HomeMy WebLinkAbout20180088.tiffFederal Emergency Management Agency
RECEIVED
DEC 2 7 2017
WELD COUNTY
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
The Honorable Julie Cozad
Chair, Weld County
Board of County Commissioners
P. O. Box 758
Greeley, CO 80632
Dear Ms. Cozad:
Washington, D.C. 20472
December 15, 2017
IN REPLY REFER TO: COMMISSIONERS
Case No.: 17-08-0666P
Community Name:
Community No.:
Effective Date of
This Revision:
Weld County, CO
080266
April 30, 2018
The Flood Insurance Study report and Flood Insurance Rate Map for your community have been revised by this
Letter of Map Revision (LOMR). Please use the enclosed annotated map panel(s) revised by this LOMR for
floodplain management purposes and for all flood insurance policies and renewals issued in your community.
Additional documents are enclosed that provide information regarding this LOMR. Please see the List of Enclosures
below to determine which documents are included. Other attachments specific to this request may be included as
referenced in the Determination Document. If you have any questions regarding floodplain management regulations
for your community or the National Flood Insurance Program (NFIP) in general, please contact the Consultation
Coordination Officer for your community. If you have any technical questions regarding this LOMR, please contact
the Director, Mitigation Division of the Department of Homeland Security's Federal Emergency Management
Agency (FEMA) in Denver, Colorado, at (303) 235-4830, or the FEMA Map Information eXchange (FMIX) toll free
at 1-877-336-2627 (1-877-FEMA MAP). Additional information about the NFIP is available on our website at
hops://www.fema.govinational-flood-insurance-program.
Sincerely,
Patrick "Rick" F. Sacbibit, P.E., Branch Chief
Engineering Services Branch
Federal Insurance and Mitigation Administration
List of Enclosures:
Letter of Map Revision Determination Document
Annotated Flood Insurance Rate Map
Annotated Flood Insurance Study Report
cc: Mr. Kelly Arnold
Town Manager, Town of Windsor
Mr. Tom Parko, Jr., M.A.
Director of Planning Services
Weld County
Mr. Doug Roth, P.E., CFM
Civil Engineer
Town of Windsor
Mr. Chris Pauley, P.E., CFM
Project Engineer
Anderson Consulting Engineers, Inc.
CoMMuniCatiOnS
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2018-0088
Page 1 of 6 '
Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
Federal Emergency Management Agency
° Washington, D.C. 20472
LETTER OF MAP REVISION
DETERMINATION DOCUMENT
COMMUNITY AND REVISION INFORMATION
PROJECT DESCRIPTION
BASIS OF REQUEST
COMMUNITY
Weld County
Colorado
(Unincorporated Areas)
CHANNELIZATION
DETENTION BASIN
FILL
C U
CULVERT
HYDRAULIC ANALYSIS
UPDATED TOPOGRAPHIC DATA
COMMUNITY NO.: 080266
IDENTIFIER
John Law Floodplain Residential Flood Risk Reduction Project
APPROXIMATE LATITUDE AND LONG TUDE: 40.484, -104.870
SOURCE: USGS QUADRANGLE DATUM: NAD 83
ANNOTATED MAPPING ENCLOSURES
ANNOTATED STUDY ENCLOSURES
TYPE: FIRM* NO.: 08123C1482E DATE: January 20, 2016
TYPE: FIRM* NO.: 08123C1501 E DATE: January 20, 2016
DATE OF EFFECTIVE FLOOD INSURANCE STUDY: January 20, 2016
PROFILES: 58P -60P, 62P, 74P AND 145P
DELETED PROFILES: 53P AND 61 P
SUMMARY OF DISCHARGES TABLE: 2
Enclosures reflect changes to flooding sources affected by this revision.
* FIRM - Flood Insurance Rate Map
FLOODING SOURCES AND REVISED REACHES See Page 2 for Additional Flooding Sources
John Law Ditch - From the downstream side of C and S Railroad to approximately 80 feet downstream of the Great Western Railroad
John Law - West Tributary - From the confluence with John Law Ditch to the upstream side of State Highway 19
SUMMARY OF REVISIONS
Flooding Source Effective Flooding Revised Flooding Increases Decreases
John Law Ditch Zone AE Zone AE YES YES
Zone AE Zone AH YES YES
BFEs* BFEs YES YES
John Law - West Tributary Zone AE Zone AE YES YES
* BFEs - Base Flood Elevations
DETERMINATION
This document provides the determination from the Department of Homeland Security's Federal Emergency Management Agency (FEMA)
regarding a request for a Letter of Map Revision (LOMR) for the area described above. Using the information submitted, we have determined that
a revision to the flood hazards depicted in the Flood Insurance Study (FIS) report and/or National Flood Insurance Program (NFIP) map is
warranted. This document revises the effective NFIP map, as indicated in the attached documentation. Please use the enclosed annotated map
panels revised by this LOMR for floodplain management purposes and for all flood insurance policies and renewals in your community.
