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<br />As the basin develops further, flood protection and land treat- <br />ment measures that currently appear infeasible may become <br />feasible. Periodic investigation of the basin's flood and <br />erosion problems may be varranted. <br /> <br />h. Hydroelectric poyer, navi~tion, and irri~ation. Water <br />yields in the Sand Creek basin are insufficient to support the <br />development of hydroelectric poyer, navigation, or irrigation. <br /> <br />24. SOLUTIONS CONSIDERED <br /> <br />a. General. Full consideration vas given to the planning <br />objectives set forth in Senate Document No. 97, 87th Congress, <br />2d Session. Solutions considered for alleviating or mitigating <br />the basin's flood and related land-resource problems are <br />compatible vith the concepts of basin-vide development. In <br />developing these solutions, all economic influences, tangible <br />or intangible, beneficial or detrimental, vere considered. <br />Potential solutions to the problems are discussed in the <br />folloving paragraphs. <br /> <br />b. Basic concepts. Potential plans of improvement in the <br />Sand Creek basin vere screened to determine if they vould: <br /> <br />(1) <br />fulfilling an <br /> <br />Provide a practicable and economic means for <br />existing or prospective need; <br /> <br />(2) Be more efficient in the use and production of <br />economic resources than any other plan vhich vould be displaced <br />or precluded from development by the project; and <br /> <br />(3) Provide for a maximum of excess benefits, tangible <br />and intangible, over costs. <br /> <br />c. Flood control. i~e screening of potential solutions to <br />the basin's flood problems considered nonstructural, structural, <br />and combinations of nonstructural methods including flood plain <br />evacuation, zoning, and flood proofing. The structural methods <br />of flood control included levees, channel improvements, diver- <br />sions, and dams. <br /> <br />(1) Nonstructural measures. Evacuation, zoning, and <br />flood proofing methods were found to be impracticable due to <br />the nature and amount of development located in the downstream <br />reaches of the Sand Creek basin. Evacuation and modification <br />measures are estimated to cost in excess of $86 million. This <br />estimate does not include the costs of public properties such <br />as roads, streets, bridges, and public utilities which would <br /> <br />3078 <br /> <br />48 <br />