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Home My WebLink About20240092.tiffRECEIVED Federal Emergency Management AgencyMAY 2 9 2024 CERTIFIED MAIL RETURN RECEIPT REQUESTED Mike Freeman Chair, Weld County Board of Commissioners P. O. Box 758 Greeley, CO 80632 Dear Mike Freeman: Washington, D.C. 20472 WELD COUNTY May 21, 2024 COMMISSIONERS IN REPLY REFER TO: Case No.: 23-08-0123P Follows Conditional Case No.: 96-08-335R Community Name: Weld County, CO Community No.: 080266 FIRM Panel Affected: 08123C1890E 116 In a Letter of Map Revision (LOMR) dated December 29, 2023, 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 Godding Hollow - From approximately 4,510 feet downstream of Sable Avenue to approximately 5,230 feet upstream of Sable Avenue. The 90 -day appeal period that was initiated on January 19, 2024, 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. FEMA 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 May 20, 2024, 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. 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. Co MIA n : Ca.-Ho/15 cc .ogM (RR), PL(ER/MNZDA), Pw(c.i/DD) 10 Z - ooa2 o6/Io/0-j O6/06/214 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 Tracie Crites Mayor, Town of Frederick The Honorable Drew Peterson Mayor, Town of Firestone Tom Parko Director of Planning Services Weld County Terri Fead, P.E., CFM Floodplain Mapping Coordinator Colorado Water Conservation Board Zackery Roberson Stormwater Engineer Town of Frederick Matt Wiederspahn Town Engineer Town of Firestone Kevin Houck, P.E., CFM Chief, Watershed and Flood Protection Section Colorado Water Conservation Board Marta Blanco Castano, GISP, CFM Flood Mapping Program Assistant Colorado Water Conservation Board Amanda O'Connor, P.E., PMP President Engineering and Entitlement Solutions Federal Emergency Management Agency CERTIFIED MAIL RETURN RECEIPT REQUESTED Mike Freeman Chair, Board of Commissioners Weld County P. O. Box 758 Greeley, CO 80632 Dear Mike Freeman: Washington, D.C. 20472 December 29, 2023 IN REPLY REFER TO: Case No.: 23-08-0123P Follows Conditional Case No.: 96-08-335R Community Name: Weld County, CO Community No.: 080266 Effective Date of This Revision: May 20, 2024 RECEIVED JAN 1 0 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 which 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 Mapping and Insurance Information eXchange 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/flood-insurance. 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 Tracie Crites Mayor, Town of Frederick The Honorable Drew Peterson Mayor, Town of Firestone Ms. Terri Fead, P.E., CFM Floodplain Mapping Coordinator Colorado Water Conservation Board Zackery Roberson Stormwater Engineer Town of Frederick Tom Parko Director of Planning Services Matt Wiederspahn Weld County Town Engineer Co tAMU Ga t i O n S Town of Firestone 01/17/2q CC:oEM(RR),PL(nR/MN/DA), Pn(ccuPD) of/it/24 2024-0092 Mr. KevinHouck, P.E., CFM Chief, Watershed and Flood Protection Section Colorado Water Conservation Board Marta Blanco Castano, GISP, CFM Flood Mapping Program Assistant Colorado Water Conservation Board Amanda O'Connor, P.E., PMP President Engineering and Entitlement Solutions Page 1 of 5 Issue Date: December 