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<br /> <br />Federal Emergency Management Agency <br />Washington, D,C. 20472 <br />APR 2 6 2001 <br /> <br />CERTIFIED MAIL <br />RETURN RECEIPT REQUESTED <br /> <br />IN REPLY REFER TO: <br />Case No.: 00-08-325R <br /> <br />The Honorable Amy Levek <br />Mayor, Town of Telluride <br />P.O, Box 397 <br />Telluride, CO 81435 <br /> <br />Community: Town of Telluride, CO <br />Community No.: 080168 <br /> <br />104 <br /> <br />Dear Mayor Levek: <br /> <br />This responds to a request that the Federal Emergency Management Agency (FEMA) comment on the <br />effects that a proposed project would have on the effective Flood Insurance Rate Map (FIRM) and Flood <br />Insurance Study (FIS) report for San Miguel County, Colorado and Incorporated Areas (the effective <br />FIRM and FIS report for your community), in accordance with Part 65 of the National Flood Insurance <br />Program (NFIP) regulations, In a letter dated July 17, 2000, you requested that FEMA evaluate the <br />effects that the San Miguel River Corridor Restoration Project would have on the flood hazard <br />information shown on the effective FI.RM and FIS report. The San Miguel River Corridor Restoration <br />Project includes: <br /> <br />. A sediment detention basin approximately 450 feet upstream of Pinon Street, that will consist of <br />an excavated pond with drop structures at the pond inlets and outlets on the San Miguel River <br />and a grade control structure at the outlet of Bear Creek. The sediment pond will have an <br />excavated volume of approximately 700 cubic yards. <br /> <br />. Replacement of the existing Maple Street Bridge by a single 40-foot span auto bridge, <br /> <br />. Upstream of Maple Street and upstream of Pine Street, along the left bank of San Miguel River <br />fill will be placed and banks will be stabilized <br /> <br />. Minor channel realignment will be done between Fir Street and Maple Street. <br /> <br />. Vortex rock weirs will be installed approximately 150 feet and 350 feet upstream of Pine Street <br />and approximately 50 feet upstream of the Pacific Avenue Footbridge. <br /> <br />. Drop structures will also be installed approximately 550 feet upstream of Pine Street, <br />approximately 100 feet downstream of the Pacific Avenue Footbridge, and approximately 950 <br />feet upstream of Maple Street. <br /> <br />. The whole project reach will be channelized in a step-pool pattern with several concave-bend <br />pools and numerous cover logs and boulder covers will be placed through out the reach, <br /> <br />All data required to complete our review of this request for a Conditional Letter of Map Revision <br />(CLOMR) were submitted with letters from Mr. C. Gary Wolff, P.E., Senior Engineer, Mussetter <br />Engineering, Inc,; Mr. Lance McDonald, Special Project Manager, Town of Telluride; and you. <br /> <br />We reviewed the submitted data and the data used to prepare the effective FIRM for your community and <br />determined that the proposed project meets the minimum floodplain management criteria of the NFIP. <br />The submitted existing conditions HEC-2 hydraulic computer model, dated March 23, 2000, based on <br />updated topographic information, was used as the base conditions model in our review of the proposed <br />conditions model for this CLOMR request. We believe that, if the proposed project is constructed as <br />