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<br />. <br /> <br />the State, and other Federal agencies. As a result, the desires <br /> <br /> <br />of local interests and the plans of other agencies receive full <br /> <br /> <br />consideration and the project as finally recommended for construc- <br /> <br /> <br />tion by the Corps of Engineers becomes a properly designed unit in <br /> <br /> <br />the ultimate comprehensive development of the stream basin. The <br /> <br /> <br />entire program, from preliminary planning through construction and <br /> <br /> <br />operation, is under the direction of the Secretary of the Army and <br /> <br /> <br />the supervision of the Chief of Engineers, U. S. Army. <br /> <br />U. S. Department of Housing and Urban Development, Federal <br /> <br /> <br />Insurance Administration (FIA). The two basic objectives of the <br /> <br /> <br />FIA in its involvement in the solution of flood-related problems <br /> <br /> <br />in the South Platte River basin is to (1) provide flood insurance <br /> <br /> <br />for properties in flood-prone areas and (2) encourage proper future <br /> <br /> <br />use of these areas. In order to achieve these objectives, FIA is <br /> <br /> <br />conducting two types of flood plain information studies to deter- <br /> <br /> <br />mine the extent of the flood problem in any given area. These are <br /> <br />classed as "emergency" and "detailed" flood insurance studies. The <br /> <br /> <br />purpose of an "emergency" study is the preliminary identification <br /> <br /> <br />of flood hazard areas within a given county or municipality. This <br /> <br /> <br />type of study outlines approximate flood hazard areas and utilizes <br /> <br /> <br />whatever flood plain information is available at the time. No new <br /> <br /> <br />hydraulic or hydrologic data is prepared as a part of an "emergency" <br /> <br /> <br />study. The purpose of a "detailed" flood insurance study is to pro- <br /> <br /> <br />vide greater detail regarding the hydrologic and hydraulic charac- <br /> <br /> <br />teristics of floods of various magnitude ranging from a probable <br /> <br /> <br />frequency of occurrence of once in 10 years to once in 500 years. <br /> <br /> <br />The necessary hydrologic and hydraulic information is compiled where <br /> <br /> <br />it does not already exist and fully verified where available. In <br /> <br /> <br />addition to water surface profiles for the 10, 50, 100, and 500 year- <br /> <br /> <br />frequency floods, flood hazard factor curves are developed which <br /> <br />42 <br /> <br />. <br />