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<br />C9~'l <br />-., <br /> <br />. <br /> <br />drawn to a low of 51, 600 acre-feet on May 12. The annual snowmelt <br />runoff began in mid-May and extended into early July filling the reservoir <br />to a maximum content for the year of 103,170 acre-feet on July 4. <br /> <br />The operation for the remainder of the year followed the plan except for a <br />slight change during the last half of September. Extra space was attained <br />in the reservoir by additional releases from about September 15 through 20. <br />This was done so that the outflows could be reduced to 50 c. f. s. during the <br />last 10 days of September to facilitate the installation of a new measuring <br />section at the USGS gaging station below the dam. Table 1 and exhibit 3 <br />show the actual operation for the water year 1970. <br /> <br />Turquoise Lake <br /> <br />On October 1, 1969, there was 35,205 acre-feet of water stored in Turquoise <br />Lake. Of that amount, 10,181 acre-feet was owned by the CF&I Steel <br />Corporation, 8,461 acre-feet by the Homestake project, 3,527 acre-feet by <br />the High Line Canal Company, and 13,036 acre-feet by the Fryingpan- <br />Arkansas project. <br /> <br />. <br /> <br />The natural runoff during the 1970 water year in the Upper Arkansas River <br />Basin was about 140 percent of normal. FalI and winter inflow to the <br />reservoir was somewhat higher than anticipated in the operating plan. The <br />spring and summer native inflow was near our predicted reasonable <br />maximum shown in the operating plan. <br /> <br />The CF&I Steel Corporation filled their decreed capacity of 17,416 acre-feet. <br />Storage of Homestake project water and High Line Canal Company water was <br />restricted because of danger of encroachment on the aggregate stockpile <br />located in the reservoir area at about elevation 9816. The aggregate is to <br />be used in lining of the Boustead Tunnel. <br /> <br />At the end of June 1970, there was 46,119 acre-feet of water in the <br />reservoir: CF&I Steel Corporation, 17,416 acre-feet; Homestake project, <br />8,620 acre-feet; High Line Canal Company, 5,450 acre-feet; and the <br />Fryingpan-Arkansas project, 14,633 acre-feet. This was slightly more <br />storage than shown under the plan for minimum probable conditions. <br /> <br />The reservoir was operated for the remainder of the water year much as <br />shown on the plan under reasonable minimum conditions, except for <br />additional drawdown late in the year. This drawdown was due to more <br />releases by the High Line Canal Company than anticipated under the plan, <br />and by sale of some 5,000 acre-feet of project water not anticipated under <br />the plan. <br /> <br />. <br /> <br />4 <br />