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Home My WebLink About20200474f Federal Emergency Management Agency Washington, D.C. 20472 RECEIVED August 31, 2021 CERTIFIED MAIL RETURN RECEIPT REQUESTED The Honorable Steve Moreno Chairman, Weld County Board of Commissioners P. O. Box 758 Greeley, CO 80631 Dear Mr. Moreno: SEP O 1 2021 IN REPLY REFER TO: WELD COUNTY Case No.: 21-08-009cpMMISSI0NERS Follows Conditional Case No.: 19-08-0969R Community Name: Weld County, CO Community No.: 080266 FIRM Panel Affected: 08123C 1503E, 08123C1504E 116 In a Letter of Map Revision (LOMR) dated April 14, 2021, you were notified of proposed flood hazard determinations affecting the Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) report for Weld County, CO. These determinations were for John Law Ditch - WCR 23 Flow Path - from the confluence with John Law Ditch - GWD Flow Path to the divergence from John Law Ditch - Kodak L Path. The 90 -day appeal period that was initiated on April 30, 2021, when the Department of Homeland Security's Federal Emergency Management Agency (FEMA) published a notice of proposed Flood Hazard Determinations in The Greeley Tribune has elapsed. FNMA received no valid requests for changes to the modified flood hazard information. Therefore, the modified flood hazard information for your community that became effective on August 30, 2021, remains valid and revises the FIRM and FIS report that were in effect prior to that date. The modifications are pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (Public Law 93-234) and are in accordance with the National Flood Insurance Act of 1968, as amended (Title XIII of the Housing and Urban Development Act of 1968, Public Law 90-448), 42 U.S.C. 4001-4128, and 44 CFR Part 65. The community number(s) and suffix code(s) are unaffected by this revision. The community number and appropriate suffix code as shown above will be used by the National Flood Insurance Program (NFIP) for all flood insurance policies and renewals issued for your community. FEMA has developed criteria for floodplain management as required under the above -mentioned Acts of 1968 and 1973. To continue participation in the NFIP, your community must use the modified flood hazard information to carry out the floodplain management regulations for the NFIP. The modified flood hazard information will also be used to calculate the appropriate flood insurance premium rates for all new buildings and their contents and for the second layer of insurance on existing buildings and their contents. If you have any questions regarding the necessary floodplain management measures for your community or the NFIP in general, please contact the Mitigation Division Director, FEMA Region VIII, in Denver, Colorado, either by telephone at (303) 235-4830, or in writing at Denver Federal Center, Building 710, Box 25267, Denver, Colorado, 80225. Go PA1Kun , Co`+lor)S 04 /15/21 «:oetiCRR), PUTP),cA(8cA(rt) Pw(5M/ER/CH/DD) O11/O9/2I 202.0" ©H -'y t 'r 2 If you have any questions regarding the LOMR, the proposed flood hazard determinations, or mapping issues in general, please call the FEMA Map Information eXchange, toll free, at (877) 336-2627 (877- FEMA MAP). Sincerely, Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration cc: The Honorable Paul Rennemeyer Mayor, Town of Windsor Mr. Tom Parko Floodplain Administrator Weld County Mr. Omar P. Herrera, P.E. Deputy Director of Engineering Town of Windsor Mr. Dean Brown GWIP, LLC Mr. Mark Cevaal, P.E. Senior Project Manager/Associate Principal Redland Consulting Group, Inc. Federal Emergency Management Agency Washington, D.C. 20472 CERTIFIED MAIL RETURN RECEIPT REQUESTED The Honorable Paul Rennemeyer Mayor, Town of Windsor 301 Walnut Street Windsor, CO 80550 Dear Mayor Rennemeyer: April 14, 2021 IN REPLY REFER TO: Case No.: 21-08-0099P Follows Conditional Case No.: Community Name: Community No.: Effective Date of This Revision: RECEIVED APR 2 0 2021 COMMISSIONERS 19-08-0969R Town of Windsor, CO 080264 August 30, 2021 The Flood Insurance Study (FIS) report and Flood Insurance Rate Map (FIRM) for your community have been revised by this Letter of Map Revision (LOMR). Please use the enclosed annotated map panels 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 1-877-336-2627 (1-877-FEMA MAP). Additional information about the NFIP is available on our website at hill jt=,\_ C C''„1 20\ ilt,0, : I 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 ec: The Honorable Steve Moreno Chairman, Weld County Board of Commissioners Mr. Omar P. Herrera, P.E. Deputy Director of Engineering Town of Windsor Mr. Tom Parko Floodplain Administrator Weld County Common;covt- zonS O4 /22/2 I Mr. Dean Brown GWIP, LLC Mr. Mark Cevaal, P.E. Senior Project Manager/Associate Principal Redland Consulting Group, Inc. C C : O E t-t(RIk), PLFrP) CA(gc/xn), pw(gn/Ea/O4/oo1 O 4/12421, X020 - 0'-1711 Page 1 of 6 Issue Date: April 14, 2521 Effective Date: August 30, 2021 Case No.: 21-08-0099P LOMB -APP Follows Conditional Case No.: 19-08-0969R c.,' o °l� Federal Emergency Management Agency x>> .