This determination is based on the flood data presently available.
any questions about this document, please contact the FEMA Map
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria,
http://www.fema.uovinational-flood-insurance-program.
The enclosed documents provide additional information regarding this determination. If you have
Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
VA 22304-6426. Additional Information about the NFIP is available on our website at
"Rick" F. Sacbibit, P.E., Branch Chief
Services Branch 17-08-0666P 102 -I -A -C
Insurance and Mitigation Administration
Patrick
Engineering
Federal
Page 2 of 6 '
Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
Federal Emergency Management Agency
Washington, D.C. 20472
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
OTHER FLOODING SOURCES AFFECTED BY THIS REVISION .
FLOODING SOURCES AND REVISED REACHES
John Law -West Tributary - From the confluence with John Law Ditch to the upstream side of State Highway 19
Greeley Canal No. 2 - From approximately 350 feet downstream of State Highway 392 to the divergence from John Law Ditch
John Law -. SH 392 Overflow - From the confluence with John Law - West Tributary to the divergence from John Law Ditch
John Law Ditch - Colorado and Southem Railroad Flow Path - From approximately 750 feet downstream of the divergence from John Law Ditch to the divergence
from John Law Ditch
SUMMARY OF REVISIONS
Flooding Source Effective Flooding Revised Flooding Increases Decreases
John Law - West Tributary BFEs BFEs YES YES
Greeley Canal No. 2 Zone AE Zone AE NONE YES
BFEs BFEs NONE YES
John Law - SH 392 Overflow Zone AE Zone AE YES NONE
BFEs BFEs NONE YES
John Law Ditch - Colorado and Southern Railroad Flow Path BFEs BFEs NONE YES
Zone AE Zone AE NONE YES
* BFEs - Base Flood Elevations
This determination is based on the flood data presently available.
any questions about this document, please contact the FEMA Map
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria,
hftp://www.femasiovinational-flood-insurance-program.
The enclosed documents provide additional information regarding this determination. If you have
Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
VA 22304-6426. Additional Information about the NFIP is available on our website at
"Rick" F. Sacbibit, P.E., Branch Chief
Services Branch 17-08-0666P 102 -I -A -C
Insurance and Mitigation Administration
Patrick
Engineering
Federal
Page 3 of 6
Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
Federal Emergency Management Agency
Washington, D.C. 20472
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
OTHER COMMUNITIES AFFECTED BY THIS REVISION
CID Number: 080264 Name: Town of Windsor, Colorado
AFFECTED MAP PANELS
AFFECTED PORTIONS OF THE FLOOD INSURANCE STUDY REPORT
TYPE: FIRM* NO.: 08123C1482E DATE: January 20, 2016
TYPE: FIRM* NO.: 08123C1501E DATE: January 20, 2016
DATE OF EFFECTIVE FLOOD INSURANCE STUDY: January 20, 2016
PROFILES: 59P -60P, 74P AND 145P
SUMMARY OF DISCHARGES TABLE: 2
This determination is based on the flood data presently available.
any questions about this document, please contact the FEMA Map
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria,
http://www.fema.gov/national-flood-insurance-program.
The enclosed documents provide additional information regarding this determination. If you have
Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the •
VA 22304-6426. Additional Information about the NFIP is available on our website at
A -
"Rick" F. Sacbibit, P.E., Branch Chief
Services Branch 17-08-0666P 102 -I -A -C
Insurance and Mitigation Administration
Patrick
Engineering
Federal
Page 3 of 6 '
Issue Date: December 15, 2017
-
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
VARTgj
Federal
Emergency Management Agency
Washington, D.C. 20472
44
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
OTHER COMMUNITIES AFFECTED BY THIS REVISION
CID Number: 080264 Name: Town of Windsor, Colorado
AFFECTED MAP PANELS
AFFECTED PORTIONS OF THE FLOOD INSURANCE STUDY REPORT
TYPE: FIRM* NO.: 08123C1482E DATE: January 20, 2016
TYPE: FIRM* NO.: 08123C1501E DATE: January 20, 2016
DATE OF EFFECTIVE FLOOD INSURANCE STUDY: January 20, 2016
PROFILES: 59P -60P, 74P AND 145P
This determination is based on the flood data presently available.
any questions about this document, please contact the FEMA Map
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria,
http://www.fema.qovinational-flood-insurance-procram.
