Laserfiche WebLink
<br />GO tV'l i <br /> <br />. <br /> <br />. <br /> <br />he~ level of 1,123 feet mean sea level. This was aceomplished on June 23 <br /> <br /> <br />with Lake Powell ris1Dg to 3,502.5 feet on the same date. Releases at <br /> <br /> <br />Glen Canyon have been redueed to the powerplant capacity, and Lake Powell <br /> <br /> <br />is now expected to rise during the summer to about elevation 3,530 feet <br /> <br /> <br />(content 8,444,000 acre-feet)--the highest in the short history of the <br /> <br /> <br />lake. <br /> <br />Specifications have been issued for construction beginning in Sep- <br /> <br /> <br />telllber 1965 of a plug for the left diversion tunnel. This will result in <br /> <br /> <br />a permanent entrapment of about 2 million acre-feet below the mini:mum <br /> <br /> <br />operating level of the four 96-illch hollow jet valves (elevation 3,370 <br /> <br /> <br />feet), which is about 120 feet lower than the minimum operating level of <br /> <br /> <br />the powerplant. <br /> <br /> <br />The June 1 foreeast for the April-July runoff remained at 11,000,000 <br /> <br /> <br />aere-feet, and heavy precipitation throughout June in the upper Basin <br /> <br /> <br />enhanees the prospects that the total forecasted runoff will materialize. <br /> <br /> <br />Approximately 8.8 million acre-feet was reeorded in the April-June period, <br /> <br /> <br />leaving about 2.2 million acre-feet runoff in July needed to realize the <br /> <br /> <br />11 million acre-foot forecast. <br /> <br /> <br />:.-( Flaming Gorge Reser.roir has risen rapidly from its April 26 low ele- <br /> <br /> <br />vation of 5,909 feet (583,000 acre-feet). on June 30 the elevation was <br /> <br /> <br />5,962 feet with a eontent of 1,414,000 aere-feet. The lake should con- <br /> <br /> <br />tinue to rise slowly through next winter. The rapid illcrease has been <br /> <br /> <br />caused by very high runoff, illcluding heavy flooding from rain storms ill <br /> <br /> <br />the Uinta Mountaills, and a reduetion ill power releases begimling May l. <br /> <br /> <br />The reduction ill power production resulted from the transfer of some Flam- <br /> <br /> <br />1Dg Gorge loads to Glen Canyon. Heavy water releases at Glen Canyon and <br /> <br />3 <br />