HomeMy WebLinkAbout981532.tiff P.
soil surveyof
Weld Coun tyColorado
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United States Department of Agriculture
Soil Conservation Service
in cooperation with
Colorado Agricultural Experiment Station
981532
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i' This map is compiled on 1974 aerial 10.000-toot grid ticks based on state
photography by the U.S.Department coordinate system. Land division
of Agriculture.Soil Conservation Service corners. If shown,are approximately
and cooperating agencies. Positioned.
• N 'h 0 1 2 Mile
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:.C40 4000 3000 2000 1000 0 Scale 1:24 000 5 000 Feet 10 000 Feet
fr91532
WELD COUNTY. COLORADO. SOUTHERN PART NO. 20
WELD COUNTY, COLORADO, SOUTHERN PART
125
TABLE 12.--ENGINEERING PROPERTIES AND CLASSIFICATIONS--Continued
Soil name and .Depth'
, USDA texture Classification ;Frag- ; Percentage passing
map symbol ments �i eve number-- Liquid Plas-
Unified AASHTO > 3 limit ticity
i - In inches 4 10 40 200 index
Pct
{ 14, 15, 16, 17 0-7 Loam CL-ML A-4
Colby 7-60 Silt loam, loam, CL-ML A-4 0 100 100 90-100 85-100 25-30 5-10
very fine sandy 0 100 100 90-77 00 85-100 25-30 5-10
loam.
78i,
Colby 0-7 Loam CL-ML A-4 0 100 100 90-100 85-100 25-30 5-10
7-60 Silt loam, loam, CL-ML A-4 0 100 - 100 90-100 85-100 25-30 5-10
very fine sandy
loam.
Adana 0-6 Loam ML A-4 0 100 100 90-100 70-90 20-30 NP-5
6-9 Clay, clay loam, CH, CL A-6, A-7 0 100 100 95-100 80-90 35-60 15-35
silty clay
loam.
9-60 Loam, silt loam, ML 90-100 75-90 20- 0 NP-
A-4 0 100 100 3 S
very fine sandy
loam.
19, 20 0-14 Clay loam CL-ML A-4 0 95-100 80-100 75-90 50-70 25-30 5-10
Colombo, 14-21 Clay loam, loam CL A-6 0
21-60 Stratified clay CL, CL-ML A-4, A-6 0-5 90-100 75-100 75-90 50-70 20-30 10-15
I loam to sand. 90-100 75-100 70-90 50-60 20-30 5-15
21, 22 0-12 Clay loam CL, A-6, A-4 0 85-100 75-100 75-95 70-80 20-40 5-20
Dacono CL-ML
12-21 Clay loam, clay, CL A-6, A-7 0 75-100 60-700 55-
gravelly clay 95 50-85 35-45 15-20
1 loam.
21-27 Sandy clay loam, CL, SC A-6 loam, silt 0 75-100 60-100 50-95 40_85 25-40 10-20
loam.
27-60 Very gravelly SP, GP A-1 0 35-80 5-50 5-40 0-5 --- NP
sand.
23, 24 0-7 Loam ICL-ML A-4 0 95-100 90-100 85-100 50-65 25-30 5-10
Fort Collins 7-11 Loam, clay loam ;CL A-6 0 95-100 90-100 85-95 60-75 25-40 15-25
11-60 Loam, fine sandy;CL, CL-ML A-4, A-6 0 95-100 90-100 80-95 50-75 25-35 5-15
loam.
•
25, 26 0-4 Loam IML, CL-ML A-4 0 95-100 80-100 75-90 50-60 20-30 NP-t0
Haverson 4-60 Stratified clay ;ML, CL-ML A-4 0 95-100 75-100 75-90 50-60 20-30 NP-10
loam to sand.
,. 27, 28 0-60 Silty clay ;CH, CL A_7 O
Heldt 95-100;95-700 95-100 75-95 45-55 25-35
E
29, 30 0-72;Santly loam SM, ML A-2, A_Al 0 '
Julesburg 12-271Fine sand loam, SN, ML A-2, A-4 0 95-100;75-100 50-85 25-55 -- NP
sandy loam. 95-700175-100 50-85 30-55 15-25 NP-5
27-60:Sandyloam, SM 95-100;75
loamy sand, AA- 0 -700 40-
q 85 15-50 -- NP
fine sand. A-1
'` 31 , 32, 33, 34 0-12'Loam ML, SM A_u '
Kim 12-40;Loam, clay Loam ,CL, CL-ML A_u 0-5 80-100;75-100 70-95 45-75 20-35 N5-5
40-60:Fine sandy Loam ;SM, ML A-4 ' A-6 0-5 30-100;75-100 70-95 60-85 25-40 P- 5
0-5 30-100 75-100 70-95 40-55 20-30 NP-5S
' 35*:
Loup 0-16:Loamy sand ISM A-2, 0 700 100 50-700 15-30 NP
16-60:Loamy sand, sand:SP-SM, SM A-2, A-3 0 100 100 65-700 5-20 --
NP
Boel 0-14:Loamy sand ISM A-2 0 700 100
14-60;Fine sand, loamy:SP, SM, A_2, A-3 0 100 100 95 '20-35 -- NP
, fine sand, ; SP-SM 85-95 ; 0-25 --- NP
364: coarse sand.
Midway 13 013:Weathered Clay ;CL, CH A-7 0 100 700 90-100;80-95 45_60 20-35
bedrock. --- --- --- --- ---
See footnote at end of table.
9(11532
WELD COUNTY, COLORADO, SOUTHERN PART 127
_.• TABLE 12.--ENGINEERING PROPERTIES AND CLASSIFICATIONS--Continued
Classification krag- : Percentage passing '-----r--
oil name and Depth: USDA texture manta I sieve number-- Liquid Plas-
map symbol Unified AASHTO > 3 i p. limit ticity
_ inches: 4 10 40 200 index
in Pct Pct
56, 57 0-9 Clay loam CL A-6 0 185-100 80-100 80-95 70-80 25-40 10-20
Renohill 9-32 Clay, clay loam CL, CH A-7, A-6 0 195-100 90-100 90-100 75-95 35-65 20-35
32 Weathered --- — _-- -__
bedrock.
