.075
0,3
111
I 5,160
112
0,5
1
5,160
5: Triangular
700
600
700
0.075
5: Triangular
1
2.5
113A
2,684 ,
0.075
1
113B
5: Triangular
2.5
3,896
2,327
1,061
492
358
0.075
5: Triangular
300
1
1
114
0.075
115
1
I 1.5
600
300
140
650
650
750
700
0,075
5: Triangular
1
3: Rea -Open
0.5 I
0,0375
116
1
117
5: Triangular
2
0.0438
1
5: Triangular
2
118
2,954
0.0438
1
119
2,954
5: Triangular
2
0.0438
5: Triangular
1
1.5
120
1,931
0.075
1
5: Triangular
121
2,404
1.5
0.075
800
1
122
3: Rect-Open
0.5
1,495
0.075
1
3: Rect-Open
05
1,347
122B
0.075
800
1,200
300
3: Rect-Open
1
1
123
2,615
0.075
1
3: Rect-Q per
1
124
1,415
0.O438
6: Ellipse-Horiz
6333
1
4
126
125
0.0163
127
1,339
3: Rect-Open
5
100
1
0.0625
1
1.5
5: Triangular
300
128
3,907
0.0563
1
3: Rect-Open
250
400
10
3
150
0.075
0: Circular
1
1.5
151
45
0,03
1
3: Rect-Open
316
1
152
0.0375
P: ,2015\0151255.00 - Weld County Master Drain Plan,Drainage\Calculations\4-25Existing Conditions Model
Input.xtsx 5/12
E: i sting Conditions Model Input- Conduit
Conduit
ID
LENGTH
ft)
Max
Depth
(ft)
GEOMZ
(ft)
Number
of Barrels
Mannin :'s
N
SHAPEETYPE
0.0163
0.0375
0,0163
0.0163
0.0163
0.075
0.075
0.0563
0.03
0.0163
0.0163
0.0163
0.0163
0.0163
0.0163
0.0163
0.075
0.075
0.0563
0.125
2.2
1.6
80
200
40
6: Ellipseal-loriz
1
154
238
120
145
1
3: Pect-Open
1
1
1
155
156
160
161
162
163
I
173
2
0: Circular
2
0: Circular
57
0: Circular
2
1
0.75
1,356
1,614
1,047
5: Triangular
1
5: Triangular
1
600
1
5
5: Triangular
110
0
0
0
0
0
18
0
400
200
X60
65
60
100
125
3.833
300
120
500
50
100
1
47
1
174
1.5
0: Circular
2
1
200
115
0: Circular
117
2.5
201
0: Circular
1
2
183
221
120
161
100
1,111
973
454
39
202
0: Circular
1
1.5
203
0: Circular
1
1.5
1
204
0: Circular
8
2: Rect-Closed
, 1
205
207 I
208
209
0: Circular
2.5
1
5: Triangular
1.4
1
0.3
1
5: Triangular
5: Triangular
1
210
1
3.5
211
212
213
5: Triangular
1
0.125
5: Triangular
3.5
35
1
518
0.125
0.0563
0.0163
1
2
2
1
3: Rect-Open
1,105
5: Triangular
215
1
50
229
0: Circular
2
4
1
230
0.0163
75
6: Ellipse-Horiz
2.417
2
10
0.0375
3: Rect-Open
231
232
233
234
235
70
0.03
4
0: Circular
1
3,629
6
3: Rect-Open
1
0.0563
146
0: Circular
2
0.0163
1
03
797
I 1
0.0375
0.0375
0.03
3: Rect-Open
50
11
236
3: Rect-Open
1
2
237
94
1
0: Circular
1 109
0.0563
238
3:
Rect-Open
1.5
1
P:\2015\0151255.00 - Weld County Master Drain Plan,Draina a\Calculations\4-26Existing Conditions Model
I n put.xisx 6/12
Existing Conditions Model 'Input- Storage
Conductivity
(in/hr)
Storage ID
Invert Elevation
(ft)
Maximum
Depth
(ft)
100
4,621.00
I 7
0.5
200
4,634.00
2
0.1
300
4,629.00
4
0.1
400
4,641.00
1
0.1
500
4,631.00
5
0.1
600
4,631.00
4
0.1
700
4,621.00
3
0.1
800
4,611.00
11
0,5
900
4,634.00
3
0.1
1000
4,633.50
1
03
1100
4,760.03
2
0.3
1200
4,640.00
2.5
0.1
1300
4,676.50
4.5
0.1
1400
4,612
50
2
0.1
1500
4,694.00
4
03
1600
4,625.68
4
0.3
1700
4,638,00
1
0.1
1800
4,624.00
1
03
1900
4,637.00
2
03
2000
4,632.74
3
0.5
2100
4,621.00
245
0.3
2200
4,621.00
2
0.3
2300
4,6
0.50
23
0.3
P \2015\0151255.00 - Weld County Master Drain Plan\Drainage\Calculations\4-26Existing Conditions Model
Inp►ut.xlsx 7/12
LUU
4OO
800
Existing Conditions Model input # Weir
:.Transverse
k ti Tanme`ri'tT5t:
0: Transverse
t?. i Triritriit.T"iC
04. TT BriactitTale
1 0: Transverse
.2
o
T
U.S. .1.) AAA.)0. 5 240
I L.J Fes'
0,4 1.65
Trap.