� °S , 4 Washington, D.C. 20472 c� 'IN SAGO LETTER OF MAP REVISION DETERMINATION DOCUMENT COMMUNITY AND REVISION INFORMATION PROJECT DESCRIPTION BASIS OF REQUEST COMMUNITY Town of Windsor Weld County Colorado CHANNELIZATION CULVERT FILL BASEMAP CHANGES HYDRAULIC ANALYSIS UPDATED TOPOGRAPHIC DATA COMMUNITY NO.: 080264 IDENTIFIER GWIP LOMR APPROXIMATE LATITUDE AND LONGITUDE: 40.457, -104.857 SOURCE: Other DATUM: NAD 83 ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES TYPE: FIRM* NO.: 08123C1484E DATE: January 20, 2016 TYPE: FIRM NO.: 08123C1503E DATE: January 20, 2016 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: January 20, 2016 PROFILES: 59P, 63P, 64P (REMOVED), 67P, 72P, 73P (REMOVED), 75P, AND 148P 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 approximately 720 feet downstream of Eastman Park Drive to the downstream side of Eastman Park Drive John Law Ditch - WCR 23 Flow Path - from the confluence with John Law Ditch - GWD Flow Path to the divergence from John Law Ditch - Kodak L Path SUMMARY OF REVISIONS Flooding Source Effective Flooding Revised Flooding Increases Decreases John Law Ditch BFEs* BFEs YES NONE Zone AE Zone AE YES NONE Zone A Zone A YES NONE John Law Ditch — WCR 23 Flow Path BFEs BFEs YES YES 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. The questions about this document, please contact the FEMA Mapping and Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA https://www.fema.qov/flood-insurance. enclosed documents provide additional information regarding this determination. If you have any Insurance eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC 22304-6426. Additional Information about the NFIP is available on our website at "Rick" F. Sacbibit, P.E., Branch Chief Services Branch Insurance and Mitigation Administration 21-08-0099P 102 -I -A -C Patrick Engineering Federal Page 2 of 6 Issue Date: April 14, 2U21 Effective Date: August 30, 2021 Case No.: 21-08-0099P LOMB -APP Emergency Management Agency Washington, D.C. 20472 O�4A�\�� GY �'�► iN °� Federal o :• 4.� 4 x 42v S�G`y LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) OTHER FLOODING SOURCES AFFECTED BY THIS REVISION FLOODING SOURCES AND REVISED REACHES John Law Ditch - WCR 23 Flow Path - from the confluence with John Law Ditch - GWD Flow Path to the divergence from John Law Ditch - Kodak L Path John Law Ditch - WCR 23 Lower Flow Path - from the confluence with John Law Ditch - GWD Flow Path to approximately 1,210 feet upstream of the confluence with John Law Ditch - GWD Flow Path John Law Ditch - Whitney Flow Path - from the confluence with John Law Ditch - FRE SE Flow Path to approximately 2,100 feet upstream of the confluence with John Law Ditch - FRE SE Flow Path John Law Ditch - GWD Flow Path — from approximately 2,000 feet upstream of the confluence with Cache La Poudre River to the confluence of John Law Ditch - WCR 23 Flow Path John Law Ditch - FRE East Flow Path - from the confluence with John Law Ditch - FRE SE Flow Path to the divergence from John Law Ditch - WCR 23 Flow Path SUMMARY OF REVISIONS Flooding Source Effective Flooding Revised Flooding Increases Decreases John Law Ditch - WCR 23 Flow Path Zone AO Removed NONE YES Zone AE Removed NONE YES Zone A Removed NONE YES Depths Removed NONE YES BFEs* Removed NONE YES John Law Ditch - WCR 23 Lower Flow Path BFEs BFEs NONE YES Zone AE Zone AE YES YES John Law Ditch - Whitney Flow Path BFEs BFEs NONE YES Zone AE Zone AE YES YES John Law Ditch - GWD Flow Path BFEs BFEs NONE YES Zone AE Zone AE YES YES John Law Ditch - FRE East Flow Path BFEs Removed NONE YES Zone AE Removed NONE YES * BFEs - Base Flood Elevations This determination is based on the flood data presently available. The questions about this document, please contact the FEMA Mapping and Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA httos://www.fema.00v/flood-insurance. enclosed documents provide additional information regarding this determination. If you have any Insurance eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC 22304-6426. Additional Information about the NFIP is available on our website at "Rick" F. Sacbibit, P.E., Branch Chief Services Branch Insurance and Mitigation Administration 21-08-0099P 102-I A -C Patrick Engineering Federal Page 3 of 6 Issue Date: April 14, 2021 Effective Date: August 30, 2021 Case No.: 21-08-0099P 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: 080266 Name: Weld County, Colorado AFFECTED MAP PANELS AFFECTED PORTIONS OF THE FLOOD INSURANCE STUDY REPORT TYPE: FIRM NO.: 08123C1503E DATE: January 20, 2016 TYPE: FIRM NO.: 08123C1504E DATE: January 20, 2016 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: January 20, 2016 PROFILES: 72P AND 73P (REMOVED) 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 Mapping and Insurance 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.00v/flood-insurance. Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 21-08-0099P 102 -I -A -C Page 4 of 6 Issue Date: April 14, 2021 Effective Date: August 30, 2021 Case No.: 21-08-0099P LOMB -APP �rA r �a o °� Federal w .tt'- �.w>..�t Emergency Management Agency Washington, D.C. 20472 t�ND sv 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 LOMB, 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 Mapping and Insurance 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. qov/flood-insurance. 6:?1 1 Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 21-08-0099P 102 -I -A -C Page 5 of 6 Issue Date: April 14, 2621 Effective Date: August 30, 2021 Case No.: 21-08-0099P LOMB -APP c° Federal , o as, w ,:y Emergency Management Agency Washington, D.C. 20472 rAND OP 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. Boa 25267 Denver, CO 80225-0267 (303)235-4830 STATUS OF THE COMMUNITY NFIP MAPS We are processing a revised FIRM and FIS report for Weld County in our countywide format; therefore, we will not physically revise and republish the FIRM and FIS report for your community to incorporate the modifications made by this LOMR at this time. Preliminary copies of the countywide FIRM and FIS report, which present information from the effective FIRMS and FIS reports for your community and other incorporated communities in Weld County, were submitted to your community for review on September 17, 2020. We will incorporate the modifications made by this LOMR into the countywide FIRM and FIS report before they become effective. 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 1-877-336-2627 (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.00v/flood-insurance. -41 Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 21-08-0099P 102 -I -A -C Page 6 of 6 Issue Date: April 14, 2621 Effective Date: August 30, 2021 Case No.: 21-08-0099P LOMR-APP AA T`r Emergency Management Agency Washington, D.C. 20472 O� T Federal °� �vND S"�G�� 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/fhm/bfe_status/bfe_main.asp LOCAL NEWSPAPER Name: Greeley Tribune Dates: April 23, 2021 and April 30, 2021 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 questions about this document, please contact the FEMA Mapping and Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA https://www.fema.gov/flood-insurance. enclosed documents provide additional information regarding this determination. If you have any Insurance eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC 22304-6426. Additional Information about the NFIP is available on our website at "Rick" F. Sacbibit, P.E., Branch Chief Services Branch Insurance and Mitigation Administration 21-08-0099P 102 -I -A -C Patrick Engineering Federal Federal Emergency Management Agency CERTIFIED MAIL RETURN RECEIPT REQUESTED The Honorable Steve Moreno Chairman, Weld County Board of Commissioners P. O. Box 758 Greeley, CO 80631 Dear Mr. Moreno: Washington, D.C. 20472 April 14, 2021 IN REPLY REFER TO: Case No.: Follows Conditional Case No.: Community Name: Community No.: Effective Date of This Revision: 21-08-0099P 19-08-0969R Weld County, CO 080266 August 30, 2021 The Flood Insurance Study (FIS) report and Flood Insurance Rate Map (FIRM) for your community have been revised by this Letter of Map Revision (LOMB). Please use the enclosed annotated map panels 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 1-877-336-2627 (1-877-FEMA MAP). Additional information about the NFIP is available on our website at litt •—: 1100,1-i n Lirdoc . 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 Paul Rennemeyer Mayor, Town of Windsor Mr. Tom Parko Floodplain Administrator Weld County Mr. Omar P. Herrera, P.E. Deputy Director of Engineering Town of Windsor Mr. Dean Brown GWIP, LLC Mr. Mark Cevaal, P.E. Senior Project Manager/Associate Principal Redland Consulting Group, Inc. Page 1 of 5 Issue Date: April 14, 2021 Effective Date: August 30, 2021 Case No.: 21-08-0099P LOMR-APP QtiQARI� W `� Follows Conditional Case No.: 19-08-0969R >. 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 CULVERT FILL BASE MAP CHANGES HYDRAULIC ANALYSIS UPDATED TOPOGRAPHIC DATA COMMUNITY NO.: 080266 IDENTIFIER GWIP LOMR APPROXIMATE LATITUDE AND LONG TUDE: 40.457, -104.857 SOURCE: Other DATUM: NAD 83 ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES TYPE: FIRM" NO.: 08123C1503E DATE: January 20, 2016 TYPE: FIRM NO.: 08123C1504E DATE: January 20, 2016 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: January 20, 2016 PROFILES: 72P AND 73P (REMOVED) 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 John Law Ditch - WCR 23 Flow Path - from the confluence with John Law Ditch - GWD Flow Path to the divergence from John Law Ditch - Kodak L Path SUMMARY OF REVISIONS Flooding Source Effective Flooding Revised Flooding Increases Decreases John Law Ditch - WCR 23 Flow Path BFEs' BFEs NONE YES Zone AE Zone AE NONE YES Zone A Removed NONE YES Depths Removed NONE YES BFEs Removed NONE YES Zone AE Removed NONE YES Zone AO Removed 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 (LOMB) 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. 