58, 59 0-6 Loam CL-ML A-4 0-5 75-100 75-100 70-95 55-75 25-35 5-10
Shingle 6-18 Clay loam, loam CL A-6 0 75-100 75-100 65-100 50-80 30-40 10-20
18 Unweathered --- --- --- --- --- --- --- --- ---
bedrock.
60':
Shingle 0-6 Loam-----_____- CL-ML A-4 0-5 75-100 75-100 70-95 55-75 25-35 5-10
- 6-18 Clay loam, loam CL A-6 0 75-100 75-100 65-100 50-80 30-40 10-20
18 Unweathered --- --- --- --- --- --- --- --- ---
bedrock.
Renohill 0-9 Clay loam CL A-6 0 85-100 80-100 80-95 70-80 25-40 10-20
. 9-32 Clay, clay loam CL, CH A-7, A-6 0 95-100 90-100 90_100 75_95 35-65 20-35
_
32 Weathered --- --- ---
__ • bedrock.
61 0-11 Fine sandy loam ML, SM A-4 0 95-100 90-100 70-95 40-65 20-35 NP-5
[ Tassel 11 Unweathered --- --- --- --- --- --- --- -- ---
`F bedrock.
62, 63 0-6 Fine sandy loam SM, ML A-2, A-4, 0-5 75-100 75-100 70-90 30-60 -__ NP
Terry 6-18 Fine sandy loam, SM, ML A-4 0 75-100 75-100 70-85 40-60 --_ NP
sandy loam. 1 -_-
18-37 Fine sandy loam, SM A-2, A-4: 0-5 75-100 75-100 70-85 25-50 NP
sandy loam,
loamy fine
sand.
( 37 Weathered --- --- --- '-- -- --- --- ---
{F bedrock.
64, 65 0-8 Loam CL-ML A-4 ; 0-5 80-100 75-100 70-95 50-75 20-30 5-10
Thedalund
8-25 Clay loam, loam, CL-ML, A-6, A-4: 0-5 80-100 75-100 70-95 40-80 25-35 5-15
very fine sandy CL,
loam. SM-SC,
SC
25 Weathered --- --- I --- --- --- --- --- --- ---
bedrock.
Jd, 67 0-5 :Clay loam CL A-6 0-5 95-100 95-100 80-100 70-80 30-40 10-15
Ulm 5-19:Clay loam, clay CL A-6, A-7 0-5 75-100 75-100 75-100 60-80 35-45 20-30
19-60:Clay loam CL A-6 0-5 75-100 75-100 75-100 60-80 30-40 15-20
•
`. 7• 0-60:Variable -_- --- -- --- --- --- --- -__ -_-
Jstic
To rrio r then is
;!<), 70 0-8 :Fine sand SM A-2 0 100 100 80-95 10-30 --- NP
-talent 8-601Fine sand, sand SP-SM, SM,A-2, A-3 0 100 95-100 75-90 5-20 --- NP
71':
V alent 0-8 :Fine sand SM, :A-2 0 100 100 90-95 10-30 --- NP
8-60:Fine sand, sand SP-SM, SMIA-2, A-3 0 100 95-100 75-90 5-20 --- NP
,.oup 0-16:Loamy sand SM :A-2 • , 0 100 100 50-100 15-30 --_ NP
16-60:Fine sand, loamy SP-SM, SM:A-2, A-3: 0 100 100 65-100 5-20 --- NP
sand, sand.
I. See footnote at end of table.
•
9c'll.532
WELD COUNTY, COLORADO, SOUTHERN PART 129
TABLE 13.--PHYSICAL AND CHEMICAL PROPERTIES OF SOILS
The symbol < means less than; > means greater then. The erosion tolerance factor (T) is for the entire
profile. Absence of an entry means data were not available or were not estimated]
Soil name and Depth Permea- ; Risk.of corrosion Eroslonlwind
P Available Soil Salinity; Shrink-map symbol bility water reactionfactors berodi-
ility
I
I swell ;Uncoated Concrete group ca n/iny ;potential steel y
In In/hr In/in � .'Mmhos/cm' K T (group
1
2 0-10 0.6-2.0 0.20-0.24 6.6-7.8 Low ;Moderate Low 0.24 3 j 5
Altvan 10-25 0.6-2.0 0.15-0.17 7.4-8.4 <2 Moderate ;Moderate Low 0.28
25-60 >20 0.02-0.04 7.4-9.0 <2 Low ;Moderate Low 0.10
it:
Aquolls 0-48 ---
48-60 >20 0.04-0.06 7.4-8.4 2-16 Low ;High Moderate --- _-- ---
, Aquents ; 0-48
;48-60 >20 0.04-0.06 7.4-8.4 2-16 Low ;High Moderate ___
eye
Aquolls 0-60 __-
Aquepts-------- 0-60 --- --- _--
Ij, 6, 7, 8, 9 0-8 0.6-6.0 0.11-0.16 6.6-7.8 <2 Low ;Low Low 0. 17; 5 Ascalon 8-18 0.6-2.0 0.13-0.15 6.6-7.8 <2 Moderate ;Moderate Low 0.24; 3 18-60 0.6-6.0 0.11-0. 15 7.9-8.4 <2 Low 'Moderate Low 0.24;
I0 0-4 2.0-6.0 0.09-0. 12 7.4.8.4 <2 Low Moderate Low ,0.10; 5 I 3
Bankard 4-60 6.0-20 0.05-0.08 7.4-8.4 <2 Low Moderate Low
;0. 10;
11, 12 0-16 0.6-6.0 0.11-0.13 6.1-7.3 Low Low Low '0.10; 5 2
3resser 16-25 0.6-2.0 0. 15-0.18 6.6-7.3 --- Low Moderate Low ;7. 15;
25-30 0.6-6.0 0.10-0.13 6.6-7.3 --- Low Low Low ;0.101
30-60 2.0-20 0.05-0.08 6.6-7.3 --- Low Low Low ;0. 10;