The enclosed documents provide additional information regarding this determination. If you have
Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
VA 22304-6426. Additional Information about the NFIP is available on our website at
"Rick" F. Sacbibit, P.E., Branch Chief
Services Branch 17-08-0666P 102 I -A -C
Insurance and Mitigation Administration
Patrick
Engineering
Federal
Page.4 of 6
'Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
Federal Emergency Management Agency
Washington, D.C. 20472
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
COMMUNITY INFORMATION
APPLICABLE NFIP REGULATIONS/COMMUNITY OBLIGATION
We have made this determination pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (P.L. 93-234) and in accordance
with the National Flood Insurance Act of 1968, as amended (Title XIII of the Housing and Urban Development Act of 1968, P.L. 90-448),
42 U.S.C. 4001-4128, and 44 CFR Part 65. Pursuant to Section 1361 of the National Flood Insurance Act of 1968, as amended,
communities participating in the NFIP are required to adopt and enforce floodplain management regulations that meet or exceed NFIP
criteria. These criteria, including adoption of the FIS report and FIRM, and the modifications made by this LOMR, are the minimum
requirements for continued NFIP participation and do not supersede more stringent State/Commonwealth or local requirements to which
the regulations apply.
NFIP regulations Subparagraph 60.3(b)(7) requires communities to ensure that the flood -carrying capacity within the altered or relocated
portion of any watercourse is maintained. This provision is incorporated into your community's existing floodplain management
ordinances; therefore, responsibility for maintenance of the altered or relocated watercourse, including any related appurtenances such as
bridges, culverts, and other drainage structures, rests with your community. We may request that your community submit a description
and schedule of maintenance activities necessary to ensure this requirement.
COMMUNITY REMINDERS
We based this determination on the 1 -percent -annual -chance flood discharges computed in the FIS for your community without
considering subsequent changes in watershed characteristics that could increase flood discharges. Future development of projects
upstream could cause increased flood discharges, which could cause increased flood hazards. A comprehensive restudy of your
community's flood hazards would consider the cumulative effects of development on flood discharges subsequent to the publication of
the FIS report for your community and could, therefore, establish greater flood hazards in this area.
Your community must regulate all proposed floodplain development and ensure that permits required by Federal and/or
State/Commonwealth law have been obtained. State/Commonwealth or community officials, based on knowledge of local conditions and
in the interest of safety, may set higher standards for construction or may limit development in floodplain areas. If your
State/Commonwealth or community has adopted more restrictive or comprehensive floodplain management criteria, those criteria take
precedence over
the minimum NFIP requirements.
,
We will not print
and distribute this LOMR to primary
users, such as local insurance agents or mortgage lenders; instead, the community
will serve as a repository for the new data. We encourage you to disseminate the information in this LOMR by preparing a news release
for publication in your community's newspaper that describes the revision and explains how your community will provide the data and
help interpret the NFIP maps. In that way, interested persons, such as property owners, insurance agents, and mortgage lenders, can
benefit from, the information.
This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have
any questions about this document, please contact the FEMA Map Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at
http://www.fema.gov/national-flood-insurance-prociram.
41
4/
Patrick "Rick" F. Sacbibit, P.E., Branch Chief
Engineering Services Branch 17-08-0666P 102 I A C
Federal Insurance and Mitigation Administration
Page '5 of 6
Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
y RT
Federal Emergency Management Agency
'
Washington, D.C. 20472
'4rzx s
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
This revision has met our criteria for removing an area from the 1 -percent -annual -chance floodplain to reflect the placement of fill.
However, we encourage you to require that the lowest adjacent grade and lowest floor (including basement) of any structure placed within
the subject area be elevated to or above the Base (1 -percent -annual -chance) Flood Elevation.
We have designated a Consultation Coordination Officer (CCO) to assist your community. The CCO will be the primary liaison between
your community and FEMA. For information regarding your CCO, please contact:
Ms. Jeanine D. Petterson
Director, Mitigation Division
Federal Emergency Management Agency, Region VIII
Denver Federal Center, Building 710
P.O. Box 25267
Denver, CO 80225-0267
(303) 235-4830
STATUS OF THE COMMUNITY NFIP MAPS
We will not physically revise and republish the FIRM and FIS report for your community to reflect the modifications made by this
LOMR at this time. When changes to the previously cited FIRM panel(s) and FIS report warrant physical revision and republication in
the future, we will incorporate the modifications made by this LOMR at that time.
