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<br />. Page 1 of 4 I Issue Date: FEB 1 3 2008 I Effective Date: JUN 2 7 2008 I Case No.: OS-OS-0056P T LOMR-APP <br /> Follows Conditional Case No.: 05-0S-00S1 R <br /> ""x'," <br /> !~~~1t:~ <br /> .j' ftl:~ Federal Emergency Management Agency <br /> IMI <br /> Washington, D.C. 20472 <br /> \~~~ , .did <br /> "'W"" <br /> LETTER OF MAP REVISION <br /> DETERMINATION DOCUMENT <br /> COMMUNITY AND REVISION INFORMATION PROJECT DESCRIPTION BASIS OF REQUEST <br /> City of Thornton CULVERT FLOODWAY <br /> Adams County DETENTION BASIN HYDRAULIC ANALYSIS <br /> Colorado EXCAVATION HYDROLOGIC ANALYSIS <br /> FILL NEW TOPOGRAPHIC DATA <br />COMMUNITY <br /> COI\IIMUNITY NO.: 080007 <br />IDENTIFIER Villages North Subdivision Filing No. 5 APPROXIMATE LATITUDE & LONGITUDE: 39.868, -104.954 <br /> SOURCE: Other DATUM: NAD 83 <br /> ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES <br />TYPE: FIRM. NO.: 08001C0602 H DATE: March 5. 2007 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: March 5, 2007 <br /> PROFILE(S): 02P - 05P <br /> FLOODWAY DATA TABLE: 4 <br />Enclosures reflect chang,es to flooding sources affected by this revision. <br />. FIRM - Flood Insurance Rate Map; .. FBFM - Flood Boundary and Floodway Map; ... FHBM - Flood Hazard Boundary Map <br /> FLOODING SOURCE(S) & REVISED REACH(ES) <br />Basin 4100 - from approximately 310 feet downstream of the Union Pacific Railroad to approximately 330 feet upstream of Thornton Parkway <br /> SUMMARY OF REVISIONS <br />Flooding Source Effective Flooding Revised Flooding Increases Decreases <br />Basin 4100 Zone AE Zone AE YES YES <br /> Floodway Floodway YES YES <br /> BFEs. BFEs YES YES <br /> Zone X (shaded) Zone X (shaded) YES YES <br />. BFEs - Base Flood Elevations <br /> DETERMINATION <br />This document provid,es the determination from the Department of Homeland Security's Federal Emergency Management Agency (FEMA) <br />regarding a request for a letter of Map Revision (LOMR) for the area described above. Using the information submitted, we have determined that <br />a revision to the flood hazards depicted in the Flood Insurance Study (FIS) report and/or National Flood Insurance Program (NFIP) map is <br />warranted. This document revises the effective NFIP map, as indicated in the attached documentation. Please use the enclosed annotated map <br />panels revised by this lOMR for floodplain management purposes and for all flood insurance policies and renewals in your community. <br />This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have <br />any questions about this document, please contact the FEMA Map Assistance Center toll free at 1-877-336-2627 (1-877 -FEMA MAP) or by letter addressed to the <br />LOMR Depot, 3601 Eisenhower Avenue. Alexandria, VA 22304. Additional Information about the NFIP is available on our website at http://www.fema.gov/nfip. <br /> ~,*e", a.-n~ <br /> Beth A. Norton, CFM, Program Specialist <br /> Engineering Management Branch <br /> Mitigation Directorate 11255310.3.4.01.08080056 102-I-A-C <br />