111 0-9 2.0-6.0 0.07-0.09 7.4-8.4 <2 Low
:ajo 9-31 6.0-20 0.05-0.08 7.4-8.4 Moderate Low ;0.10; 5 g
8.4 <2 Low Moderate Low ;0.10;
31-60 6.0-20 0.05-0.06 7.4_8.4 <2 Low Moderate Low ;O. t0
14, 15, 16, 17 0-7 0.6-2.0 0.20-0.24 6.6-8.4 <2 Low Moderate Low ;0.37 5 ; 4L
I Colby 7-60 0.6-2.0 0.17-0.22 7.4-8.4
8. <2 Low Moderate Low :0.37
3a:
Colby 0-7 0.6-2.0 0.20-0.24 6.6-8.4 <2 Low
7-60 0.6- Moderate ,Lou 0.37 5 4L
2.0 0.77-0.22 7.4-8.LL <2 Low Moderate Low ,0.37
Y
r, .Adena 0-6 0.6-2.0 0.18-0.21 6.6-7.8 <2 Low Moderate Low ;0.37 5 5
l: 6-9 0.06-0.2 0.16-0. 18 6.6-7.8 <2 High High Low 0.24
9-60 0.6-2.0 0.16-0.18 7.4-8.4 <2 Low High Low 0.32,
,'9, 20------- High
__--- 0-14 0.6-2.0 0.14-0.18 7.4-8.4 <2 Low '
:olombo 14-21 0.6-2.0 0.14-0.16 7.4-8.4 <2 Moderate Hi8h Low 0.38; 5 5
_. 21-60 0.6-2.0 0.14-0.16 7.4-8.4 <2 Low High Low 0.28;
Low 0.28;
21, 22 0-12 0.2-0.6 0.19-0.21 6.6-7.8 <2 Moderate Moderate Low 0.24; 3 5
: .0acono 12-21 0.2-0.6 0.15-0.21 7.4-8.4 <2 High High ,Low 0.24;
21-27 0.2-2.0 0.13-0.18 7.4-8.4 <2 Moderate High ;Low ,0.15;
27-60 >20 0.03-0.05 7.4-8.4 <2 Low High ;Low ;0. 10;
23, 24------------- 0-7 0.6-2.0 0.16-0.20 5.6-7.8 <2 Low Moderate ;Low ;0.20; 5 5
•ort Collins 7-11 0.6-2.0 0.16-0.18 7.4-7.8 <2 Moderate ,Moderate ;Low ;0.20;
11-60 0.6-2.0 0.16-0. 18 7.4-8.4 <2 Low ;High ;Low ;0.20;
25, 26 0-4 0.6-2.0 0. 14-0.18 6.6-8.4 .<8 Low
Haverson 4-60 0.6-2.0 0.14-0.18 7.4-8.4 <8 Low ;High 'Low ;0.28 ` uL
gh ;Low ;0.29
I ', 28 0-60 0.06-0.6 0.12-0.17 7.9-9.0 <8 High ;High ;High ;0.28 5 4
( leldt
See footnote at end of table.
Pei.532
130 SOIL SURVEY
TABLE 13.--PHYSICAL AND CHEMICAL PROPERTIES OF SOILS--Continued
Soil name and Depth Permea- Available; Soil Salinity Shrink- Risk of corrosion Erosion;'dind
map symbol bility water .;reaction factors)etch-
swell Uncoated :Concrete —r—;pility capacity ; potential steel
2 K ; T ;group
In In/hr In/in
Mm ho s/em
29, 30 0-12 2.0-20 O.11-0.15 6.6-7.8 <2 Low Moderate Low 0.24 5 ' 3
Julesburg 12-27 2.0-20 0.11-0.15 6.6-7.8 <2 Low Moderate Low 0.2µ
27-60 >6.0 0.05-0.13 6.6-7.8 <2 Low Moderate Low 0.20
31, 32, 33, 34----- 0-12 0.6-2.0 0.16-0. 18 7.9-8.4 <2 Low Moderate Low 0.32 5 4L
Kim 12-60 0.6-2.0 0.15-0.17 7.9-8.4 <2 Low Moderate Low 0.32
35e:
Loup 0-16 6.0-20 0.10-0.14 6.6-8.4 <2 Low High Low 0. 17 5 2
16-60 6.0-20 0.06-0.08 7.4-8.4 <2 Low High Low 0.17
Sod' 0-14 6.0-20 0.10-0.12 6.6-8.4 <2
14-60 6.0-20 0.05-0.07 6.6-8.4 <2 Low High Low 0.17 5 2
Low High Lou 0.17
361,
Midway----------- 0-13 0.06-0.2 0.12-0.17 7.9-9.0 2-8 High High Low 0.43 1 ; 4
13 --- --- --- --- _
l__. Shingle.r-----_---_ 0-6 0.6-2.0 0.16-0. 18 7.4-9.0 <2 Low High Low 0.32 2 4L
6-18 0.6-2.0 0.16-0.21 7.9-9.0 <2 Moderate High Low 0.49
pppp 18 --- --- --- ---
[ 37, 38 0-9 2.0-6.0 0.13-0.15 7.9-8.4 <2 Low High Low :0.20 2 ' 3
t Nelson 9-30 2.0-6.0 0.11-0.13 7.9-8.4 <2 Low
30 -- --- --- �- High Low ;0.20
39, 40, 41, 42 0-9 0.2-2.0 0. 15-0.20 6.6-7.8 <2 Moderate Moderate Low :0.24 5 6
Nunn 9-29 0.06-0.6 0.15-0.18 7.4-8.4 <2 High High Low ;0.28
29-60 0.2-2.0 0.10-0.18 7.4-8.4 <2 Moderate High Low ;7.24
43 0-9 2.0-6.0 0.10-0.74 6.6-7.8 <2 Low Moderate Low ;0.15 5 3
Nunn 9-29 0.06-0.6 0.15-0.18 7.4-8.4 <2 High High
I
_ 29-60 0.2-2.0 0.10-0.78 7.4-8.4 <2 Moderate High Low ;7.28
L 44, 45 0-10 6.0-20 0.06-0.10 6.6-7.8 <2 Low Low
LowOlney 10-20 0.6-2.0 0.13-0.15 6.6-7.8 <2 Moderate High Low 0.74 7 5 2
20-25 0.6-6.0 0.71-0.15 7.9-8.4 <2 Low Z
25-60 2.0-6.0 0.06-0.13 7.9-8.4 <2 High Low ;0.20
Low High Low ;0.20
46, 47, 48 0-10 0.6-6.0 0.11-0.15 6.6-7.8 <2 Low Moderate ,Low ;0.20 5 3