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 1-877-336-2627 (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 httos://www.fema. qov/flood-insurance. Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 21-08-0099P 102 -D -A Page 2 of 5 Issue Date: April 94, 2021 Effective Date: August 30, 2021 Case No.: 21-08-0099P LOMB -APP Emergency Management Agency a Federal a, Washington, D.C. 20472 �L4ND St C' 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.: 08123C1484E DATE: January 20, 2016 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: January 20, 2016 TYPE: FIRM NO.: 08123C1503E DATE: January 20, 2016 PROFILES: 59P, 63P, 64P (REMOVED), 67P, 72P, 73P (REMOVED), 75P, AND 148P 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 Mapping and Insurance 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.gov/flood-insurance. V � Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 21-08-0099P 102 -D -A Page 3 of 5 Issue Date: April 14, 2021 Effective Date: August 30, 2021 Case No.: 21-08-0099P LOMR-APP i.'`'. � O � M Federal Emergency Management Agency °a, °` ��% Washington, D.C. 20472 �i4AID c� 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 F1S 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 LOMB 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 1-877-336-2627 (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.gov/flood-insurance. Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 21-08-0099P 102 D A Page 4 of 5 Issue Date: April 14, 2021 Effective Date: August 30, 2021 Case No.: 21-08-0099P LOMR-APP Emergency Management Agency Q�QA/ 4, cl 0 Federal O y r r k= � �lAND Washington, D.C. 20472 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 NF1P MAPS We are processing a revised FIRM and FIS report for Weld County in our countywide format; therefore, we will not physically revise and republish the FIRM and FIS report for your community to incorporate the modifications made by this LOMR at this time. Preliminary copies of the countywide FIRM and FIS report, which present information from the effective FIRMS and FIS reports for your community and incorporated communities in Weld County, were submitted to your community for review on September 17, 2020. We will incorporate the modifications made by this LOMB into the countywide FIRM and FIS report before they become effective. 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 1-877-336-2627 (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.00v/flood-insurance. Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 21-08-0099P 102 -D -A Page 5 of 5 Issue Date:'April'14, 2021 Effective Date: August 30, 2021 Case No.: 21-08-0099P LOMB -APP �pART,t�� a _ Federal Emergency Management Agency ° �` Washington, D.C. 20472 {�Nn sc� 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/fhm/bfe_status/bfe_main.asp LOCAL NEWSPAPER Name: Greeley Tribune Dates: April 23, 2021 and April 30, 2021 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 questions about this document, please contact the FEMA Mapping and Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA https://www.fema.4ovlftood-insurance. enclosed documents provide additional information regarding this determination. If you have any Insurance eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC 22304-6426. Additional Information about the NFIP is available on our website at 144/ e—", "Rick" F. Sacbibit, P.E., Branch Chief Services Branch Insurance and Mitigation Administration 21-08-0099P 102 -D -A Patrick Engineering Federal Flooding Source and Location DATA REVISED BY LOMR EFFECTIVE APRIL 30, 2018 Drainage Area (Square Miles) • Table 2 - Summary of Discharges (Continued) Peak Discharges (cubic feet per second) 10 -Percent 2 -Percent 1 -Percent 0.2 -Percent Annual Chance Annual Chance Annual Chance Annual Chance Consolidated John Law Diteh At Conflucncc with John Law Ditch At Rivcr Station 14651 J J _J i 900 732 J J Eaton Draw At Confluence with Cache La Poudre River At Eaton 23.2 42.1 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 73' 3,626 1,440'- 4,327 1,935'4,400 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 SE Flow Path At Confluence with John Law Ditch — GWD Flow Path 'Data Not Available Discharges decrease moving downstream due to split flows 34.1 DATA REVISED BY t- LOMR EFFECTIVE APRIL 30, 2018 509 1,344 2,188 1,927 51 1H REVISED TO REFLECT LOMR EFFECTIVE: August 30, 2021 DATA REVISED