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<br />River Regulation <br /> <br />During water year 1976, 8,508,000 acre-feet were <br />released from Glen Canyon Dam as measured at <br />the gaging station at Lees Ferry, Ariz, For the <br />1-year and 10-year periods ending September 30, <br />1976,8,520,000 acre-feet and 87,861,000 acre-feet, <br />respectively, passed the compact point at Lee <br />Ferry, Ariz, The expected release of 9,245,000 acre- <br />feet from Lake Powell scheduled for the year end- <br />ing September 30, 1977, is based on the most <br />probable runoff. When added to the flow of the <br />Paria River, this will result in Upper Basin delivery <br />of aboul 89,3 million acre-feet for the 10-year <br />period ending September 30, 1977, and would <br />equate water storage in Lake Mead and Lake <br />Powell. <br /> <br />Water releases scheduled for the Colorado River <br />Storage Project and participating project reser- <br />voirs were planned to accommodate all of the <br />multiple purposes for which the project was de- <br />signed, in addition to the many day-to-day de- <br />mands developed throughout the year, <br /> <br />Normally, daily releases are made from the stor- <br />age reservoirs in the Lower Basin to meet the in- <br />coming orders of the water user agencies and all <br />water passes through the turbines, The daily re- <br />leases are regulated on an hourly basis to meet, <br />as nearly as possible, the power loads of the elec- <br />tric power customers. Minimum dail~! flows are <br />provided in the river to maintain fishery habitat. <br />Adjustments to the normal releases are made <br />when possible to provide more satisfactory condi- <br />tions for water-oriented recreation activities, to <br />provide transport for riverborne sediment to de- <br />silting facilities, and to provide a degree of con- <br />Irol of water quality. <br /> <br />River regulation below Hoover Dam was accom- <br />plished in a manner which resulted in delivery to <br />Mexico of 274,213 acre-feet in excess of minimum <br />treaty requirements during water year 1976. Of that <br />quantity, 205,586 acre-feet were delivered for salin- <br />ity control pursuant to provisions of Minute No. <br />242 of the Mexican Treaty. <br /> <br /> <br />Coachella Canal, Coach ell a Division-All-American Canal <br />System, California. <br /> <br />20 <br />