Olney 10-20 0.6-2.0 0.73-0.15 6.6-7.8 <2 Moderate High ;Low ;0.24,
20-25 0.6-6.0 0.11-0.15 7.9-8.4 <2 Low High ;Low ;0.24;
llll 25-60 2.0-6.0 0.06-0.13 7.9-8.4 <2 Low High ;Low ;0.201
49 0-22 6.0-20 0.05-0.08, 6.6-7.3 --- Low Low
Osgood 22-34 2.0-6.0 0.10-0.13; 6.6-7.3 --- Low ,Low Low 0. 17; 5 1
34-60 6.0-20 0.06-0.081 6.6-8.4 (2 Low---___; Low 0.17;
Moderate Low 0. 10;
50, 51, 52, 53----- 0-12 6.0-20 0.09-0.131 7.4-8.4 <2 Low---__-;High Low 0. 10 5 2
Otero 12-60 6.0-20 0.08-0.121 7.4-8.4 <4 Low ;High Low 0.10
. _ 54, 55 0-20 0.6-2.0 0.16-0.181 6.6-7.3
Paoli 20-25 >6.0 0.14-0.17; 7.4-7.8 <2 Low ;Moderate Low 0.20, 5 5
;High 'Low 0.20;
25-60 >6.0 0.12-0.14; 7.4-8.4 <2 Low
High ;Low 0.20
56, 57 0-9 0.2-0.6 0.17-0.21 ; 6.6-7.8 <2 Moderate ;High ;Low 0.37 3 6
Renohill 9-32 0.06-0.2 0.14-0. 16; 6.6-8.4 <2 High ;High ;Low 0.32,
32 --- --- --- ---
58, 59 0-6 0.6-2.0 0.16-0.181 7.4-9.0 <2 Low :High {Low 0.32; 2 4L
Shingle 6-18 0.6-2.0 0.16-0.21 ; 7.9-9.0 <2 Moderate ;High----;Lou
78 --- --- --- -_- ,O.u9
1. 60+:
Shingle ---- 0-6 0.6-2.0 0.76-0.78; 7.4-9.0 <2
Low :High
6-18 0.6-2.0 0.16-0.211 7.9-9.0 <2 Moderate :Hih ;Low ;0.49, 2 I uL
18 --- --- --- --- g ;Low ;0.49;
See footnote at end of table.
991532
132 SOIL SURVEY
TABLE 14.--SOIL AND WATER FEATURES
[Absence of an entry indicates the feature is not a concern. See text for descriptions of symbols and such
terms as "rare," "brief," and "perched." The symbol < means less than; > means greater than]
rlooding High water table Bedrock
Soil name and Hydro— , Potential
map symbol logic Frequency Duration Months I Depth Kind Months Depth Hard— frost
group ness action
Ft In
1, 2 B None-------- --_ _—_ ' >6.0 --- _-- >60 --- Moderate.
Altvan
,
311:
Aquolls D Frequent---- Brief---- Apr-Jun 0.5-1.0 Apparent Apr-Jun >60 --- High.
Aquents 0 Frequent---- Brief Apr-Jun 0.5-1.0 Apparent Apr-Jun >60 --- High.
1. 44:
> Aquolls D Frequent---- Brief---- Apr-Jun 0.5-1.5 Apparent Apr-Jun >60 --- High.
Aquepts 0 Frequent---- Brief Apr-Jun 0.5-1.5 Apparent Apr-Jun >60 --- High.
i
5, 6, 7, 8, 9 B None -- --- >6.0 -- --- ' >60 --- Moderate.
Ascalon
10-- A Frequent Brief--- Mar—Jun >6.0 -- --- >60 --- Low.
Bank and
11, 12 B None --- --- >6.0 -- --- >60 --- Moderate.
Bresser
13 A None --- --- >6.0 -- --- >60 --- Low.
Cascajo
14, 15, 16, 17---- B None --- --- >6.0 --- --- >60 --- Low.
Colby
1811:
Colby B None --- --- >6.0 --- --- >60 --- Low.
Adena C None --- --- >6.0 ---- >60 --- Low.
19, 20 B Rare >6.0 >60 Moderate.
Colombo
21 , 22 C None -- --- >6.0 --- -__ >60 --- Low.
I . Dacano
23, 24 B None to rare --- -- >6.0 -- --- ; >60 --- Low.
Fort Collins
25, 26 B Rare to Brief May-Sep >6.0 --- -- >60 --- Low.
Haverson common.
27, 29 C None --- --- >6.0 -- --- >60 --- Low.
Heldt
29, 30 A None --- --- >6.0 --- --- >60 --- Moderate.
Julesburg
31 , 32, 33, 34---- 9 None --- --- >6.0 --- --- j >60 --- Low.
Kim
3511.
Loup 0 ;Rare to Brief Mar-Jun,+.5-1.5 Apparent Nov-May; >60 --- Moderate.
; common.
Boel A . ;Occasional Brief Mar-Jun 1.5-3.5 Apparent ---Nov-May; >60Moderate.
36':
Midway 0 ;None --- --- >6.0 --- --- ;10-20IRip— Low.
I gable
See footnote at end of table.
i.
P .'1532
WELD COUNTY, COLORADO, SOUTHERN PART 133
I � TABLE 14.--SOIL AND WATER FEATURES--Continued
Soil name and Flooding High water table Hydro-1 Bedrock
Potential
map symbol logic Frequency Duration ;Months Depth Kind Months Depth Hard-s. frost
group
Ft mess action
36a: In
i Shingle----_----- 0 None ; --- >6.0
'-- --- 10-20 Rip- Low.
37, 38------------ i pable
B None ; -- >6.0 Nelson �- --- -- 20-40 Rip- Low.
pable
39, 40, 41, 42,
Nunn C None --- —_ >fi.0 -__ _--
>60 --- Moderate.
