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<br />copy <br /> <br />O~19J4 <br /> <br />2 <br /> <br />would be available for diversion to the Arkansas basin. <br />Estimates of the average May-July water production originating <br />above the collection system for the combined sub-areas were made <br />for variable water supply conditions such as have occured in <br />historic periods as follows: <br /> <br />Period <br /> <br />May-July Runoff Above Collection System <br /> <br />1911-1953 <br />1934-1953 <br />1931-1940 <br /> <br />82,000 <br />74,000 <br />66,000 <br /> <br />acre feet <br /> <br />acre feet <br /> <br />acre feet <br /> <br />.... <br /> <br />The portion of this runoff which it would be <br />practicable to divert would depend on the capacities of the <br />various units of the collection system, including the <br />regulatory reservoir, and the difficulties which might be <br />encountered in opening the collection canals in time to <br />intercept all the Mayiunoff. It is not always economically <br />practicable to construct canals of sufficient capacity to <br />carry the peak daily runoff during years with water supplies <br />considerably above average. As a matter of judgement, it <br />was estimated by the staff that this project could reasonably <br />be expected to deliver an average of some 60,000 to 65,000 <br />.acre-feet to the Lake Fork of the Arkansas River. <br /> <br />Very truly yours, <br /> <br />Ivan C. Crawford <br />Director, Colorado Water Conservation Board <br /> <br />ICC:kc <br />