This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have
any questions about this document, please contact the FEMA Map Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at
http://www.fema.ovinational-flood-insurance-preqram.
Patrick
"Rick" F. Sacbibit, P.E., Branch Chief
Engineering Services Branch 17-08-0666P 102 -I -A -C
Federal Insurance and Mitigation Administration
Page 8 of 6 ''
issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
µ Federal Emergency Management Agency
Washington, D.C. 20472
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
PUBLIC NOTIFICATION OF REVISION
A notice of changes will be published in the Federal Register. This information also will be published in your local newspaper on or
about the dates listed below, and through FEMA's Flood Hazard Mapping website at
https://www.floodmaps.fema.gov/fhnvbfe_status/bfe_main.asp
LOCAL NEWSPAPER Name: Greeley Tribune
Dates: December 22, 2017 and December 29, 2017
Within 90 days of the second publication in the local newspaper, any interested party may request that we reconsider this determination.
Any request for reconsideration must be based on scientific or technical data. Therefore, this letter will be effective only after the 90 -day
appeal period has elapsed and we have resolved any appeals that we receive during this appeal period. Until this LOMR is effective, the
revised flood hazard determination presented in this LOMR may be changed.
This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have
any questions about this document, please contact the FEMA Map Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at
http://www.fema.gov/national-flood-insurance-program.
Patrick
Engineering
Federal
"Rick" F. Sacbibit, P.E., Branch Chief
Services Branch 17-08-0666P 102 -I -A -C
Insurance and Mitigation Administration
Federal Emergency Management Agency
Washington, D.C. 20472
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
Mr. Kelly Arnold
Town Manager, Town of Windsor
301 Walnut Street
Windsor, CO 80550
Dear Mr. Arnold:
December 15, 2017
IN REPLY REFER TO:
17-08-0666P
Town of Windsor, CO
080264
Case No.:
Community Name:
Community No.:
Effective Date of
This Revision:
April 30, 2018
The Flood Insurance Study report and Flood Insurance Rate Map for your community have been revised by this
Letter of Map Revision (LOMR). Please use the enclosed annotated map panel(s) revised by this LOMR for
floodplain management purposes and for all flood insurance policies and renewals issued in your community.
Additional documents are enclosed that provide information regarding this LOMR. Please see the List of Enclosures
below to determine which documents are included. Other attachments specific to this request may be included as
referenced in the Determination Document. If you have any questions regarding floodplain management regulations
for your community or the National Flood Insurance Program (NFIP) in general, please contact the Consultation
Coordination Officer for your community. If you have any technical questions regarding this LOMR, please contact
the Director, Mitigation Division of the Department of Homeland Security's Federal Emergency Management
Agency (FEMA) in Denver, Colorado, at (303) 235-4830, or the FEMA Map Information eXchange (FMIX) toll free
at 1-877-336-2627 (1-877-FEMA MAP). Additional information about the NFIP is available on our website at
https://www.fema.gov/national-flood-insurance-program.
Sincerely,
Patrick "Rick" F. Sacbibit, P.E., Branch Chief
Engineering Services Branch
Federal Insurance and Mitigation Administration
List of Enclosures:
Letter of Map Revision Determination Document
Annotated Flood Insurance Rate Map
Annotated Flood Insurance Study Report
cc: The Honorable Julie Cozad
Chair, Weld County
Board of County Commissioners
Mr. Doug Roth, P.E., CFM
Civil Engineer
Town of Windsor
Mr. Tom Parko, Jr., M.A.
Director of Planning Services
Weld County
Mr. Chris Pauley, P.E., CFM
Project Engineer
Anderson Consulting Engineers, Inc.
Page 1 of 6 '
Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
Federal Emergency Management Agency
o Washington, D.C. 20472
LETTER OF MAP REVISION
DETERMINATION DOCUMENT
COMMUNITY AND REVISION INFORMATION
PROJECT DESCRIPTION
BASIS OF REQUEST
COMMUNITY
Town of Windsor
Weld County
Colorado
CHANNELIZATION
DETENTION BASIN
FILL
CULVERT
HYDRAULIC ANALYSIS
UPDATED TOPOGRAPHIC DATA
COMMUNITY NO.: 080264
IDENTIFIER
John Law Floodplain Residential Flood Risk Reduction Project
APPROXIMATE LATITUDE AND LONGITUDE: 40.484, -104.870
SOURCE: USGS QUADRANGLE DATUM: NAD 83
ANNOTATED MAPPING ENCLOSURES
ANNOTATED STUDY ENCLOSURES
TYPE: FIRM* NO.: 08123C1482E DATE: January 20, 2016
TYPE: FIRM" NO.: 08123C1501E DATE: January 20, 2016
DATE OF EFFECTIVE FLOOD INSURANCE STUDY: January 20, 2016
PROFILES: 59P -60P, 74P AND 145P
SUMMARY OF DISCHARGES TABLE: 2
Enclosures reflect changes to flooding sources affected by this revision.
