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<br />'. <br /> <br />-\ <br /> <br />the water on a percentage basis. The area within the circle <br /> <br />-1\)--- --- ---------- --- ~ -- --------- ----- -- --- <br />.' represents the average historic diversions of the Catlin Canal <br />-, <br /> <br />I;l <br /> <br />Company. It can be seen that while the state purchased 11.24 <br /> <br />percent of the shares it only received credit for 6.62 percent <br /> <br />of the water at the Catlin headgate and 6.25 percent at John <br /> <br />Martin reservoir. The Catlin Canal Company retained 91.01 percent <br /> <br />of the water (compared to 88.76 percent of the shares), 2.37 <br /> <br />percent of the water was left in the river, and 0.36 percent of <br /> <br />the water was used in transmission losses. <br /> <br />To serve as a rough check of historic return flow, a water <br /> <br />budget was computed for the reach of the Arkansas river between <br /> <br />Nepesta and Las Animas, and it is shown. on tab_le. 6. The values <br /> <br />for the Arkansas river at Nepesta and Las Animas are from published <br /> <br />USGS records. Total headgate diversions in water district 17 dur- <br /> <br />ing compact years 1950-72 were taken from the annual reports of <br /> <br />the Arkansas River Compact Administration, and the total diversions <br /> <br />during 1949 was obtained from the Arkansas Valley Ditch Association <br /> <br />reports. Tributary inflow in the reach was estimated using an <br /> <br />equation resulting from a regression analysis of the Apishapa river <br /> <br />discharge versus total tributary infiow~ The analysis was performed <br /> <br />on monthly values from October 1968 to September 1971 when all the <br /> <br />required data were available, and the total tributary inflow was <br /> <br />taken as the combined discharges of the Apishapa river, chicosa <br /> <br />- -creek--;- Timpas creek, a.rid crooked -arroyo. --Evapoi:aflonwasestimated _u <br /> <br />12 <br />