, 44, 45, 46, 47,
48--- B None i:3 Olney --- >6.0 -__ --- Low.
40s ood A None— --- >6.0
g --- -- >60 --- Low.
I... 50, 51, 52, 53--- B None >6.0 Otero --- --- --- >60 --- Low.
54,ao 55--- B None to rare
��. Pll >6.0 —' --- >60 --- Moderate.
56, 57 ------_ C None--_—_--
Renohill --- --- >6.0 --- --- 20-40 Rip- Low.
pable
58, 59
Shingle
pa D None _-_ --- >6.0 ___ --- 10-20 Rip- Low.
60.1: pable
hingle-- D None --- >6.0 --- --- 10-20 RiP- Low'
pable
Renohill-------- C None
--- --- >6.0 ___ --- 20-40 Rip- Low.
pable
61-- 0 None---
_ Tassel '-' --- >6.0 _-- --- 10-20 Rip- Low.
pable
8 N
62, 63
tone
1t Terry "- --- >6.0 —_ --- 20-40 Rip-
—_ pable
Low.
t 64, 65 Pable
Thedalund C None ; --- --- >6.0 --- --- 20-40 Rip- Low.
pable
F 66, 67
C None---
' Ulm i --' --- >6.0 -__ --- >60 ---
Low.
Ustic A None I --_ >6.0 ___ --- >60 --- Low.
Torriorthents
69, 70
Valent A None __- --- >6.0 -- __- >60 --- Low.
71+:
Valent A None
>60 --- Low.
-
Loup D Rare to Brief---- Mar-
common. Jun ..5-7.5 Appar en C;Nov-May >60 --- Moderate.
72, 73, 74, 75,
76, 77
Vona B None __- --- >6.0 __- __- >60 ___ Low.
See footnote at end of table.
9'x1.532
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TABLE 1
Engineering Classification of Soils
(Moreland and Moreland, 1975
Percent Percent Less Than 3 Inches Passing
Soil Depth •
Unified Soil Coarser Sieve Number
Name (inches) Classification than 3
Inches 4 10 40 200
0-60 CH or CL 0 95-100 95-100 95-100 75-95
Heldt
Renohill 0-9 CL or ML 0 85-100 80-100 80-95 70-80
9-32 CL or CH 0 95-100 90-100 90-100 75-95
32 -
Shingle 0-6 CL-ML 0-5 75-100 75-100 70-95 55-75
6-18 CL 0 75-100 75-100 65-100 50-80
18 -_ --_
91.532
: 20 SOIL SURVEY
from grass and weeds are the principal hazards in tion ranges from 1,600 pounds per acre in favorable years
establishing tree and shrub plantings. Summer fallowing a to 1,000 pounds in unfavorable years. As range condition
r year in advance in nonirrigated areas and continued cul- deteriorates, the tall grasses decrease, blue grama and
tivation for weed control are needed to insure establish- buffalograss increase, and forage production drops. Un-
ment and survival of plantings. Supplemental irrigation desirable weeds and annuals invade the site and erosion
may be needed. Trees that are best suited and have good can occur as range condition becomes poorer.
survival are Rocky Mountain juniper, eastern redcedar, Management of vegetation on this soil should be based
ponderosa pine, Russian-olive, and hackberry. The shrubs on taking half and leaving half of the total annual produc-
best suited are skunkbush sumac, lilac, Siberian peashrub, don. Seeding is desirable if the range is in poor condition.
and American plum. Western wheatgrass, switchgrass, sand reedgrass,
Wildlife is an important secondary use of this soil. The sideoats grama, pubescent wheatgrass, intermediate
cropland areas provide favorable habitat for ring-necked wheatgrass, and blue grama are suitable for seeding. The
pheasant and mourning dove. Many nongame species can grass selected should meet the seasonal requirements of
be attracted by establishing areas for nesting and escape livestock It can be seeded into a firm prepared seedbed.
cover. For pheasants, undisturbed nesting cover is essen- A grass drill should be used. Seeding early in spring has
tial and should be included in plans for habitat develop- proven most successful
ment, especially in areas of intensive agriculture. Windbreaks and environmental plantings are well
This soil is poorly suited to urban and recreational suited to this soil. Flooding and moisture competition
development because of the susceptibility to flooding. from grass and weeds are the principal hazards in
Capability suMlass-IIw irrigated. establishing tree and shrub plantings. Summer fallowing a
26—Haverson loam, 1 to 3 percent slopes. This is a year in advance in nonirrigated areas and continued cul-
deep, well drained soil on low terraces and flood plains at tivation for weed control are needed to insure establish-
elevations of 4,500 to 4,800 feet. It formed in stratified ment and survival of plantings Supplemental irrigation
calcareous alluvium. Included in mapping are small areas may be needed. Trees that are best suited and have good
f of soils that have fine sandy loam and sandy loam under-
lying survival are Rocky Mountain juniper, eastern redcedar,
material and small areas of soils that have sand and ponderosa pine, Russian-olive, and hackberry. The shrubs
best suited are skunkbush sumac, lilac, Siberian peashrub,
gravel within a depth of 40 inches.
mall and American plum.
Typ' y the surface layer of this Haverson soil is Wildlife is an important
grayish brown loam about 4 inches thick. The underlying Po secondary use of this soil. The
material to a depth of 60 inches is pale brown loam pheasant
cropland areas provide favorable habitat for ring-necked
stratified with thin lenses of loamy sand and clay loam. Pheasant and mourning dove. Many for nests a species can
Permeability is moderate. Available water capacity is be attracted by establishing areas nesting and escape
high. The effective rooting depth is 60 inches or more. cover. For pheasants, undisturbed nesting cover is essen-
Surface runoff is slow to medium, and the erosion hazard tial and should be included in plans for habitat develop
is low. ment, especially in areas of intensive agriculture. Range-
In irrigated areas this soil is suited to all crops corn-
land wildlife, for example, the pronghorn antelope, can be
attracted b developing livestock watering facilities,
monly grown in the area, including corn, sugar beets, y P g
beans, alfalfa small managing livestock grazing, and reseeding where needed.