* FIRM - Flood Insurance Rate Map;
FLOODING SOURCE AND REVISED REACH See Page 2 for Additional Flooding Sources
John Law Ditch - From the downstream side of the C and S Railroad to approximately 80 feet downstream of the Great Western Railroad
SUMMARY OF REVISIONS
Flooding Source Effective Flooding Revised Flooding Increases Decreases
John Law Ditch Zone AE Zone AH YES YES
Zone X (shaded) Zone Z (shaded) NONE YES
BFE* BFEs NONE YES
* BFEs - Base Flood Elevations
DETERMINATION
This document provides the determination from the Department of Homeland Security's Federal Emergency Management Agency (FEMA)
regarding a request for a Letter of Map Revision (LOMR) for the area described above. Using the information submitted, we have determined that
a revision to the flood hazards depicted in the Flood Insurance Study (FIS) report and/or National Flood Insurance Program (NFIP) map is
warranted. This document revises the effective NFIP map, as indicated in the attached documentation. Please use the enclosed annotated map
panels revised by this LOMR for floodplain management purposes and for all flood insurance policies and renewals in your community.
This determination is based on the flood data presently available.
any questions about this document, please contact the FEMA Map
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria,
https://www.fema.qmenational-flood-insurance-program.
The enclosed documents provide additional information regarding this determination. If you have
Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
VA 22304-6426. Additional Information about the NFIP is available on our website at
"Rick" F. Sacbibit, P.E., Branch Chief
Services Branch 17-08-0666P 102 -I -A -C
Insurance and Mitigation Administration
Patrick
Engineering
Federal
' Page 2 of 6 '
Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
Emergency Management Agency
Washington, D.C. 20472
Federal
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
OTHER FLOODING SOURCES AFFECTED BY THIS REVISION
FLOODING SOURC AND REVISED REACH
John Law - West Tributary - From the confluence with John Law Ditch to the upstream side of State Highway 19
John Law - SH 392 Overflow - From the confluence with John Law - West Tributary to the divergence from John Law Ditch
SUMMARY OF REVISIONS
Flooding Source Effective Flooding Revised Flooding Increases Decreases
John Law - West Tributary Zone AE Zone AE YES YES
BFEs* BFEs YES YES
John Law - SH 392 Overflow Zone AE Zone AE YES NONE
BFEs BFEs NONE YES
* BFEs - Base Flood Elevations
This determination is based on the flood data presently available.
any questions about this document, please contact the FEMA Map
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria,
https://www.fema.govinational-flood-insurance-program.
The enclosed documents provide additional information regarding this determination. If you have
Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
VA 22304-6426. Additional Information about the NFIP is available on our website at
"Rick" F. Sacbibit, P.E., Branch Chief
Services Branch 17-08-0666P 102 -I -A -C ;
Insurance and Mitigation Administration
Patrick
Engineering
Federal
•
Page 3 of 6
Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
itr
Federal Emergency Management Agency
Washington, D.C. 20472
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
OTHER COMMUNITIES AFFECTED BY THIS REVISION
CID Number: 080266 Name: Weld County, Colorado
AFFECTED MAP PANELS
AFFECTED PORTIONS OF THE FLOOD INSURANCE STUDY REPORT
TYPE: FIRM* NO.: 08123C1482E DATE: January 20, 2016
DATE OF EFFECTIVE FLOOD INSURANCE STUDY: January 20, 2016
TYPE: FIRM* NO.: 08123C1501E DATE: January 20, 2016
PROFILES: 58P -60P, 62P, 74P AND 145P
DELETED PROFILES: 53P AND 61 P
SUMMARY OF DISCHARGES TABLE: 2
This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have
any questions about this document, please contact the FEMA Map Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at
https://www.fema.govinational-flood-insurance-program.
