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<br />Page 1 of 5 <br /> <br />Issue Date: MAR 2 9 2004 <br /> <br />Effective Date: JUL 1 6 200 Case No.: 04-08-0108P <br />Follows Conditional Case No.: 03-08-0032R <br /> <br />LOMR-APP <br /> <br /> <br />Federal Emergency Management Agency <br />Washington, D.C. 20472 <br /> <br />LETTER OF MAP REVISION <br />DETERMINATION DOCUMENT <br /> <br />COMMUNITY AND REVISION INFORMATION <br /> <br />PROJECT DESCRIPTION <br /> <br />BASIS OF REQUEST <br /> <br />COMMUNITY <br /> <br />Adams County <br />Colorado <br />(Unincorporated Areas) <br /> <br />CHANNELIZATION <br />CHANNEL RELOCATION <br />FILL <br />CULVERT <br /> <br />HYDRAULIC ANALYSIS <br />HYDROLOGIC ANALYSIS <br />NEW TOPOGRAPHIC DATA <br /> <br />COMMUNITY NO.: 080001 <br /> <br />IDENTIFIER <br /> <br />E-470 at Big Dry Creek - North Area Tributaries <br /> <br />APPROXIMATE LATITUDE & LONGITUDE: 4000.012', 104058.859' <br />SOURCE: USGS QUADRANGLE '. DATUM: NGVD 29 <br /> <br />FLOODING SOURCE(S) & <br />REVISED REACH(ES) <br /> <br />Mustang Run - from approximately 2,200 feet upstream to approximately 2,800 feet upstream of the confluence with Big Dry <br />Creek and from Interstate Highway 25 (1-25) to approximately 800 feet upstream <br />Sack Creek South - from approximately 1,600 feet upstream of the confluence with Sack Creek to the dual confluence of <br />Sack Creek South - North Alignment and Sack Creek South - South Alignment, located approximately 2,100 feet upstream <br />of the confluence with Sack Creek <br />Sack Creek South - North Alignment - from the confluence with Sack Creek South to approximately 900 feet upstream of 1-25 <br />Sack Creek South - South Alignment - from the confluence with Sack Creek South to approximately 600 feet upstream of 1-25 <br />Short Run - from approximately 500 feet upstream of the confluence with Big Dry Creek to approximately 3,800 feet <br />u stream of the Union Pacific Railroad <br /> <br />SUMMARY OF REVISIONS <br /> <br />Effective Flooding: Zone A <br />Revised Flooding: Zone A <br />Increases: YES <br />Decreases: YES <br />" BFEs - Base Flood Elevations <br /> <br />ANNOTATED MAPPING ENCLOSURES <br /> <br />NO.: 08001C0030 G Date: August 16, 1995 <br />NO.: 08001C0035 G Date: August 16,1995 <br /> <br />Zone X (shaded) <br />Zone X (shaded) <br />NONE <br />YES <br /> <br />TYPE: FIRM" <br />TYPE: FIRM <br /> <br />ANNOTATED STUDY ENCLOSURES <br />NO REVISION TO THE FLOOD INSURANCE STUDY REPORT <br /> <br />" FIRM - Flood Insurance Rate Map; "" FBFM - Flood Boundary and Floodway Map; """ FHBM - Flood Hazard Boundary Map <br /> <br />DETERMINATION <br /> <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 /> <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 1-877-336-2677 (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 />htto://www.fema.gov/nfio. <br /> <br /> <br />Doug Bellomo, P.E., CFM, Acting Chief <br />Hazard Identification Section <br />Mitigation Division <br />Emer enc Pre aredness and Res onse Directorate <br /> <br />102426D.AU40801081021C <br />