grain, potatoes, and onions. An exam- Phis soil is poorly suited to urban and recreational
pie of a suitable cropping system is 3 to 4 years of alfalfa development because of the susceptibility to flooding.
followed by corn, corn for silage, sugar beets, small grain. Capability suholaay IIe irrigated, IVe nonirrigated;
or beans. Land leveling, ditch lining, and installing' oamy Plains range site.
pipelines may be needed for proper water applications. J7_Heldt silty clay: 1 to 3 percent slopes. This is a
All methods of irrigation are suitable, but furrow ir- oep mooeratery wen drained soil on plains at elevations
• rigation is the most common. Barnyard manure and corn- of 4,950 to 5,050 feet. It formed in alluvial sediment
mercial fertilizer are needed for top yields. derived from shale. Included in mapping are small areas
In nonirrigated areas this soil is suited to winter wheat, of soils that have a clay loam or silt loam subsoil and sub-
barley, and sorghum. Most of the acreage is planted to stratum.
winter wheat. The predicted average yield is 28 bushels Typically the surface layer is light brownish gray and
per acre. The soil is summer fallowed in alternate years light yellowish brown silty clay about 7 inches thick The
to allow moisture accumulation. Generally precipitation is subsoil is light brownish gray silty clay about 27 inches
too low for beneficial use of fertilizer. thick. The substratum to a depth of 60 inches is silty clay.
Stubble mulch fanning, striperopping, and minimum til- Permeability is slow. Available water capacity is high.
lage are needed to control soil blowing and water erosion. The effective rooting depth is 60 inches or more. Surface
Terracing also may be needed to control water erosion. runoff is medium, and the erosion hazard is moderate.
The potential native vegetation is dominated by In irrigated areas this soil is suited to crops commonly
western wheatgrass. Blue grama, switchgrass, sand grown in the area, such as corn, sugar beets, beans. alfal-
reedgrass, big bluestem, slender wheatgrass, indiangrass, fa, and small grain. The high clay content generally
and green needlegrass are also present. Potential produc- restricts some crops.
Qc"i 532
-
WELD COUNTY, COLORADO, SOUTHERN PART
2Most methods of irrigation are suitable, but furrow ir- 1
rigation is the most common- Proper grown crops should be grown at least o 50 percent of the
irrigation water time. Contour ditches and corrugations can be used in ir-
management is essential. Barnyard manure and commer- rigating close grown crops and pasture. Furrows, contour
cial fertilizer are needed for top yields. furrows, and cross slope furrows are suitable for row
In nonirrigated areas this soil is suited to winter wheat, crops. Keeping tillage to a minimum and utilizing crop
barley, and sorghum. Most of the acreage is planted to residue help to control erosion. Maintaining fertility is im-
winter wheat. The predicted average yield is 25 bushels portant. Crops respond to applications of phosphorus and
per acre. The soil is summer fallowed in alternate years nitrogen.
• to allow moisture accumulation. Generally precipitation is In nonirrigated areas this soil is suited to winter wheat,
too low for beneficial use of fertilizer. barley, and sorghum. Most of the acreage is planted to
Stubble mulch fanning, striperopping, and minimum til- winter. wheat The predicted average yield is 20 bushels
lage are needed to control soil.blowing and water erosion. per acre. The soil is summer fallowed in alternate years
The potential native vegetation is dominated by to allow moisture accumulation. Generally
western wheatgrass and blue grama. Buffalograss is also too low for beneficial use of fertilizer. y precipitation is
present Potential production ranges from 1,000 pounds in Stubble mulch farming, striperopping, and mimimum
favorable years to 600 pounds in unfavorable years. As tillage are needed to control soil blowing and water ero-
range condition deteriorates, a blue grama-buffalograss sion. Terracing also may be needed to control water ero-
_ sod forms. Undesirable weeds and annuals invade the site sion.
as range condition becomes poorer.
The Management of vegetation on this soil should be based western wheatgrass
native vegetation is dominated by
on taking half and leaving half of the total annual and blue grams. from ograss is also
tion. Range pitting can help Pron is persacr in tenor! production ranges ps from 1,000 pounds
� in reducing runoff. Seeding is per acre in favorable years to 600 pounds in unfavorable
desirable if the range is in poor condition. Western years. As range condition deteriorates, a blue grama-buf-
��ngtrass, blue grams, sideoats grams, buffalograss pu- falograss sod forms. Undesirable weeds and annuals in-
I wheatgrass, and crested wheatgrass are suitable vade the site as ran
becomes
for seeding. The grass selected should meet the seasonal Management of vegetation on this soil should be based
requirements of livestock, It can be seeded into a clean, on taking half and leaving half of the total annual produc-
firm sorghum stubble, or it can be drilled into a firm tion. Range pitting can help in reducing runoff. Seeding is
t prepared
successful.most seedbed.
ee � Seeding early in spring has proven desirable if the range is in poor condition. Western
and environmental plantings arey wheatgrass, blue gtarna, sideoats grams, buffalograss, pu-
Windbreaks not suited to this soil Onsite investigati is needed to fobr semi=g.wheatgrass,r, and crested should utmeet are on
{ determine if plantings n grass t selected. Ibe meet the seasonal
cl
are feasible. Successful windbreaks requirements of livestock. It can seeded into a clean,
require supplemental water.
firm sorghum stubble, or it can be drilled into a firm
Openland wildlife, such as pheasant, mourning dove, prepared seedbed. Seeding early in spring has proven
and cottontail, are best suited to this soil Supplemental most successful.
j- water is neededin wildlife habitat development, including Windbreaks and environmental plantin
erally are
the tree and shrub plantings that serve as nesting areas. not suited to this soil. Onsite inv stigation gisnneeded to
This soil has poor potential for urban and recreational determine if plantings are feasible. Successful windbreaks
development. Slow permeability and high shrink swell require supplemental water.
create problems in dwelling and road construction- Capa- Openland wildlife, such as pheasant, mourning dove,
bility subrlace Its irrigated, IVe nonirrigated; Clayey and cottontail, are best suited to this soil Supplemental
�PLv neededfor wildlife habitat development, includ-
3l—Reldt silty clay. 3 to 5 percent slopes. This is a ing tree and shrub plantings that serve as nesting areas.