Patrick
"Rick" F. Sacbibit, P.E., Branch Chief -
Engineering Services Branch 17-08-0666P 02 -I -A -C
Federal Insurance and Mitigation Administration
' Page 4 of 6 4
Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
ff Federal
Emergency Management Agency
Washington, D.C. 20472
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
COMMUNITY INFORMATION
APPLICABLE NFIP REGULATIONS/COMMUNITY OBLIGATION
We have made this determination pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (P.L. 93-234) and in accordance
with the National Flood Insurance Act of 1968, as amended (Title XIII of the Housing and Urban Development Act of 1968, P.L. 90-448),
42 U.S.C. 4001-4128, and 44 CFR Part 65. Pursuant to Section 1361 of the National Flood Insurance Act of 1968, as amended,
communities participating in the NFIP are required to adopt and enforce floodplain management regulations that meet or exceed NFIP
criteria. These criteria, including adoption of the FIS report and FIRM, and the modifications made by this LOMR, are the minimum
requirements for continued NFIP participation and do not supersede more stringent State/Commonwealth or local requirements to which
the regulations apply.
NFIP regulations Subparagraph 60.3(b)(7) requires communities to ensure that the flood -carrying capacity within the altered or relocated
portion of any watercourse is maintained. This provision is incorporated into your community's existing floodplain management
ordinances; therefore, responsibility for maintenance of the altered or relocated watercourse, including any related appurtenances such as
bridges, culverts, and other drainage structures, rests with your community. We may request that your community submit a description
and schedule of maintenance activities necessary to ensure this requirement.
COMMUNITY REMINDERS
We based this determination on the 1 -percent -annual -chance flood discharges computed in the FIS for your community without
considering subsequent changes in watershed characteristics that could increase flood discharges. Future development of projects
upstream could cause increased flood discharges, which could cause increased flood hazards. A comprehensive restudy of your
community's flood hazards would consider the cumulative effects of development on flood discharges subsequent to the publication of
the FIS report for your community and could, therefore, establish greater flood hazards in this area.
Your community must regulate all proposed floodplain development and ensure that permits required by Federal and/or
State/Commonwealth law have been obtained. State/Commonwealth or community officials, based on knowledge of local conditions and
in the interest of safety, may set higher standards for construction or may limit development in floodplain areas. If your
State/Commonwealth or community has adopted more restrictive or comprehensive floodplain management criteria, those criteria take
precedence over the minimum NFIP requirements.
We will not print and distribute this LOMR to primary users, such as local insurance agents or mortgage lenders; instead, the community
will serve as a repository for the new data. We encourage you to disseminate the information in this LOMR by preparing a news release
for publication in your community's newspaper that describes the revision and explains how your community will provide the data and
help interpret the NFIP maps. In that way, interested persons, such as property owners, insurance agents, and mortgage lenders, can
benefit from the information.
This determination is based on the flood data presently available.
any questions about this document, please contact the FEMA Map
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria,
https://www.fema.qovInational-flood-insurance-program.
The enclosed documents provide additional information regarding this determination. If you have
Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
VA 22304-6426. Additional Information about the NFIP is available on our website at
"Rick" F. Sacbibit, P.E., Branch Chief
Services Branch 17-08-0666P 102 -I -A -C
Insurance and Mitigation Administration
Patrick
Engineering
Federal
Page 5 of 6 a
Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
Federal Emergency Management Agency
Washington, D.C. 20472
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
This revision has met our criteria for removing an area from the 1 -percent -annual -chance floodplain to reflect the placement of fill.
However, we encourage you to require that the lowest adjacent grade and lowest floor (including basement) of any structure placed within
the subject area be elevated to or above the Base (1 -percent -annual -chance) Flood Elevation.
We have designated a Consultation Coordination Officer (CCO) to assist your community. The CCO will be the primary liaison between
your community and FEMA. For information regarding your CCO, please contact:
Ms. Jeanine D. Petterson
Director, Mitigation Division
Federal Emergency Management Agency, Region VIII
Denver Federal Center, Building 710
P.O. Box 25267
Denver, CO 80225-0267
(303) 235-4830
STATUS OF THE COMMUNITY NFIP MAPS
We will not physically revise and republish the FIRM and FIS report for your community to reflect the modifications made by this
LOMR at this time. When changes to the previously cited FIRM panel(s) and FIS report warrant physical revision and republication in
the future, we will incorporate the modifications made by this LOMR at that time.
This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have
any questions about this document, please contact the FEMA Map Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at
https://www.fema.govinational-flood-insurance-program.
Patrick
Engineering
Federal
"Rick" F. Sacbibit, P.E., Branch Chief
Services Branch
Insurance and Mitigation Administration 17-08-0666P 102 -I -A -C
Page 6 of 6
Issue Date: December 15, 2017
Effective Date: April 30, 2018
Case No.: 17-08-0666P
LOMR-APP
Emergency Management Agency
Y Federal
Washington, D.C. 20472
�vn
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
PUBLIC NOTIFICATION OF REVISION
A notice of changes will be published in the Federal Register. This information also will be published in your local newspaper on or
about the dates listed below, and through FEMA's Flood Hazard Mapping website at
https://www.floodm.aps.fema.gov/fhm/bfe_status/bfe main.asp
LOCAL NEWSPAPER Name: Greeley Tribune
Dates: December 22, 2017 and December 29, 2017
Within 90 days of the second publication in the local newspaper, any interested party may request that we reconsider this determination.
