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<br />o <br /> <br />ATTACHMENT 2 <br /> <br />FPR 98-469 <br />Flood Hazard Boundary Map, Town of Ault, Colorado, May 17, 1974. <br /> <br />. <br /> <br />KEY ISSUES: <br />. The FHBM contains approximate floodplain information for local storm drainage problem <br />areas within the community. <br /> <br />. The storm drainage problems identified on the FHBM can be addressed through prudent land <br />use practices and future stormwater capacity improvements. <br /> <br />. FEMA concluded that there were no significant floodplain problems in Ault and effectively <br />rescinded the FHBM by a letter dated June 10, 1980. <br /> <br />. Portions of the Special Flood Hazard Area shown on the FHBM experienced flooding <br />conditions several years ago; however the flooded areas consist of ponded water behind a <br />highway embankment or low velocity overland flow from a small drainage basin. The flooding <br />problem may be viewed more as a stormwater drainage problem rather than a major floodplain <br />problem. <br /> <br />. There is a major development and annexation planned for the community that may contribute to <br />increased stormwater runoff. The CWCB staff recommends that the developer for the .- <br />subdivision proposal prepare a storm drainage plan. Construction of stormwater conveyance <br />and detention facilities should be implemented as needed. <br /> <br />COMMUNITY RESPONSE: <br />The Town of Ault sent a letter to the CWCB requesting either rescission or designation of the <br />1974 FHBM, depending on a meeting with CWCB and a field review of the map. The letter <br />indicated the town's initial preference for rescission of the map. Mter reviewing the <br />floodplain issues and conducting a site visit, CWCB staff agreed that the FHBM should be <br />rescinded. The town is supportive of the Board's proposed rescission of the 1974 map. The <br />staff has strongly recommended to the Town of Ault that a storm drainage plan be prepared <br />as part of the subdivision proposal. <br /> <br />SUMMARY: <br />The staff recommends Board approval of the floodplain resolution for the Town of Ault rescinding <br />the 1974 FHBM. The approximate floodplain information contained in the FHBM does not meet <br />the Board's "Floodplain Designation and Approval Rules". The rescission will assure that <br />inappropriate floodplain information within Ault, for the purposes of federal regulation and flood <br />insurance, is explicitly left unapproved by the state, thereby complying with state statutory <br />requirements. The rescission will in this particular case specifically call attention to the storm <br />drainage problems in the identified area, and recommend that those problems be regulated and dealt <br />with at the local level. <br /> <br />. <br />