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<br />Question 46 - .Pre1iminary Planning of Dam Developments. <br />(a) Practical applications of systems analysis to siting <br />and sizing of reservoirs. <br /> <br />, <br /> <br />SIZING flOOD CONTROL RESERVOIR SYSTEMS. <br />BY SYSTEMS ANALYSIS <br />1 ~ 2 <br />Bill S. Eichert and Darryl W. Davis <br /> <br />United States Committee on Large Dams <br /> <br />INTRODUCTION <br /> <br />Flood control reservoir systems are designed to reduce the <br /> <br />intensity of flooding in flood plains to acceptable levels. Planning <br />flood control reservoir systems requires analysis of basin-wide hydrol- <br />ogy, individual reservoir and system operation, and system performance <br />in reducing intensity of flooding. Sizing reservoir systems (system <br />formulation) includes the major tasks of selecting system components <br />from among competing alternatives and determining the flood control <br />storage within each reservoir. Selection of system components (con- <br />figuring the system) is the key element in the analysis, This paper <br />focuses upon reservoirs as flood control measures, but it should be <br />emphasized that non-reservoir measures, such as levees and channel <br />work can form invaluable system components. <br /> <br />Analysis of the performance of alternative flood control systems <br /> <br /> <br />is greatly complicated by the system interaction that can occur among <br /> <br /> <br />system components. One of the important interactions in a system <br /> <br />l,2Director, The Hydrologic Engineering Center and Chief, Planning <br />Analysis Branch, The Hydrologic Engineering Center, U.S. Army <br />Corps of Engineers, Davis, California. <br />· Prepared for Presentation at the XrI International Commission <br />on Large Dams Congress, Mexico City, March 1976. <br />