Any request for reconsideration must be based on scientific or technical data. Therefore, this letter will be effective only after the 90 -day
appeal period has elapsed and we have resolved any appeals that we receive during this appeal period. Until this LOMR is effective, the
revised flood hazard determination presented in this LOMR may be changed.
This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have
any questions about this document, please contact the FEMA Map Information eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the
LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at
https://www.fema.govdnational-flood-insurance-program.
Patrick
Engineering
Federal
"Rick" F. Sacbibit, P.E., Branch Chief
Services Branch 17-08-0666P 102 -I -A -C
Insurance and Mitigation Administration
REVISED
DATA
Flooding Source and Location
Table 2 - Summary of Discharges (Continued)
Drainage Area
(Square Miles)
Peak Discharges (cubic feet per second)
10 -Percent 2 -Percent 1 -Percent
Annual Chance Annual Chance Annual Chance
0.2 -Percent
Annual Chance
Consolidated John Law •Ditch -
At Confluence with John Law Ditch
At River Station 14C51
J
J
J
J
900
732
J
Eaton Draw
At Confluence with Cache La Poudre River
At Eaton
42.1
23.2
2,000
1,540
3,650
2,700
4,470
3,300
6,900
5,050
Greeley Canal No. 2
Just Downstream of State Highway 392
Just Downstream of Divergence from John
Law Ditch
John Law Ditch
Upstream of C&S Railroad
Downstream of John Law — West Tributary
Downstream of State Highway 392
Upstream of Greeley Canal No. 2
40.2
40.2
38.3
732
3,626
1,4402
4,327
1,9352
4,4002
4,443
Upstream at Law Reservoir
John Law Ditch — Colorado and Southern
Railroad Flow Path
At River Station 565
At River Station 4370
At River Station 5675
At River Station 6330
John Law Ditch— FR Energy Flow Path
At River Station 2054
John Law Ditch - FRE East Flow Path
At River Station 493
At River Station 1301
John Law Ditch— FRE SE Flow Path
At Confluence with John Law Ditch — GWD
Flow Path
REVISED
DATA
'Data Not Available ♦,
2Discharges decrease moving downstream due to split flows I
34.1
-_t
__t
509
1,344
2,188
2,927
51
197
53
111
REVISED TO
REFLECT LOMR
EFFECTIVE: April 30, 2018
Table 2 - Summary of Discharges (Continued)
Flooding Source and Location
Drainage Area
(Square Miles)
Peak Discharges (cubic feet per second)
10 -Percent 2 -Percent 1 -Percent 0.2 -Percent
Annual Chance Annual Chance Annual Chance Annual Chance
John Law - SH 392 Overflow
Just Downstream of Divergence from
John Law Ditch
2,460
John Law Ditch — WCR 23 Flow Path
At Confluence with Cache La Poudre River
At River Station 3285
At River Station 3464
At River Station 3939
At River Station 4441
At River Station 4901
At River Station 5818
At River Station 7564
At River Station 8173
At River Station 9327
At River Station 9746
7.3.
6.1.
1
96.
101
163
181
235
521
802
855
805
834
305
•
REVISED
DATA
John Law — West Tributary
At Nankeen Drive
Upstream of State Highway 392
Downstream of County Road 19
2,391
665
153
John Law Ditch— Whitney Flow Path
At Confluence with John Law Ditch — WCR 23
Flow Path
Little Thompson River
At Milliken
Pumpkin Ridge Split Flow Path
At Confluence with Sheep Draw
'Data Not Available
200 1,630 3,600
763 2,307
144
4,800
3,606
8,400
6,579
REVISED TO
REFLECT LOMR
EFFECTIVE: April 30, 2018
Table 2 - Summary of Discharges (Continued)
Flooding Source:and Location
St. Vrain Creek
At State Highway 66
At Approximately 1,000 feet downstream of
Weld. County Road 13
St. Vrain Creek — Existing Lakes
At Confluence with St. Vrain Creek
'Data Not Available
Drainage Area
(Square Miles)
Peak Discharges (cubic feet per second)
10 -Percent 2 -Percent 1 -Percent 0.2 -Percent
Annual Chance Annual Chance Annual Chance Annual Chance
16,700
5,950 12,850 16,700
41,960
REVISED TO
REFLECT LOMR
EFFECTIVE: April 30, 2018
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REFLECT
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FLOOD
PROFII_
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April
30,
2018
741
CM
WELD
COUNTY,
CO
JOHN
LAW
AND
INCORPORATED
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392 OVERFLOW
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STUDY
MAIN ST
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'BORLINGTIN
NORTHERN RAILROAD
•
•
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080266
Areas gulvert
GARDEN DR
ZONE AE
TECHNOLOGY CIR
Ili Si
ACADEMY CT
t -4>r..,,4 p . '
Culvert
Weld County
Unincorporated Areas
080266
ZONE
AE
verf'
JOINS PANEL 1484
3170000 FT
NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATED WITHIN TOWNSHIP 6 NORTH AND RANGE 67 WEST.