BY LOMR EFFECTIVE APRIL 30, 2018 REVISED DATA Table 2 — Summary of Discharges (Continued) Flooding Source and Location John Law Ditch — FRE SW Flow Path At Confluence with John Law Ditch — Kodak L Path Peak Discharges(efs) Drainage Area ]0 -Percent 2 -Percent 1 -Percent 0.2 -Percent (Square Miles) Annual Chance Annual Chance Annual Chance Annual Chance 137 John Law Ditch — GWD Flow Path At River Station 2412 At River Station 4457 255 139 i John Law Ditch — Kodak L Path At Confluence with Cache La Poudre River At River Station 3240 At River Station 3695 At River Station 7045 At River Station 8235 At River Station 8255 At River Station 9790 At River Station 9920 At River Station 10475 At River Station 12100 At River Station 12800 John Law Ditch — Kodak Road Split Flow At Confluence with John Law Ditch — Railroad Flow Path John Law Ditch — Railroad Flow Path At Confluence with John Law Ditch — Kodak L Path At River Station 2645 At River Station 2985 At River Station 3514 At River Station 3515 At River Station 3825 At River Station 5163 'Data Not Available 2,043 1,907 1,588 1,538 2,036 2,045 2,120 2,649 2,987 2,698 1,586 498 318 368 419 561 63 104 76 REVISED TO REFLECT LOMR EFFECTIVE: August 30, 2021 REVISED DATA 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 Annual Chance Annual Chance Annual Chance 0.2 -Percent Annual Chance John Law — SH 392 Overflow Just Downstream of Divergence fiom John Law Ditch 2,460 John Law Ditch — WCR 23 Flow Path At Confluence with John Law Ditch - GWD Flow Path At River Station 9652 At River Station 10057 John Law Ditch — WCR 23 Lower Flow Path At Confluence with John Law Ditch - GWD Flow Path 89 89 18 50 REVISED DATA DATA REVISED BY LOMR EFFECTIVE APRIL 30, 2018 John Law — West Tributary At Nankeen Drive Upstream of State Highway 392 Downstream of County Road 19 7.3 6.1 2,391 665 153 John Law Ditch — Whitney Flow Path At Confluence with John Law Ditch - FRE SE Flow Path 143 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 4,800 3,606 8,400 6,579 REVISED TO REFLECT LOMR EFFECTIVE: August 30, 2021 ELEVATION IN FEET (NAVD) 2JNV1Sf 0 Wdae:11S CO Cs) O O CO O O CO La O O CO O O O GO O O O O Z o m m m D CO O G W M O (a) O O Z -n r C Z -' m o0 * o _A O D n Z m iv r W D o o O C O X m X N G co m o X o CO Co O O CA) -00 O a w O O .a CO O O CJ1 C.O -a N rn O .a N O O a rn O1 .a rn O1 FEDERAL EMERGENCY MANAGEMENT AGENCY -a O N N O a v (31 -a N oo O -a v Co O .a O3 cn -a Co CJI FLOOD PROFILES .a v co O -a -.4 O O REVISED TO REFLECT LOMR EFFECTIVE: August 30, 2021 WELD COUNTY, CO AND INCORPORATED AREAS JOHN LAW DITCH ELEVATION IN FEET (NAVD) a v7 a cn 0 a 0 a cn v, a Cil v, a rn 0 a rn 0 FEDERAL EMERGENCY MANAGEMENT AGENCY WELD COUNTY, CO AND INCORPORATED AREAS FLOOD PROFILES REVISED TO REFLECT LOMR EFFECTIVE: August 30, 2021 JOHN LAW DITCH - FR ENERGY FLOW PATH a a Ui a 0 EDERAL EMERGENCY MANAGEMENT AGENCY WELD COUNTY, CO AND INCORPORATED AREAS ELEVATION IN FEET (NAVD) a 01 v, a rn 0 REVISED TO FLOOD PROFILES REFLECT LOMR EFFECTIVE: August 30, 2021 JOHN LAW DITCH - FRE EAST FLOW PATH ELEVATION IN FEET (NAVD) 3JNb1SIO WVall_S N 0 0 0 N O 0 0 0 0 C.31 O O 0 0 -p 0 z O m m m c O < o m o O o O z m r C m z (n n � m p O C7 n = C3) m o r- )7> p O C 73 C) mj o O) C0 O -4- I i D I I -tom v w v, 1 I I i 1 • _: I ' 1 i I--i--i i • j I I i r m W Oa)CV D c � --I T --t) 7' rn D r - >m tri C� w -I!— - I I I 1 !_ 1 O I I I I r- -• t- - ! , _y I 1 _ • 1 i I• __ T - T I I � I 1-1___ t t - 4- I < I i , 1 I CONFLUENCE OF JOHN LAW DITCH - FRE SE FLOW PATH I I t--1 --+- 1- .I - p_ _, -_, I ?- i I -T-.• _. 1 -I L I RAILROAD-- I - `--3- - • I-- I I 1 I i { ' I I I,! I I I DIVERGENCE FROM JOHN LAW DITCH WCR 23 FLOW PATH t-! --i- i -+- 1----1 i-- ! ! I t �-I- I I I ! I I -- - -I-1 • i I --t- a NOIlb001 NOLLODS SSO2jO C139 WV9?:ilS 4001d 30NVHO 1WINNV %6 r- 0 z 0 I • _T. I • i I: Y - I I 1 I : 1 I I I _ {y I , i ! I I I {_ I t 1 , I I I I , I I I I --t +- -! i--- r I I 1 , I I 1 I --1 }- . I I I i I i ! i I I ' I { I _ 1 I I I II I -P W Cn -P O FEDERAL EMERGENCY MANAGEMENT AGENCY WELD COUNTY, CO AND INCORPORATED AREAS CJ1 U1 O CPI C11 -P C3) O FLOOD PROFILES ! i 1 `I _. 1 -! 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V, A99 With BFE or Depth ZoneAlf..40, Aft VE. AR 409 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 Future Conditions 1% Annual Chance Flood Hazard Area with Reduced Flood Risk due to Levee See Notes...me Imagery Source NA1P 201. Map Projection: Univers:at Transverse MercatorNAD 1983 UTM Zone 13N we_ 1,• d.:rtical Datum: NAVD 88 1 Mich = 500 feet d WEI w 62 5 125 1 000 Feet Meters 250 WELD COUNTY, COLORADO and Incorporated Areas PANEL 1484 or 2250 Panel Contains: COMMUNITY WELD COUNTY WINDSOR, TOWN OF NUMBER 080266 080264 PANEL SUFFIX 1484 1484 REVISED TO REFLECT LOMR EFFECTIVE: August 30, 2021 !VERSION NUMBER 1.1.1.0 MAP NUMBER 08123C1484E EFFECTIVE DATE JANUARY 20. 