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Home My WebLink About20243110.tiffFederal Emergency Management Agency Washington, D.C. 20472 RECEIVED NOV 15 2024 CERTIFIED MAIL RETURN RECEIPT REQUESTED Kevin Ross Chair, Weld County Board of Commissioners 1150 O Street Greeley, CO 80632 Dear Chair Ross: October 28, 2024 IN REPLY REFER TO: Case No.: 24-08-0570P Community Name: Weld County, Colorado Community No.: 080266 Effective Date of This Revision: October 28, 2024 WELD COUNTY COMMISSIONERS 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 enclosures 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 Mapping and Insurance eXchange toll free at 1-877-FEMA MAP (1-877-336-2627). Additional information about the NFIP is available on our website at https://www.fema.gov/flood-insurance. Sincerely, 6z1_,./41 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 Don Conyac Mayor, Town of Firestone The Honorable Tracie Crites Mayor, Town of Frederick Dawn Anderson Floodplain Administrator Weld County CoKHtre,..Go--tionS «/2 7 /24 CC:PL(OE/MW /ER/DA/DA /KVA 0EK (RR), (.../DD) 11/25/24 Kevin Houck, P.E., CFM Chief, Watershed and Flood Protection Section Colorado Water Conservation Board Caitlin McDaniel, P.E., CFM Floodplain Mapping Coordinator Colorado Water Conservation Board Marta Blanco Castano, GISP, CFM Flood Mapping Program Assistant Colorado Water Conservation Board 2024-3110 Page 1 of 5 I Issue Date: October 28, 2024 I Effe,tive Date: October 28, 2024 I Case No.: 24-08-0570P I LOMR-APP Federal Emergency Management Agency �� Washington, D.C. 20472 't'1 At SSC''' LETTER OF MAP REVISION DETERMINATION DOCUMENT COMMUNITY AND REVISION INFORMATION PROJECT DESCRIPTION BASIS OF REQUEST COMMUNITY Weld County Colorado (Unincorporated Areas) NO PROJECT REISSUANCE COMMUNITY NO.: 080266 IDENTIFIER Reissue Case 23-08-0123P APPROXIMATE LATITUDE AND LONGITUDE: 40.147, -104.970 SOURCE: USGS QUADRANGLE DATUM: NAD 83 ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES TYPE: FIRM* NO.: 08123C1890F DATE: September 26, 2024 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: September 26, 2024 SUMMARY OF DISCHARGES TABLE: 9 Enclosures reflect changes to flooding sources affected by this revision. * FIRM — Flood Insurance Rate Map FLOODING SOURCE(S) AND REVISED REACH(ES) Godding Hollow — From approximately 4,510 feet downstream of Sable Avenue to approximately 5,360 feet upstream of Sable Avenue. SUMMARY OF REVISIONS This Letter of Map Revision (LOMR) is a reissuance of a LOMR (Case No. 23-08-0123P) effective May 20, 2024, which revised the Special Flood Hazard Area (SFHA), the area subject to inundation by the base (1 -percent -annual -chance) flood, BFEs* along Godding Hollow. This LOMR reissues the May 20, 2024, LOMR based on the new effective information shown on the Flood Insurance Study (FIS) report for Weld County, Colorado, and Incorporated Areas, effective September 26, 2024. This LOMR does not revise the effective SFHA boundaries or BFEs from the May 20, 2024, LOMR along the revised reach. * BFEs — Base (1 -percent -annual -chance) Flood Elevations DETERMINATION This document provides the determination from the Department of Homeland Security's Federal Emergency Management Agency (FEMA) regarding a request fora LOMR for the area described above. Using the information submitted, we have determined that a revision to the flood hazards depicted in the 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. The enclosed documents about this document, please contact the FEMA Mapping and Insurance eXchange toll free Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional httos://www.femaxiov/flood-insurance. provide additional information regarding this determination. If you have any questions at 1-877-FEMA MAP (1-877-336-2627) or by letter addressed to the LOMC information about the NFIP is available on our website at P.E., Branch Chief Branch Mitigation Administration 24-08-0570P 102-D Patrick "Rick" F. Sacbibit, Engineering Services Federal Insurance and Page 2 of 5 I Issue Date: October 28, 2024 I Effective Date: October 28, 2024 I Case No.: 24-08-0570P I LOMB -APP OtiVj ,'rl a' Federal Emergency Management Agency , t Washington, D.C. 20472 LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) OTHER COMMUNITIES AFFECTED BY THIS REVISION CID Number: 080241 Name: Town of Firestone, Colorado AFFECTED MAP PANELS AFFECTED PORTIONS OF THE