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FPR 96-414 COLORADO WATER CONSERVATION BOARD 721 State Centennial Building 1313 Sherman Street Denver, Colorado 80203 March 13, 1996 RESOLUTION WHEREAS, the Federal Emergency Management Agency completed a floodplain information map entitled "Flood Insurance Rate Map, Town of Ramah, Colorado, El Paso County", dated February4, 1988; and WHEREAS, said map includes approximate floodplain delineations for Big Sandy Creek and Unnamed Tributary to Big Sandy Creek within the corporate limits of the Town of Ramah as of February 4,1988 but does not include hydrology information for Unnamed Tributary to Big Sandy Creek; and WHEREAS, the Colorado Water Conservation Board has not designated and approved said map; and WHEREAS, a new floodplain information report entitled "Floodplain Information Report, Town of Ramah, Colorado, El Paso County", d2,ted February 8, 1996 has been prepared by the Colorado Water Conservation Board; and WHEREAS, said new report for the Town of Ramah includes approximate floodplain information for Big Sandy Creek and Unnamed Tributary to Big Sandy Creek within the corporate limits of the Town of Ramah as of February 4, 1988; and WHEREAS, said new report incorporates the floodplain delineations of the Flood Hazard Boundary Map dated February 4, 1988; and WHEREAS, the hydrology for Big sandy Creek has been estimated in accordance with the Guidelines/or Determining lOO-Year Flood Flows/or Approximate Floodplains; and WHEREAS, the I DO-year flow for Big Sandy Creek is estimated by utilizing the regression equation for Arkansas River Basin Subregion Ark-I, QlOO= 1,564.98 * Ao.539, where QIOO is the 100-year peak flow in cubic feet per second and A is the upstream (contributing) drainage area in square miles; and WHEREAS, the drainage basin for that portion of Unnamed Tributary to Big Sandy Creek which extends upstream from its confluence with Big Sandy Creek is less than 25 square miles but larger than one-half (0.5) square mile; and