�o KI bJl
4781.3 (D)
4780.0
JOINS PANEL 1501
John Law
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4778
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v.-
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SPECIAL FLOOD
HAZARD AREAS
Without Base Flood Elevation (BFE)
With BFE ar Depth 7,ure AE, AO. AN. vF AR
Regulatory Floodway
OTHER AREAS OF
FLOOD HAZARD
"77
0.2 % Annual Chance Flood Hazard, Areas
of 1% annual chance flood with average
depth less than one foot or with drainage
areas of less than one square mile
Future Conditions 1% Annual
Chance Flood Hazard
Area with Reduced Flood Risk due to Levee
See Notes.
SCALE
N
Map Projection:
Universal Transverse MenatorNAD 1983 LTM Zone :3N
Western Hemisphere; Vertical Datum: NAVD 88
1 inch - 500 feet
16,000
0
250 500
0
62.5 125
1.000
Feet
Meters
250
nsurance Program
NATIONAL FLOOD INSURANCE PROGRAM
FLOOD INSURANCE PATE MAP
WELD COUNTY, COLORADO
and Incorporated Areas
PANEL 1482 OF 2250
Panel Contains:
"CD COMMUNITY
0
O
Il
CD
a
tra
ct3
WELD COUNTY
WINDSOR, TOWN OF
NUMBER
080266
080264
PANEL SUFFIX
1481
1482
REVISED TO
REFLECT LOMR
EFFECTIVE: April 30, 2018
VERSION NUMBER
1.1.1.0
MAP NUMBER
08123C1482E
EFFECTIVE DATE
JANUARY 20, 2016
NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATED
WITHIN TOWNSHIPR6iNORTHtAND PANGS? WEST•
4482000►1 N
4 790
John Law
Ditch
John Law - SH 392
Overflow
1% -ANNUAL -CHANCE
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4481 000m N
John Law
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CV
CO
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C
LLJ
z
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O
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080264 4-79:
15
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4799.2
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4793.8
4793.1
4792.3
4790.7
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1;70 11 �'u111
PROFILE BASELINE"
John' till( [MCI? - K(OOOak L /'uu/h
ZONE AE
PROFILE BASELINE
SPECIAL FLOOD
HAZARD AREAS
OTHER AREAS OF
FLOOD HAZARD
SCALE
LIMIT
OF STUDY
1 v County
r i or ted Areas
080266
Without Base Flood Elevation (BFE)
/one A. V Aq.,
Regulatory Floodway
0.2 % Annual Chance Flood Hazard, Areas
of 1% annual chance flood with average
depth less than one foot or with drainage
areas of less than one square mile
aro Future Conditions 1% Annual
Chance Flood Hazard
Area with Reduced Flood Risk due to Levee
See Notes.
Map Prolectlon:
Universal Transverse MercatorNAD 1983 LTM Zone 13N
Western Hemisphere: Vertical Datum: NAVD 88
1 inch - 500 feet 16,000
250 500
62.5 125
1,00C
Feet
Meters
250
NATIONAL FLOOD INSURANCE PROGRAM
FLOOn INSURANCE PATE MAP
WELD COUNTY, COLORADO
and Incorporated Areas
PANEL 1501 or 2250
Panel Contains:
COMMUNITY NUMBER PANEL SUFFIX
SEVERANCE, TOWN OF 080317 1501 E
WELD COUNTY
080266 1501
WINDSOR. TOWN OF 080264 1501
REVISED TO
REFLECT LOMR
EFFECTIVE: April 30, 2018
VERSION NUMBER
1.1.1.0
MAP NUMBER
08123C1501E
EFFECTIVE DATE
JANUARY 20, 2016
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