deep, macerate y we grained soil on plains at elevations This soil has poor potential for urban and recreational
of 4,950 to 5.050 feet It formed in alluvial sediment development Slow permeabilty and high shrink swell
derived from shale. Included in mapping are small areas create problems in dwelling and road construction- Capa-
of soils that have a clay loam or silt loam subsoil and sub- bility subclass IIIe irrigated, IVe nonirrigated; Clayey
stratum. Plains range site.Typically the surface layer is light brownish gray and 29—Julesburg sandy loam, 0 to 1 percent slopes. This
light yellowish brown silty clay about 7 inches thick The is a deep, well drained soil on terraces at elevations of
subsoil is light brownish gray silty clay about 21 inches 4.700 to 4.800 feet It formed in alluvium deposited by the
thick The substratum to a depth of 60 inches is silty clay. South Platte River. Included in mapping are some leveled
Permeability is slow. Available water capacity is high. areas and small areas of soils that have a loamy sub-
The effective rooting depth is 60 inches or more. Surface stratum.
runoff is medium, and the erosion hazard is moderate. Typically the surface layer of this Julesburg soil is
In irrigated areas this soil is suited to crops commonly brown sandy loam about 12 inches thick. The subsoil is
grown in the area. Perennial grasses and alfalfa or close brown and pale brown sandy loam about 18 inches thick.
pc1.532
38 SOIL SURVEY
years. As range condition deteriorates, a blue grama-buf- Closely spaced contour ditches can be used in irrigating
falograss sod forms. Undesirable weeds and annuals in- close grown crops. Contour furrows should be used for
vade the site as range condition becomes poorer. row crops. Applications of barnyard manure and commer-
Management of vegetation on this soil should be based cial fertilizer help to maintain good production. Keeping
on taking half and leaving half of the total annual produc- tillage to a minimum and utilizing crop residue are impor-
don. Range pitting can reduce runoff. Seeding is desirable tarn.
if the range is in poor condition. Western wheatgrass, The potential native vegetation is dominated by
blue grama, sideoats grama, buffalograss, pubescent western wheatgrass and blue grama. Buffalograss is also
•
wheatgrass, and crested wheacgrass are suitable for seed- present. Potential production ranges from 1,000 pounds
ing. The grass selected should meet the seasonal require- Per acre in favorable years to 600 pounds in unfavorable
ments of livestock. It can be seeded into a clean, firm years. As range condition deteriorates, a blue grama-buf-
• sorghum stubble, or it can be drilled into a firm prepared falograss sod forms. Undesirable weeds and annuals in-
seedbed. Seeding early in spring has proven most success- vade the site as range condition becomes poorer.
fu, Management of vegetation on this soil should be based
Windbreak and environmental plantings are generally on taking half and leaving half of the total annual produc-
not suited to this soiL Onsite investigation is needed to trop. Range pitting can reduce runoff. Seeding is desirable
determine if plantings are feasible. Supplemental water is if the range is in poor condition. Western wheatgrass,
needed for successful plantings. blue grama, sideoats grama, buffalograss. pubescent
Wildlife is an important secondary use of this soil. The wheatgrass, and crested wheatgrass are suitable for seed-
cropland areas provide favorable habitat for ring-necked ing. The grass selected should meet the seasonal require-
_
pheasant and mourning dove. Many nongame species can ments of livestock. It can be seeded into a clean, firm
be attracted by establishing areas for nesting and escape
[ sorghum stubble, or it can be drilled into a firm prepared
t cover. For pheasant, undisturbed nesting is essential and seedbed. Seeding early in spring has proven most success-
should be included in plans for habitat development, espe- fu
daily in areas of intensive agriculture. Rangeland wildlife, Windbreaks and environmental plantings are generally
for example, the pronghorn antelope, can be attracted by not suited to this soil. Onsite investigation is needed to
developing livestock watering facilities, managing determine if plantings are feasible. Supplemental water is
livestock grazing, and reseeding where needed. needed for successful plantings.
This soil has poor potential for urban uses and only Wildlife is an important secondary use of this soil. The
moderate potential for recreational development The cropland areas provide favorable habitat for ring-necked
I chief limiting features are the underlying shale, the low pheasant and mourning dove. Many nongame species can
strength, and the moderate to high shrink swelL These be attracted by establishing areas for nesting and escape
cover. For pheasants, undisturbed nesting cover is essen-
features present severe problems in dwelling and road
tial and should be included in plans for habitat develop-
construction and in use of septic tank absorption fields
ment, especially in areas of intensive agriculture. Range-
and sewage lagoons. Capability subclass Ills irrigated,
land wildlife, for example, the pronghorn antelope, can be
*Ve nonirrigated; Clayey Plains range site.57—Renohill ciao loamattracted by developing livestock watering facilities.
to percent slopes. This is
loam, 3 9
managing livestock grazing, and reseeding where needed.
i a moderately deep, wets utatned soil on upland hills and This soil has poor potential for urban and recreational
ridges at elevations of 4,850 to 5.200 feet. It formed in development. The chief limiting features are the underly-
residuum from shale. Included in mapping are small areas ing shale, the low strength, and the moderate to high
of soils that have shale deeper than 40 inches. shrink swell. These features present severe problems in
Typically the surface layer is grayish brown clay loam dwelling and road construction and in use of septic tank
about 9 inches thick. The subsoil is grayish brown and absorption fields and sewage lagoons. Capability subclass
•
pale brown clay loam about 12 inches thick. The sub- IVe irrigated, VIe nonirrigated: Clayey Plains range site.
. stratum is pale brown clay loam. Shale is at a depth of 58—Shingle loam, 1 to 3 percent slopes. This is a shal-
about 29 inches. low, well drained soil on plains at elevations of 4.850 to
Permeability is slow. Available water capacity is 5,200 feet. It formed in residuum from shale. Included in
moderate. The effective rooting depth is 20 to 40 inches. mapping are some small areas of shale and sandstone out-
Surface runoff is medium to rapid, and the erosion hazard crops.
is moderate.