2016 i NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATED WITHIN TOWNSHIP 6 NORTH. ZONE E City of Greeley 080184 SPECIAL FLOOD HAZARD AREAS OTHER AREAS OF FLOOD HAZARD SCALE ZONE A Without Base Flood Elevation (BFE) With BFE or Depth Zone AE, A0, AN, VE, •,k Zwlo A, A;19 Regulatory Floodway 0.2 % Annual Chance Flood Hazard, Areas of 1°/0 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.,„„ A Imagery Source NAIP 2015 Map Projection: Universal Transverse MercatorNAD 1983 LiTM Zone 1.3N Western Hemispher,, V(•,! 1 inch = 500 feet Q w 62 5 125 Meters 250 1 000 Feet NATIONAL FLOOD INSURANCE PROGRAM Ft nn I) INSURANCE RATE MAP WELD COUNTY, COLORADO and Incorporated Areas PANEL 1504 or 2250 Panel Contains - COMMUNITY GREELEY. GIP( OF WELD COUNTY WINDSOR, TOWN OF NUMBER 080184 080266 080264 PANEL 1504 150.3 1504 SUFFIX c REVISED TO REFLECT LOMR EFFECTIVE: August 30, 2021 VERSION NUMBER tit° MAP NUMBER 08123C1504E EFFECTIVE DATE JANUARY 20, 2016 Oversized Map Annotated Flood Insurance Rate Map Please contact the Federal Emergency Management Agency (https: / /www.fema.gov/flood- insurance) to view and request map) Case No. 19-08-0969R Community No. 080264 Revision: August 30, 2021 Federal Emergency Management Agency CERTIFIED MAIL RETURN RECEIPT REQUESTED The Honorable Mike Freeman Chairman, Weld County Board of Commissioners P. O. Box 758 Greeley, CO 80632 Dear Mr. Freeman: Washington, D.C. 20472 January 23, 2020 IN REPLY REFER TO: Case No.: 19-08-0969R Community Name: Weld County, CO Community No.: 080266 104 RECEIVED JAN 3 1 2020 WELD COUNTY COMMISSIONERS We are providing our comments with the enclosed Conditional Letter of Map Revision (CLOMR) on a proposed project within your community that, if constructed as proposed, could revise the effective Flood Insurance Study (FIS) report and Flood Insurance Rate Map (FIRM) for your community. If you have any questions regarding the floodplain management regulations for your community, the National Flood Insurance Program (NFIP) in general, or technical questions regarding this CLOMR, please contact the Director, Mitigation Division of the Federal Emergency Management Agency (FEMA) Regional Office in Denver, 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-tlood-insurance-program. Sincerely, Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration Enclosure: Conditional Letter of Map Revision Comment Document cc: The Honorable Kristie Melendez Mayor, Town of Windsor Mr. Tom Parko Floodplain Administrator Weld County Mr. Omar Herrara, P.E. Engineering Manager Town of Windsor CoMAW ft ;CO•f;0nS 02 S /2.o Mr. Dean A. Brown GWIP, LLC Mr. Mark Cevaal, P.E. Senior Project Manager Redland Consulting Group, Inc. CC: oati MO, CAOICIPCM) PW(SM), PL(TP) Ol /31 /.2o 2020-0474 Page 1 of 6 Ilssue Date: January 23, 2020 'Case No.: 19-08-0969R I CLOMR-APP OO,A/ rIIM `�£I e; G ffi Federal Emergency '>r 1, , Washington, Management Agency D.C. 20472 F=OND CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT COMMUNITY INFORMATION PROPOSED PROJECT DESCRIPTION BASIS OF CONDITIONAL REQUEST COMMUNITY Weld County Colorado (Unincorporated Areas) CULVERT CHANNELIZATION FILL BASE MAP CHANGES HYDRAULIC ANALYSIS UPDATED TOPOGRAPHIC DATA COMMUNITY NO.: 080266 IDENTIFIER GWIP CLOMR APPROXIMATE LATITUDE AND LONGITUDE: 40.457, -104.857 SOURCE: USGS QUADRANGLE DATUM: NAD 83 AFFECTED MAP PANELS TYPE: FIRM* NO.:0E123C1503E DATE: 1/20/2016 TYPE: FIRM NO.: 0E123C1504E DATE: 1/20/2016 * FIRM - Flood Insurance Rate Map FLOODING SOURCE AND REACH DESCRIPTION John Law Ditch - WCR 23 Flow Path — from the confluence with Jahn Law Ditch - GWD Flow Path to the divergence from John Law Ditch - Kodak L Path PROPOSED PROJECT DESCRIPTION Flooding Source Proposed Project Location of Proposed Project John Law Ditch - WCR 23 Flow Path New 3' x 7' RCBCCulvert Approximately 1,160 feet downstream of the divergence from John Law Ditch - Kodak L Path From approximately 1,210 feet downstream of the divergence from John Channelization Law Ditch - Kodak L Path to the divergence from John Law Ditch - Kodak L Path From approximately 1,190 feet downstream of the divergence from John Fill Placement Law Ditch - Kodak L Path to approximately 450 feet downstream of the divergence from John Law Ditch - Kodak L Path SUMMARY OF IMPACTS TO FLOOD HAZARD DATA Flooding Source Effective Flooding Proposed Flooding Increases Decreases John Law Ditch - WCR 23 Flow Path Zone AE Zone AE None Yes BFEs* BFEs None Yes Zone AO Removed None Yes Depth Removed None Yes Zone AE Removed None Yes BFEs Removed None Yes Zone A Removed None Yes *BFEs - Base (1 -percent -annual -chance) Flood Elevations COMMENT This document provides the Federal Emergency Management Agency's (FEMA's) comment regarding a request for a CLOMR for the project described above. This document is not a final determination; it only provides our comment on the proposed project