29, 2023 I Effective Date: May 20, 2024 I Case No.: 23-08-0123P I LOMR-APP Follows Conditional Case No.: 96-08-0335R 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) BRIDGE CHANNELIZATION FILL GRADING HYDROLOGIC ANALYSIS HYDRAULIC ANALYSIS UPDATED TOPOGRAPHIC DATA COMMUNITY NO.: 080266 IDENTIFIER Godding Hollow LOMR APPROXIMATE LATITUDE & LONGITUDE: 40.147, -104.970 SOURCE: USGS QUADRANGLE DATUM: NAD 83 ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES TYPE: FIRM* NO.: 08123C1890E DATE: January 20, 2016 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: November 30, 2023 SUMMARY OF DISCHARGES TABLE 9 Enclosures reflect changes to flooding sources affected by this revision. * FIRM - Flood Insurance Rate Map FLOODING SOURCE AND REVISED REACH Godding Hollow - From approximately 4,510 feet downstream of Sable Avenue to approximately 5,230 feet upstream of Sable Avenue SUMMARY OF REVISIONS Flooding Source Effective Flooding Revised Flooding Increases Decreases Godding Hollow No BFEs* BFEs YES NONE Zone A 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 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 L0MC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at https://www.fema.goviflood-insurance. Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 23-08-0123P 102 -I -A -C Page 2 of 5 Issue Date: December 29, 2023 I Effective Date: May 20, 2024 Case No.: 23-08-0123P I LOMR-APP Federal Emergency Management Agency e Washington, D.C. 20472 nvn s� . 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.: 08123C1890E DATE: January 20, 2016 DATE OF EFFECTIVE FLOOD INSURANCE STUDY : November 30, 2023 PROFILE(S): 137P, 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.: 08123C1890E DATE: January 20, 2016 DATE OF EFFECTIVE FLOOD INSURANCE STUDY : November 30, 2023 PROFILE(S): 137P SUMMARY OF DISCHARGES TABLE: 9 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 L0MC 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 23-08-0123P 102 -I -A -C Page 3 of 5 Issue Date: December 29, 2023 I Effective Date: May 20, 2024 Case No.: 23-08-0123P LOMR-APP So 's 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 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 23-08-0123P 102 -I -A -C Page 4 of 5 Issue Date: December 29, 2023 I Effective Date: May 20, 2024 I Case No.: 23-08-0123P I LOMR-APP ° Federal Emergency Management Agency o Washington, D.C. 20472 vn sF 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 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 23-08-0123P 102 -I -A -C Page 5 of 5 Issue Date: December 29, 2023 I Effective Date: May 20, 2024 I Case No.: 23-08-0123P I LOMR-APP 9- 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 hops:/i svww. floodmaps. fema.gov/fhmlbfe_statuslbfe_main.asp LOCAL NEWSPAPER Name: Greeley Tribune Dates: January 12, 2024 and January 19, 2024 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 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. .ter rp^ Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 23-08-0123P 102 -I -A -C Table 2 — Summary of Discharges (Continued) Peak Discharges (cfs) Flooding Source and Location Consolidated John Law Ditch At Confluence with John Law Ditch At River Station 14651 Eaton Draw At Confluence with