Typically the surface layer is grayish brown loam about
This soil is suited to limited cropping. Intensive 6 inches thick. The underlying material is light yellowish
• cropping is hazardous because of erosion. The cropping brown clay loam. Shale is at a depth of about 18 inches.
system should be limited to such close grown crops as al- Permeability is moderate. Available water capacity is
falfa, wheat, and barley. The soil also is suited to ir- low. The effective rooting depth is 10 to 20 inches. Sur-
rigated pasture. A suitable cropping system is 3 to 4 face runoff is medium, and the erosion hazard is low.
years of alfalfa followed by 2 years of corn and small This soil is suited only to limited cropping. A suitable
grain and alfalfa seeded with a nurse crop. cropping system is 3 to 4 years of alfalfa and 2 Years of
til
c'i .,532
.,
WELD COUNTY, COLORADO, SOUTHERN PART
39
small grain or irrigated pasture. This soil has severe orates, the mid grasses decrease and forage production
restrictions and requires very careful management. Most drops. Undesirable weeds and annuals invade the site as
irrigation methods are suitable, but the length of runs range condition becomes poorer.
should be short to prevent overirrigation. Light, frequent Management of vegetation on this soil should be based
irrigations are best. Barnyard manure and commercial on taking half and leaving half of the total annual produc-
fertilizer are needed for normal yields. tion. Seeding
The potential native vegetation is dominated by alkali Western wheatgrass,
desirable ifthe range k is in poor condition.
sacaton, western wheatgrass, and blue8� grams, alkali sacaton, crested
falograss, sideoats tern grama. Buf- grams. little bluestem, pubescent for seeding. The grass
and crested
ted
bluestem, sedge, winterfat. d fourwing saltbush are read, halso should ttle meet the season are al requirements of livestock. It canpresent Potential production ranges from 800 pounds per be seeded into a clean, firm sorghum stubble or it can be
acre in favorable years to 500 pounds in unfavorable drilled into a firm prepared seedbed. Seeding early in
years. As range condition deteriorates, the mid grasses spring has proven most successful.
decrease and forage production drops. Undesirable weeds Windbreaks and environmental plantings are generally
and annuals invade the site as range condition becomes not suited to this soil. Onsite investigation is needed to
poorer. determine if plantings are feasible.
Management of vegetation on this soil should be based Rangeland wildlife, such as antelope, cottontail, and
on taking half and leaving half of the total annual produc- coyote, are best suited to this soil. Because forage produc-
tion. Seeding is desirable if the range is in poor condition. tion is typically low, grazing management is needed if
Western wheatgrass, blue grama, alkali sacaton, sideoats livestock and wildlife share the range. Livestock watering
grama, little bluestem, pubescent wheatgrass, and crested facilities also are utilized by various wildlife species.
wheatgrass are suitable for seeding. The grass selected This soil has poor potential for urban and recreational
f should meet the seasonal requirements of livestock It can development. The chief limiting feature is the shallow
be seeded into a clean, firm sorghum stubble or it can be depth to shale. Capability subrlaas VIe irrigated, VIe
drilled into a firm prepared seedbed. Seeding early in nonirrigated; Shaly Plains range site.
spring has proven most successful. 60—Shingle-Renohill complex. 3 to 9 percent slopes.
( Windbreaks and environmental plantings are generally This gently sloping to moderately sloping map unit is on
not suited to this soil Onsite investigation is needed to plains, hills, and ridges at elevations of 4,600 to 4,750 feet
determine if plantings are feasible. The Shingle soil makes up about 65 Rangeland wildlife, such as antelope, cottontail, percent. Abbou of 10 percent
the cent
Icoyote, are best suited to this soil. Because forage produc- is�Tassel Rfinehsandy loam.soil about Th25 Shingle soil occupies the
tion is typically low, grazing management is needed if steeper, convex parts of the landscape, and the Renohill
livestock and wildlife share the range. Livestock watering soil occupies the less steep, slightly concave positions.
facilities also are utilized by various wildlife species. The Shingle soil is shallow and well drained. It formed
i This soil has poor potential for urban development. The in residuum from calcareous shale. Typically the surface
chief limiting feature is the shallow depth to shale. Cana- layer is grayish brown loam about 6 inches thick The un-
bility subclass IVs irrigated, VIs nonirrigated; Shaly derlying material is light
f._- sins range site. _ g yellowish brown clay loam. Cal-
careous clayey shale is at a depth of about 18 inches.
— hin le loam 3 to 9 percent slopes. This is a shal- Permeability is moderate. Available water capacity is
we b on upland hills and ridges at eleva- low. The effective rooting depth is 10 to 20 inches. Sur-
.• Lions of 4,850 to 5,200 feet. It formed in residuum from face runoff is medium to rapid, and the erosion hazard is
shale. Included in mapping are some small outcrops of moderate.
shale and sandstone. The Renohill soil is moderately deep and well drained.
Typically the surface layer is grayish brown loam about It formed in residuum from shale. Typically the surface
4 inches thick The underlying material is light yellowish layer is grayish brown clay loam about 9 inches thick. The
brown clay loam about 10 inches thick Shale is at a depth subsoil is grayish brown and pale brown clay loam about
of about 16 inches. 14 inches thick. The substratum is clay loam. Shale is at a
Permeability is moderate. Available water capacity is depth of about 32 inches.
low. The effective rooting depth is 10 to 20 inches. Sur- Permeability is slow. Available water capacity is
face runoff is medium to rapid, and the erosion hazard is moderate. The effective rooting depth is 20 to 40 inches.
moderate. Surface runoff is rapid, and the erosion hazard is
The potential native vegetation on this soil is moderate.
dominated by alkali sacaton, western wheatgrass, and This unit is used for rangeland and wildlife habitat. The
blue grama. Buffalograss, sideoats grama, needle- potential native .vegetation on the Shingle soil is
andthread. little bluestem, sedge, winterfat and fourwing dominated by alkali sacaton, western wheatgrass, and
saltbush are also present. Potential production ranges blue grama. Buffalograss, sideoats grama. needle-
from 800 pounds per acre in favorable years to 500 andthread. little bluestem. sedge, winterfat. and fourwing
Pounds in unfavorable years. As range condition deteri- saltbrush are also present. Potential production ranges
Hello