in relation to the flood hazard information shown on the effective National Flood Insurance Program (NFIP) map. We reviewed the submitted data and the data used to prepare the effective flood hazard information for your community and determined that the proposed project meets the minimum floodplain management criteria of the NFIP. Your community is responsible for approving all floodplain development and for ensuring that all permits required by Federal or State/Commonwealth law have been received. State/Commonwealth, county, and community officials, based an their knowledge of local conditions and in the interest of safety, may set higher standards for construction in the Special Flood Hazard Area (SFHA), the area subject to inundation by the base flood). If the State/Commonwealth, county, or community has adopted more restrictive or comprehensive floodplain management criteria, these criteria take precedence over the minimum NFIP criteria. This comment is based toll free at 1-877-336-2627 Additional Information on the flood data presently available. If you have any questions (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, about the NFIP is available on the FEMA website at https://www.fema.gov/national-flood-insurance-program. about this document, please contact the FEMA Map Information eXchange (FMIX) 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Chief Administration 19-08-0969R 104 -41 Patrick "Rick -7F. Sacbibit, P.E., Branch Engineering Services Branch Federal Insurance and Mitigation Page 2 of 6 'issue Date: January 23, 2020 'Case No.: 19-08-0969R I CLOMR-APP Ay AR IAT �,-----.�i> �t 11:.''`Federal Emergency x --, ` ~ " Washington, Management Agency g Y g g Y D.C. 20472 '44\D 5 . CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT (CONTINUED) OTHER COMMUNITIES AFFECTED BY THIS CONDITIONAL REQUEST CID Number: 080264 Name: Town of Windsor, Colorado AFFECTED MAP PANELS TYPE: FIRM NO.: 08123C1484E DATE: 1/20/2016 TYPE: FIRM NO.: 08'23C1503E DATE: 1/20/2016 This comment is based on the flocd data presently available. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) 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 the FEMA website at https://www.fema.gov/national-flood-insurance-program. �� Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 19-08-0969R 104 Page 3 of 6 Ilssue Date: January 23, 2020 'Case No.: 19-08-0969R I CLOMR-APP pE,----"I•"t4,,, `u, °�` -., Federal Emergency Management Agency Washington, D.C. 20472 r c " A vD sti. CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT (CONTINUED) COMMUNITY INFORMATION To determine the changes in flood hazards that will be caused by the proposed project, we compared the hydraulic modeling reflecting the proposed project (referred to as the proposed conditions model) to the hydraulic modeling used to prepare the Flood Insurance Study (FIS) (referred to as the effective model). If the effective model does not provide enough detail to evaluate the effects of the proposed project, an existing conditions model must be developed to provide this detail. This existing conditions model is then compared to the effective model and the proposed conditions model to differentiate the increases or decreases in flood hazards caused by more detailed modeling from the increases or decreases in flood hazards that will be caused by the proposed project. The table below shows the changes in the BFEs: BFE Comparison Table Flooding Source: John Law Ditch - WCR 23 Flow Path BFE Change (feet) Location of maximum change Existing vs. Effective Maximum increase None N/A Maximum decrease 1.2 Just downstream of the divergence from John Law Ditch - Kodak L Path Proposed vs. Existing Maximum increase None N/A Maximum decrease 0.8 Just downstream of the divergence from John Law Ditch - Kodak L Path Proposed vs. Effective Maximum increase None N/A Maximum decrease 2.0 Just downstream of the divergence from John Law Ditch - Kodak L Path 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. This comment is based on the flood data presently available. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) 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 the FEMA website at https://www.fema.gov/national-flood-insurance-program. :41.1 Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 19-08-0969R 104 Page 4 of 6 Ilssue Date: January 23, 2020 'Case No.: 19-08-0969R I CLOMR-APP R '��yIA""r\£1L c., � '0 Federal Emergency Management Agency ,. -2� " �` Washington, D.C. 20472 L ivo s,- CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT (CONTINUED) COMMUNITY INFORMATION (CONTINUED) DATA REQUIRED FOR FOLLOW-UP LOMR Upon completion of the project, your community must submit the data listed below and request that we make a final determination on revising the effective FIRM and FIS report. If the project is built as proposed and the data below are received, a