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<br />. <br /> <br />. <br /> <br />Washita River basin in south,wstorn Oklahoma. The purpose was stated <br />to be "to evolve mutually acce!ltuble procedures for evaluating hydro- <br />logic and economic effects of land treatment, small automatic detention <br />reservoirs and major reservoirs in order that the flood control plans <br />of the Department of Agriculture and the Corps of Engineers may be <br />integrated into comprehensive basin plans." <br /> <br />Much valuable work was done in com?arison of procedures both <br />hydrologic and economic for evaluating flood control, however, no con- <br />clusions of significance were reached as to the effects of reservoirs <br />on streamflow farther downstream. <br /> <br />A study of the Cheyenne River Basin above Angostura Dam is <br />reported in Geolo"ical Survey Circular 223, The report, written by <br />R. C. Culler and H. V. Peterson concerns a joint study by the Bureau <br />of Reclamation and the U. S. Geological Survey, It was commenced in <br />April 1950 and the report is dated 1953, The purpose was "to determine <br />the total number of stock reservoirs in the basin, the aggregate capacity <br />of the reservoirs, the amount of runoff stored each year, water losses <br />in the reservoir resulting from evaporation and see~age, and finally, <br />the effect of reservoir storage on runoff to An~ostura Reservoir, in- <br />cluding the effect on intervening channel losses." Conclusions are based <br />on surveys of 466 operating reservoirs in 49 sampls areas selected at <br />random in the Cheyenne River basin, The agerel3ate storage capacity was <br />2,618 acre-feet and the aggregate drainage ar'ea 222 "quare miles in a <br />basin total of 9, lUO square mile s. As ther" '.,'r2 no records of reservoir <br />inflow, outflow and changes in stage, aSt;mnutLU(lS "',l"" made based upon <br />data from outside the basin. Conclu"ions of ;,1,. c;tlldy were that there <br />were si(!.nificant loss('s 'cue to the res€rvoirs in I"","t, basin. Thp. study <br />has been continued since 1953. <br /> <br />The Flood Control Controversy is a oook written by Luna B. <br />Leopold and Thomas Maddock, Jr., and publiShed in 1954 under sponsorship <br />of the Conservation Foundation. It presents the technical problems in- <br />volved in flood control. The authors show the possibilities and limita- <br />tions, both of engineerillg structures and land managemant and anal;rz.e <br />the effectiveness of upstream and downstream programs for flood control, <br />Upstream and downstream programs are shown to be complem2ntary but not <br />interchangeable, The loss of water through evaporation is recognized <br />as a problem innarent in reservoirs where ,Iat',r is retained in conserva- <br />tion pools and evaporated to the detriment of estabUshed downstream <br />water rights. The authors do not attempt to cvruuate the stream deple- <br />tion effects of roservoirs but cite the Chey'cnnE' River basin study <br />previously mentioned in this report, <br /> <br />- 13 - <br />