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<br />were made. Tentative, generalized curves relating flood <br /> <br /> <br />depths and velocities to structure damages on fans were also <br /> <br /> <br />constructed to serve as preliminary guides :or insurance <br /> <br /> <br />rate establishment. <br /> <br />The study tasks covered by this report are as follows: <br /> <br />1. design, construct. and operate a physical model <br />of idealized fan conditions and collect data on <br />hydraulic and sedimentation processes during <br />simulated flood events; <br /> <br />2. design, construct. and operate a physical model <br /> <br /> <br />of a prototype fan. specifically the Rancho <br /> <br /> <br />Mirage fan. and test whale-fan management <br /> <br /> <br />measure perform~nce; <br /> <br />3.. design. construct. and oper~te physical models <br />of local developed areas, such as <br />subdivisions. and test the performance of loc~l <br />structural measures and nonstructural measures; <br /> <br />4. verify the qualitative accuracy of the models <br />by comparing a model simulation of the 1979 <br />flood event at Rancho Mirage with actual flood <br />behavior; <br /> <br />5. <br /> <br />develop recommendations <br />applications based on <br />physical model results; <br /> <br />for management <br />field studies <br /> <br />tool <br />and <br /> <br />6. develop a methodology for selecting management <br />tools; <br /> <br />7. identify the environmental social. economic, <br />and inflationary impacts of management tools; <br /> <br />12 <br />