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<br />, Page 1 of 5 I Issue Date: MAY 10 I Effective Date: SEP 0 7 I Case No.: 05-08-0531 P I LOMR-APP <br /> - <br /> 1\.) Federal Emergency Management Agency <br /> ~~ '<:,~ Washington, D.C. 20472 <br /> .(-1ZVD s~c; <br /> - <br /> LETTER OF MAP REVISION <br /> DETERMINATION DOCUMENT <br /> COMMUNITY AND REVISION INFORMATION PROJECT DESCRIPTION BASIS OF REQUEST <br /> City of Arvada CULVERT BASE MAP CHANGES <br /> Jefferson County HYDRAULIC ANALYSIS <br />COMMUNITY Colorado HYDROLOGIC ANALYSIS <br /> NEW TOPOGRAPHIC DATA <br /> COMMUNITY NO.: 085072 <br />IDENTIFIER Leyden Creek FHAD APPROXIMATE LATITUDE & LONGITUDE: 39.823, -105.126 <br /> SOURCE: USGS QUADRANGLE DATUM: NAD 83 <br />FLOODING SOURCE(S) & Leyden Creek - from the confluence with Ralston Creek to just upstream of Church Ditch <br />REVISED REACH(ES) <br /> SUMMARY OF REVISIONS <br />Effective Flooding: Zone AE No Floodway Floodway Zone A Zone X (unshaded) Zone AO BFEs* <br />Revised Flooding: Zone AE Floodway Floodway Zone AE Zone X (shaded) Zone X (shaded) BFEs <br />Increases: YES YES YES NONE YES NONE YES <br />Decreases: YES NONE YES YES YES YES YES <br />* BFEs - Base Flood Elevations <br /> ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES <br />TYPE: FIRM' NO.: 08059C0184 E Date: June 17, 2003 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: June 17, 2003 <br />TYPE: FIRM NO.: 08059C0203 E Date: June 17, 2003 PROFILES: 279P through 282P, 287P, and 288P <br /> FLOODWAY DATA TABLE: 7 <br /> SUMMARY OF DISCHARGES TABLE: 4 <br />, FIRM - Flood Insurance Rate Map; .. FBFM - Flood Boundary and Floodway Map; .., FHBM - Flood Hazard Boundary Map <br /> DETERMINATION <br />This document provides 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 <br />'determined that a revision to the flood hazards depicted in the Flood Insurance Study (FIS) report and/or National Flood Insurance <br />Program (NFIP) map is warranted. This document revises the effective NFIP map, as indicated in the attached documentation. Please <br />use the enclosed annotated map panels revised by this LOMR for floodplain management purposes and for all flood insurance policies and <br />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 <br />you have 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 <br />addressed to the LOMR Depot, 3601 Eisenhower Avenue, Alexandria, VA 22304. Additional information about the NFIP is available on our website at <br />http://www.fema.gov/nfip. <br /> ~e~ <br /> Kevin C. Long, CFM, Project Engineer <br /> Engineering Management Section <br /> MitiQation Division 10697910.3.1.05080531 102-I-A-C <br />