Board Meeting 03/29/1999 - Laserfiche WebLink

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~ , ATTACHMENT 6 e FPR 99-487 Draft Floodplain Information Report, City of Cortez, dated February 1999 including Flood Insurance Rate Map, City of Cortez, Montezuma County, Colorado, dated April 1, 1977. KEY ISSUES: . The FEMA Flood Insurance Rate Map contains approximate IOO-year floodplain delineations for flooding sources within the community. These delineations are based on very cursory analyses rathe~ than detailed engineering determinations. . The City of Cortez determined that there are technical deficiences with the existing FEMA floodplain delineations, and requested CWCB staff to evaluate and revise floodplains as necessary to reflect more accurate conditions. CWCB staff performed field invesigations and preliminary engineering analyses in order to draft a new Floodplain Information Report (FIR, dated February 1999) for the City. The City provided current topographic mapping, and is willing to provide funding as needed for future FEMA reviews, in support of the new CWCB study. . The City is experiencing growth and has annexed a number of land areas in Montezuma County since the time of the original FEMA study. The City has implemented a number of storm drainage projects that have alleviated flood problems in portions of the community. The City, therefore, desires to have updated floodplain maps that reflect current corporate boundaries and public works projects to control ,. flooding. - COMMUNITY RESPONSE: The City of Cortez sent a letter to the CWCB requesting designation and approval of the 1977 Flood Insurance Study, and requested by telephone that the 1977 maps be evaluated and revised by CWCB staff. A meeting with the City was held and an extensive site investigation was performed by CWCB staff. The City is thrilled to have technical support from the CWCB, and is supportive of the Board's proposed designation of the 1999 that includes the 1977 FEMA map for reference purposes. SUMMARY: The staff recommends Board approval of the floodplain resolution for the City of Cortez designating the 1999 Floodplain Information Report (FIR). The revised approximate floodplain information contained in the FIR meets the Board's "Floodplain Designation and Approval Rules". The designation will assure that the latest available floodplain information for Cortez is explicitly approved by the state, thereby complying with state statutory requirements. The staff has encouraged the City to submit the 1999 FIR to FEMA for official recognition as regulatory floodplain information. e 10