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<br />'..... :.:\,~_r <br /> <br />""', , 002278 <br /> <br />A. No. Oaddoa reservoir will aocomplish only a fraction,of the job <br /> <br />even when it is first completed. Othar reservoirs are needed. both upstream' <br /> <br />in Colorado and downstream in Kansas. to supplement tbe operations of Caddoa <br /> <br />reservoir. and ultimately they will be neoessary to replnoe the storage cap- <br /> <br />acity of that project as it is destroyed by siltation. <br /> <br />By way of explBJ'lation. the total flow at Caddoa inoluding floods <br /> <br />averaged 319,600 A F annually during 1908-1942. about half' of' whioh (159.100 AF) <br /> <br />was diverted by ditches in District 67 in Colorado. While the Caddoa f'low <br /> <br /> <br />previously diverted by Distriot 67 ditches may be stored, as a matter of regu- <br /> <br />lation for f'uture use. it oannot be oonserved in the sense of' thereby increas- <br /> <br />ing the quantities of water diverted. <br /> <br />The remaining Caddoa flow undiverted by llistrict 67 ditches, <br /> <br />averaging 160.500 AF annually during the pre-Caddoa period. augmented below <br /> <br />Oaddoa by tributary inflows and return flows of an average magnitude, of l1B ,100 <br /> <br />AF annually, constituted the total state flow entering Kansas. averaging <br /> <br />278,600 AF annually. the segregations of which. between usable and unusable <br /> <br />supplies in Kansas. were previously discussed. <br /> <br />Caddoa reservoir cannot, of course. regulate or consene BJ'ly of <br /> <br />the tributary inflows or return flows entering the river downstre!lJll. Nor can <br /> <br />the Caddoa project conserve all of the f'low (termed undiverted by District <br /> <br /> <br />67 ditches) for increased use. A part thereof, like the Caddoa flows divert- <br /> <br />ed by District 67 ditches, may be regulated but must be delivered at the <br /> <br />Btateline to avoid interfering with previous diversions in KBJ'lsas. <br /> <br />Theoret- <br /> <br />ieally. the balance might be impoundecb. though actually some of the impounded <br /> <br />water will unavoidably be lost by evaporatioql and another portion. at times <br /> <br />of major f'loods and during periods of large runoff, will inevitably spill <br /> <br />from the irrigation pool. <br /> <br />(4) <br />