Weir Side
Slope
2Cn
x+.1'4
Weir Crest
Height (ft)
0.49
2.4
Coeft of
Discharge
E1
2.9
Ct
C-,-,
2.9
i
i
P.\2015\0151255.OO - Weld County Master Drain Plan\Drainage\Catculatiens' 4 26Existing Conditions Model
Input.xlsx 8/12
Existing Conditions Model Input 4. Junction
Junction ID
2
3
4
5
6
7
7B
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
37
38
39
40
41
42
43
44
Invert Elevation
4,638.03
4,623.02
4,620.69
4,616.72
4, 615.30
4, 609.04
4, 6O3.38
4, 6O2.14
4,599.13
4,599.02
4,596.94
4,594.29
4,591.71
4,590.00
4,586.62
4,58336
4,633.98
4,628.88
4,614.17
4,613.08
4,612.1O
4,610.50
4,606.03
4,604.14
4,603.00
4,6O2.74
4,597.54
4,635.03
4,618.7O
4,6O5.69
4,597A6
4,593.02
4,612.10
4,733.00
4,725.61
4,72O.92
4,711.78
4,700.29
4,689.24
4,674.62
4, 659.8O
4,64633
4,636.09
4,623.17
P:\2015\0151255.00 - Weld County Master Drain Plan\Drainage\Calculations\4-26€xisting Conditions Model
¶nput.xlsx 9/12
E cistin nc�it n Model
.Input Junction
JUnctIO ID
45
46
47
48
49
50
508
51
52
56
56B
62
66
67
71
72
73
75
76
76B
77
78
79
80
81
84
84B
85
86
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
Invert Elevation (ft)
4,619.44
4,609.60
4,649.90
4,645.79
4,643,00
4,639.11
4,638,75
47637.00
4,633.75
4,634.00
4,633.00
4,626.88
4,605.74
4,604.09
4,586.00
4,582.59
4,70711
4,675.86
4,668.31
4,667.99
4,642.97
4,623.16
4,620.71
4,701.53
4,663.90
4,633.20
4,63030
4,629,98
4,625.94
4,637.00
4,636.01
4,635.16
4,617.77
4,697.35
4,685.20
4,679.82
4,674.79
4,665.80
4,662.81
4,652.02
4,688.15
4,638.05
4,707,97
4,690.99
P:\2015\0151255.00 - Weld County Master Drain Plan\Draina a\Ca1cula ions\4`26Exis ing Conditions Model
Input.xlsx 10/12
Existing Conditions Model In`t - Junction
Junction ID
103
104
105
106
107
108
109
110
111
112
112B
113
114
115
116
117
118
119
120
121
122
123
124
125
126
126B
127
128
129
131
132
135
160
162
163
165
171
172
173
174
175
176
179
186
Invert Elevation (ft)
4,665.99
4,652.14
4,649.99
4,663.99
4,659.66
4,658.98
4,645.97
4,639.80
4,634.89
4,613.00
4,607.65
4,654.87
4,641.93
4,625.20
4,62146
4)621.01
4,617.28
4,616,39
4,592.55
4,589.89
4,585.00
4,624.90
4,621.38
4,61914
4,62133
4,617.42
4,616.34
4,584.85
4,605.98
4,633.67
4,631.40
4,758,90
4,602.00
4,610.00
4,630,02
4,628.00
4,631.00
4,631.84
4,631.44
4,632.24
4,641.00
4,630.72
4,626.00
4,619.00
P:' 2015\0151255.00 -' Weld County Master Drain Plan\(rainage\CaIcutations\4-26Existing Conditions Model
Input.xlsx 11/12
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