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Home My WebLink About20130120c N VW) \cahc- o Federal Emergency Management Agency CERTIFIED MAIL RETURN RECEIPT REQUESTED The Honorable Sean Conway Chairman, Weld County Board of Commissioners P.O. Box 758 Greeley, CO 80632 Dear Mr. Conway: Washington, D.C. 20472 December 20, 2012 IN REPLY REFER TO: Case No.: Community Name: Community No.: Effective Date of This Revision: 12-08-0745P Weld County, CO 080266 May 3, 2013 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 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 http://www.fema.govinfip. Sincerely, Lr Erin E. Cobb, CFM, Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration List of Enclosures: Letter of Map Revision Determination Document Annotated Flood Insurance Rate Map Annotated Flood Insurance Study Report cc: Mr. Clay Kimmi, P.E., CFM Drainage & Floodplain Engineer Weld County For: Luis Rodriguez, P.E., Chief Engineering Management Branch Federal Insurance and Mitigation Administration Mr. Lynn Mayer Shults L.G. Everist, Incorporated Mr. Aaron K. Asquith, P.E. Senior Project Engineer II McLaughlin Water Engineers A Division of Merrick and Company I /4()Cc:: U ft1 )� 2013-0120 ' Pagel of 4 Issue Date: December 20, 2012 Effective Date: May 3, 2013 Case No.: 12-08-0745P LOMR-APP jEPe 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) NO PROJECT FLOODWAY HYDRAULIC ANALYSIS NEW TOPOGRAPHIC DATA COMMUNITY NO.: 080266 IDENTIFIER St Vrain Creek at LG Everist Property APPROXIMATE LATITUDE & LONGITUDE: 40.190, -104.920 SOURCE: USGS QUADRANGLE DATUM: NAD 83 ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES TYPE: FIRM' NO.: 0802660855C DATE: September 28, 1982 DATE OF EFFECTIVE FLOOD INSURANCE STUDY. September 22, 1999 PROFILE(S): 89P FLOODWAY DATA TABLE: 2 SUMMARY OF DISCHARGES TABLE: 1 Enclosures reflect changes to flooding sources affected by this revision. * FIRM - Flood Insurance Rate Map; " FBFM - Flood Boundary and Floodway Map, "' FHBM - Flood Hazard Boundary Map FLOODING SOURCE(S) & REVISED REACH(ES) St. Vrain Creek - from approximately 2,660 feet to approximately 10,690 feet upstream of State Highway 66 SUMMARY OF REVISIONS Flooding Source Effective Flooding Revised Flooding Increases Decreases St, Vrain Creek Zone A Zone AE NONE YES No BFEs' BFEs YES NONE No Floodway Floodway YES NONE ' 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 Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA 22304-4605. Additional Information about the NFIP is available on our website at http://www.fema.govibusinessintip. • Erin E. Cobb, CFM, Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration 132942 PT202.02.BKR. 12080745P.H2O 102 -I -A -C Page 2 *of 4 Issue Date: December 20, 2012 Effective Date: May 3, 2013 Case No.: 12-08-0745P LOMR-APP j /i�T ° Federal 0i, Emergency Management Agency Washington, D.C. 20472 A A'n stc• 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. We provide the floodway designation to your community as a tool to regulate floodplain development. Therefore, the floodway revision we have described in this letter, while acceptable to us, must also be acceptable to your community and adopted by appropriate community action, as specified in Paragraph 60.3(d) of the NFIP regulations. COMMUNITY REMINDERS We based this determination on the base (1 -percent -annual -chance) flood discharges computed in the FIS for your community without considering subsequent changes in watershed characteristics that could increase flood discharges. Future development of projects upstream could cause increased flood discharges, which could cause increased flood hazards. A comprehensive restudy of your community's flood hazards would consider the cumulative effects of development on flood discharges subsequent to the publication of the FIS report for your community and could, therefore, establish greater flood hazards in this area. Your community must regulate all proposed floodplain development and ensure that permits required by Federal and/or State/Commonwealth law have been obtained. State/Commonwealth or community officials, based on knowledge of local conditions and in the interest of safety, may set higher standards for construction or may limit development in floodplain areas. If your State/Commonwealth or community has adopted more restrictive or comprehensive floodplain management criteria, those criteria take precedence over the minimum NFIP requirements. We will not print and distribute this LOMR to primary users, such as local insurance agents or mortgage lenders; instead, the community will serve as a repository for the new data. We encourage you to disseminate the information in this LOMR by preparing a news release for publication in your community's newspaper that describes the revision and explains how your community will provide the data and help interpret the NFIP maps. In that way, interested persons, such as property owners, insurance agents, and mortgage lenders, can benefit from the information. This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA 22304-4605. Additional Information about the NFIP is available on our website at http://www.fema gov/business/nfip. 3 Erin E. Cobb, CFM, Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration 132942 PT202.02.BKR.12080745P.H2O 102 -I -A -C ' Page's of 4 Issue Date: December 20, 2012 Effective Date: May 3, 2013 Case No.: 12.08-0745P LOMR-APP tr.; ° ` ''' 1A0 St . -,: Federal Emergency Management Agency Washington, D.C. 20472 LETTER OF MAP REVISION DETERMINATION DOCUMENT (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: 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 are processing a FIRM and FIS report for Weld County, Colorado, and its incorporated areas in our countywide format; therefore, we will not physically revise and republish the FIRM 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, will be distributed in approximately two months. At this point, it is unknown when the countywide FIRM and FIS report will become effective. Therefore, the modifications made by this LOMR will either be superseded when the countywide FIRM and FIS report become effective or will.be incorporated into the countywide FIRM and FIS report before they become effective. If the modifications made by this LOMR are not incorporated into the countywide FIRM and FIS report, then we will reissue this LOMR after the effective date of the countywide FIRM and FIS report. As part of this revision, the format of the map panels has changed. Previously, flood hazard information was shown on both the FIRM and the Flood Boundary and Floodway Map (FBFM). In the new format, all BFEs, cross sections, zone designations, and floodplain and floodway boundary delineations are shown on the FIRM, and the FBFM has been eliminated. Some of the flood insurance zone designations were changed to reflect the new format. Areas previously shown as numbered Zone A were changed to Zone AE. Areas previously shown as Zone B were changed to Zone X (shaded). Areas previously shown as Zone C were changed to Zone X (unshaded). This determination is based on the flood data presently available. questions about this document, please contact the FEMA Map Information LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA http://www.fema.gov/businessinftp. Erin Engineering Federal The enclosed documents provide additional information eXchange (FMIX) toll free at 1-877-336-2627 22304-4605. Additional Information about the NFIP . 7)�4 regarding this determination. If you have any (1-877-FEMA MAP) or by letter addressed to the is available on our website at PT202.02.BKR.12080745P.H2O 102 -I -A -C E. Cobb, CFM, Program Specialist Management Branch Insurance and Mitigation Administration 132942 Page 4 of 4 I Issue Date: December 20, 2012 Effective Date: May 3, 2013 Case No.: 12-08-0745P I LOMR-APP Federal Emergency Management Agency Washington, D.C. 20472 LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) PUBLIC NOTIFICATION OF REVISION A notice of changes will be published in the Federal Register. This information also will be published in your local newspaper on or about the dates listed below and through FEMA's Flood Hazard Mapping website at https://www.floodmaps.fema.gov/fhm/Scripts/bfemain.asp. LOCAL NEWSPAPER Name: The Greeley Tribune Dates: December 28, 2012 and January 4, 2013 Within 90 days of the second publication in the local newspaper, a citizen 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 information presented in this LOMB may be changed. This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA 22304-4605. Additional Information about the NAP is available on our website at http://www.fema.gov/businessinfip, e Erin E Cobb, CFM, Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration 132942 PT202.02.BKR.12080745P.H20 102 -I -A -C CCs >- 0 C a o a 00 Table I - Summary of Discharges (Cont'd) Source and Location C 0 r O O 0 00 cC M en M N In v O C C O N M M N V 00 N o N 9 O Cr, 9 M M V 0 00 N N rn 9 V M N 00 N Cn M N N 0 C O a 0 C M. C 0 C C 9 ° Y o Q 2 v 2 a a o u C E 2 2 Q Q Q Q O, N m en N At confluence of Tri-Area East Tributary O O 0 0 O O 0 0 Inc O O GC N O in N - O O O O CC O C. O O In C, O z 6 o; ❑ LU F Q 0 00 o O O O O O O O o .0 N <nciii N icr. N ,n } CO ❑ [L1 > 2 O O o O 2 O O O O M 91 VD N M N 9 en en C\ Oi 9 .r vt C 00 00 G 0 C o E E o ° o F C L0 C U .i m > '� Uo o E ° ° E 0 3 w EE v E E p o E L 0 m a o W .] 7 ❑ Confluence with South Platte River O O C cC N M N GG 0 0 9 CC z N O 0 V N o v O N O vi ,D m o 0 N ,c - In 9 GC G0 V-- �O N N 00 00 Qi Q N CO 0 s 0 M a I I f•1 �I Boulder Creek Turnpike O C M N 1 r OO ❑ F -J W cn W U > > W LL C W W µ 2 d W Data not Available Stream distance in feet above State Highway 66 EFFECTIVE: May 3, 2013 FLOODWAY DATA ST. VRAIN CREEK BASE FLOOD WATER SURFACE ELEVATION Lil con a WITHOUT I WITH FLOODWAY FLOODWAY (FEET NGVD) ::: r r- a V V V 0 I - U N Iii J > u_ W W CC d' V 0 O 00 —4 C' 00 0, o% r- v v v REGULATORY v - O 00 — C 00 o- r n r r- 7 C V FLOODWAY MEAN VELOCITY (FEET PER SECOND) n n r a ri SECTION AREA (SQUARE FEET) — 00 `0 ,n Cr,O M N - FEDERAL EMERGENCY MANAGEMENT AGENCY WELD COUNTY, CO (UNINCORPORATED AREAS) WIDTH (FEET) O 'Cr O WI 7 O in M 1N N N FLOODING SOURCE DISTANCE' in O O 0 00 'C lID r m e m CROSS SECTION x 0 0 U C 7 cz F F 4 m .: w ei M3330 NIY3A '1S tboz •S Aew 3Au03Ansalinad aoo m MWO11331d33 (svaav anvaoaao3NINn) OD 'A.LNIO0 muM "LIMY LN3M30YNYM AJN30N3M3 1Y33a3a co (aAON) .1334 NI NOILVATI3 C W <C U2 O< J H NN W V) W3 N y aWm 2 4'< z3 III = 1. ° 'o Z' w O Ira •NO OFt" Q a..K 4x oz0 N = 4Nz 2 m Q Ou a i- x ZN id S2 I- 2 Hello