FLOOD INSURANCE STUDY REPORT TYPE FIRM NO.: 08123C1890F DATE: September 26, 2024 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: September 26, 2024 PROFILE(S): 1371', 138P SUMMARY OF DISCHARGES TABLE: 9 CID Number: 080244 Name: Town of Frederick, Colorado AFFECTED MAP PANELS AFFECTED PORTIONS OF THE FLOOD INSURANCE STUDY REPORT TYPE: FIRM NO.: 08123C1890F DATE: September 26, 2024 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: September 26,2024 PROFILE(S): 138P SUMMARY OF DISCHARGES TABLE: 9 This determination is based on the flood data presently available. The enclosed documents about this document, please contact the FEMA Mapping and Insurance eXchange toll Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional httos://www.fema.gov/flood-insurance. provide additional information regarding this determination. If you have any questions free at 1-877-FEMA MAP (1-877-336-2627) or by letter addressed to the LOMC information about the NFIP is available on our website at P.E., Branch Chief Branch and Mitigation Administration 24-08-0570P 102-D Patrick "Rick" F. Sacbibit, Engineering Services Federal Insurance Page 3 of 5 I Issue Date: October 28, 2024 I Effective Date: October 28, 2024 I Case No.: 24-08-0570P I LOMR-APP ,c yA�ant Federal Emergency Management Agency O _ Fs '! $, Washington, D.C. 20472 Vi4isc. s 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 (PL. 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. 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 Mapping and Insurance eXchange toll free at 1-877-FEMA MAP (1-877-336-2627) 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 httos://www.fema.00v/flood-insurance. Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 24-08-0570P 102-D Page 4 of 5 I Issue Date: October 28, 2024 l Effective Date: October 28, 2024 I Case No.: 24-08-0570P I LOMR-APP Federal Emergency Management Agency Washington, D.C. 20472 LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) COMMUNITY INFORMATION (CONTINUED) 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: 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 Mapping and Insurance eXchange toll free at 1-877-FEMA MAP (1-877-336-2627) 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 httos://www.femmoviflood-insurance. i Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 24-08-0570P 102-D Page 5 of 5 I Issue Date: October 28, 2024 I Effective Date: October 28, 2024 I Case No.: 24-08-0570P I LOMR-APP b Federal Emergency Management Agency Washington, D.C. 20472 119O stiG'. LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) PUBLIC NOTIFICATION OF REVISION The flood hazard information along Godding Hollow, as presented in this LOMR, became effective on May 20, 2024, following a 90 -day appeal period for Case No. 23-08-0123P. Therefore, we will not republish the flood hazard information in the local newspaper. This revision is effective as of the date of this letter. Any request to review or alter this determination should be made within 30 days and must be based on scientific data. 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 Mapping and Insurance eXchange toll free at 1-877-FEMA MAP (1-877-336-2627) 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.coviflood-insurance. Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 24-08-0570P 102-D REVISED TO REFLECT LOMR Table 9: Summary of Discharges EFFECTIVE: October 28, 2024 Revised Data Floodina Source Location Drainage Area (Square Miles) Peak Discharge (cfs) 10% Annual Chance 4% Annual Chance 2% Annual Chance 1% Annual Chance 1% Annual Chance Plus 0.2% Annual Chance Godding Hollow Approximately 5,230 feet upstream of Sable Avenue 16.8 4,700 Greeley Canal No. 2 Just Downstream of State Highway 382 731 * Greeley Canal No. 2 Just Downstream of Divergence from John Law Ditch * * 3,626 * John Law Ditch Upstream of C&S Railroad 40.2 * * 1,4401 John Law Ditch Downstream of John Law — West Tributary 40.2 * 4,327 * John Law Ditch Downstream of State Highway 392 1,9351 John Law Ditch Upstream of Greeley Canal No. 2 38.3 * * * 4,4001 * John Law Ditch Upstream at Law Reservoir 34.1 * * 4,443 * John Law Ditch — Colorado and Southern Railroad Flow Path At River Station 565 * * * 509 * * John Law Ditch — Colorado and Southern Railroad Flow Path At River Station 4370 * * * 1,344 * *Data not Available 'Discharges decrease moving downstream due to split flows 44 Hello