Cache La Poudre River At Eaton Drainage Area 10 -Percent 2 -Percent 1 -Percent 0.2 -Percent (Square Miles) Annual Annual Chance Annum Chance Annual Chance Chance 42.1 2,000 3,650 23.2 1,540 2,700 900 732 4,470 3,300 6,900 5,050 Godding Hollow Upstream of Weld County Road 8 16.8 Greeley Canal No. 2 Just Downstream of State Highway 382 Revised Just Downstream of Divergence from John Data Law Ditch John Law Ditch Upstream of C&S Railroad 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 40.2 34.1 4,700 555 1,050 3,948 4,443 509 1,344 2,188 2,927 51 197 53 111 REVISED TO REFLECTLOMR EFFECTIVE: May 20, 2024 'Data Not Available 4910 4, 910 r 20, 202L 4,900 4, 900 Q 2 g o0 D (pww O >u-� CO crrtw in co4,890 4,890 O J w J 0 O C EL O Z _ 4,880 O -' 4,880 0 ° 0 0 O -� O _ _ LL o > Q ? 4,870 4,870 I - 11.1 L1.1 --- �' ION IN r �� r .� �� 4,860 4,850 >- 4,850 Z w Q �o< U G w 4,840 w ›-- o 4,840 Q LEGEND F- w z z f- * 0.2% ANNUAL CHANCE FLOOD* I g D o O 2 °/0 O 1 ANNUAL CHANCE FLOOD 4,830 * 2% ANNUAL CHANCE FLOOD' w CD O O o w J Z W W O * 10% ANNUAL CHANCE FLOOD* z Q STREAM BED Cr D E F w CROSS SECTION LOCATION O A w a_ 4,820 12,300 12,800 13,300 13,800 14,300 14,800 15,300 15,800 16,300 16,800 17,300 17,800 18,300 18,800 STREAM DISTANCE IN FEET ABOVE THE CONFLUENCE WITH ST. CREEK VRAIN 1 3 7 P " DATA NOT AVAILABLE 4,930 4,930 in Y N O N o Ni 4,920 O 4,920 5 4 F I WO O O . J LiJ UI - 01 CC Luc) cn LL LL I1_ >wU ��w O CO Z Z 4,910 O O 4,910 O J H I- lL _ -J 0 O f 11 (D 4,900 Z 0 4,900 0 Z o O a > Q ? 4,890 4 4,890 I w_ ---------- IL z ....- z �--� - _ O 4,880 Lid 4,880 J LL! 4,870 4,870 Z w Q 0 a w U cc W >- 4, 860 p 4,860 Q LEGEND � Z z * 0.2% ANNUAL CHANCE FLOOD' § g D U O 2 O 1% ANNUAL CHANCE FLOOD Z W 4 850 * 2% ANNUAL CHANCE FLOOD' O O O o W J z W w CZ * 10% ANNUAL CHANCE FLOOD` J z Q 0\\\< f", STREAM BED *C H W mCROSS SECTION LOCATION Q 4,840 u_ 18,800 19,300 19,800 20,300 20,800 21,300 21,800 22,300 22,800 23,300 23,800 24,300 24,800 25,300 STREAM DISTANCE IN FEET ABOVE THE CONFLUENCE WITH ST. VRAIN CREEK 138F • DATA NOT AVAILABLE Weld -County nincor porated -Ar}eas 08026674 Y I 11 •T 1-25 FRONTAGE RD • ' 1 -POT -ANNUAL - CHANGE FLOOD DISCHARGE CONTAINED IN ,,CULVERT .Culvert si Culvert'''" Cull - rt 4 Culvert. 48672 4870.0 ZONE A iti r 4. TIMBERLI aV E ASPEN' � ;tv 1 r TITANS - ' �; ., rASHWOOD ar CT'_ AUDR Sip -SABLE' BLVD ulvert--.�... Culvert 4 refer, WA 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 „ teX Future Conditions 1% Annual Chance Flood Hazard Area with Reduced Flood Risk due to Levee See Notes.;:n SCALE N Imagery Source' NAIP 2015 Map Projection: Universal Transverse MercatorNAD 1983 UTM Zone 13N Western Hemisphere: Vertical Datum: NAVD 88 1 inch = 1,000 feet 112.000 C 0 500 125 250 1,000 2.000 Feet Meters 500 nsurance Program O LL CD C .o co NATIONAL FLOOD INSURANCE PROGRAM FLOOD INSURANCE RATE MAF WELD COUNTY, COLORADO and Incorporated Areas PANEL 1890 OF 2250 (SEE MAP INDEX FOR FIRM PANEL LAYOUT) Panel Contains: COMMUNITY NUMBER PANEL SUFFIX FIRESTONE TOWN OF 080241 FREDERICK TOWN OF 080244 MEAD TOWN OF 080218 WELD COUNTY 080266 REVISED TO REFLECT LOMR EFFECTIVE: May 20, 2024 1890 E 1890 E 1890 E 1890 VERSION NUMBER 1.1.1.0 MAP NUMBER 08123C1890E EFFECTIVE DATE JANUARY 20. 2016 Hello