revision to the FIRM and FIS report would be warranted. • Detailed application and certification forms must be used for requesting final revisions to the maps. Therefore, when the map revision request for the area covered by this letter is submitted, Form 1, entitled "Overview and Concurrence Form," must be included. A copy of this form may be accessed at https://www.fema.gov/media-library/assets/documents/1343. • The detailed application and certification forms listed below may be required if as -built conditions differ from the proposed plans. If required, please submit new forms, which may be accessed at https://www.fema.gov/media-library/assets/documents/1343, or annotated copies of the previously submitted forms showing the revised information. Form 2, entitled "Riverine Hydrology and Hydraulics Form." Hydraulic analyses for as -built conditions of the base flood must be submitted with Form 2. Form 3, entitled "Riverine Structures Form." • A certified topographic work map showing the revised and effective base floodplain boundaries. Please ensure that the revised information ties in with the current effective information at the downstream and upstream ends of the revised reach. • An annotated copy of the FIRM, at the scale of the effective FIRM, that shows the revised base floodplain boundary delineations shown on the submitted work map and how they tie-in to the base floodplain boundary delineations shown on the current effective FIRM at the downstream and upstream ends of the revised reach. • As -built plans, certified by a registered Professional Engineer, of all proposed project elements. • Documentation of the individual legal notices sent to property owners who will be affected by any widening or shifting of the base floodplain and/or any BFE increases along John Law Ditch - WCR 23 Flow Path. This comment is based on the flood data presently available. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) 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 the FEMA website at https://www.fema.gov/national-flood-insurance-program. .44f Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 19 -OS -0969R 104 Page 5 of 6 Ilssue Date: January 23, 2020 'Case No.: 19-06-0969R I CLOMR-APP /—`s �-4 ' C-)^, w Federal Emergency Management Agency r ' v�1.. Washington, D.C. 20472 LgND SG. CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT (CONTINUED) COMMUNITY INFORMATION (CONTINUED) DATA REQUIRED FOR FOLLOW-UP LOMR (continued) • FEMA's fee schedule for reviewing and processing requests for conditional and final modifications to published flood information and maps may be accessed at https://www.fema.gov/forms-documents-and-software/flood-map-related-fees. The fee at the time of the map revision submittal must be received before we can begin processing the request. Payment of this fee can be made through a check or money order, made payable in U.S. funds to the National Flood Insurance Program, or by credit card (Visa or MasterCard only). Please either forward the payment, along with the revision application, to the following address: LOMC Clearinghouse Attention: LOMR Manager 3601 Eisenhower Avenue, Suite 500 Alexandria, Virginia 22304-6426 or submit the LOMR using the Online LOMC portal at: https://hazards.fema.gov/femaportal/onlinelomc/signin After receiving appropriate documentation to show that the project has been completed, FEMA will initiate a revision to the FIRM and FIS report. Because the flood hazard information (i.e., base flood elevations, base flood depths, SFHAs, zone designations, and/or regulatory floodways) will change as a result of the project, a 90 -day appeal period will be initiated for the revision, during which community officials and interested persons may appeal the revised flood hazard information based on scientific or technical data. This comment is based on the flood data presently available. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) 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 the FEMA website at https://www.fema.gov/national-flood-insurance-program. .-41/ Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 19-08-0969R 104 Page 6 of 6 Ilssue Date: January 23, 2020 'Case No.: 19-08-0969R I CLOMR-APP tigA.RT,� _--*0 �� U� # G Federal Emergency Management Agency °�� 4~' Washington, D.C. 20472 ,4't9 SC6 CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT (CONTINUED) COMMUNITY INFORMATION (CONTINUED) COMMUNITY REMINDERS 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 P. 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 This comment is based on the flood data presently available. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) 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 the FEMA website at https://www.fema.gov/national-flood-insurance-program. d411. Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 19-08-0969R 104 Hello