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<br />JUL 07 2003
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<br />~ollldo Water Conservation Board
<br />
<br />
<br />Federal Emergency Management Agency
<br />Washington, D.C. 20472
<br />
<br />CERTIFIED MAIL
<br />RETURN RECEIPT REQUESTED
<br />
<br />IN REPLY REFER TO:
<br />Case No,: 03-08-0270P
<br />
<br />The Honorable Karen Stuart
<br />Mayor, City and County of Broomfield
<br />One DesCombes Drive
<br />Broomfield, CO 80020
<br />
<br />Community: City and County of
<br />Broomfield, CO
<br />Community No,: 085073
<br />Panel Affected: 0020 E
<br />Effective,Date of JU N 2 7 2003
<br />ThIs ReVlSlon:
<br />
<br />102-D-A
<br />
<br />Dear Mayor Stuart:
<br />
<br />This responds to a request that the Federal Emergency Management Agency (FEMA) revise the effective
<br />Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) report for your community in
<br />accordance with Part 65 of the National Flood Insurance Program (NFIP) regulations, In a letter dated
<br />February 21,2003, Mr. Burt 1. Knight, P,E., City Engineer, City and County of Broomfield, requested that
<br />FEMA revise the FIRM,and,EIS_report.to,show.the,effects,ofchannel-modifications-associated'with,the
<br />Red Leaf Development along West Lake Channel upstream of Lowell Boulevard, The channel
<br />modifications included channelization, channel relocation, and grading, This request follows up on a
<br />Conditional Letter of Map Revision issued on September 17,2002, Although a portion of the project area
<br />is shown on the FIRM as in the unincorporated areas of Adams County, this area was annexed by the City
<br />and County of Broomfield,
<br />
<br />All data required to complete our review of this request were submitted with letters from Mr. Patrick D,
<br />Quinney, P,E" Director of Engineering Services, CVL Consultants, Inc., and Mr, Knight.
<br />
<br />We have completed our review of the submitted data and the flood data shown on the effective FIRM and
<br />in the effective FIS report, We have revised the FIRM and FIS report to modify the elevations, floodplain
<br />and floodway boundary delineations, and zone designations of the flood having a I-percent chance of
<br />being equaled or exceeded in any given year (base flood) along West Lake Channel. As a result of the
<br />modifications, the Base Flood Elevations (BFEs) for West Lake Channel are contained in the new channel
<br />from approximately 200 feet upstream to approximately 2,200 feet upstream of Lowell Boulevard, and the
<br />BFEs decreased through the remainder of the revised reach, The widths of the Special Flood Hazard Area
<br />(SFHA), the area that would be inundated by the base flood, and the regulatory floodway decreased and
<br />shifted to the north approximately 100 feet to approximately 300 feet. The modifications are shown on the
<br />enclosed annotated copies of FIRM Panel 0020 E, Profile Pane130P, and affected portions of the
<br />Floodway Data Table, This Letter of Map Revision (LOMR) hereby revises the above-referenced panel of
<br />the effective FIRM and the affected portions of the FIS report, both dated September 30, 1997,
<br />
<br />The modifications are effective as of the date shown above, The map panel listed above and as modified
<br />by this letter wilI be used for all flood insurance policies and renewals issued for your community,
<br />
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