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<br />./0" <br /> <br />. <br /> <br />. <br /> <br />~ <br /> <br />001&33 <br /> <br />CRSP Reservoirs <br /> <br />Four generating units are now available for commercial generation at Glen <br /> <br />Canyon. Water is being used for power praduction to the extent that loads and <br /> <br />transmission lines are available. lake Powell is being maintained at approximately <br /> <br />elevation 3,490, which necessitates some water bypasses from time to time. Some <br /> <br />small bypasses of water were made in late December 1964, mid-February 1965, and <br /> <br />early March. An additional bypass was initiated on March 31. These nonpower <br /> <br />releases will probably be more or less continuous now during the spring runoff in order <br /> <br />to return lake Mead to its rated head as soon as possible. <br /> <br />The outlook for runoff from the Upper Basin is very good, for our April 1 fore- <br /> <br />cast is 10,800,000 acre-feet at Glen Canyon. Even if unusual spring weather is <br /> <br />experienced, it now appears that average runoff can be anticipated from the Upper <br /> <br />Colorado River Basin. <br /> <br />We are now releasing water from Navajo as rapidly as the outlet works permit <br /> <br />in order to prevent, or at least delay, flooding of the construction of the inlet portal <br /> <br />of the Navajo Indian Irrigation Project. The outlet valves will remain fully open until <br /> <br />about mid-July when we estimate the reservoir level can be maintained below eleva- <br /> <br />tion 5,955, the level of the inlet portal. Some inundation of the inlet portal will <br /> <br />probably occur before that time, however. <br /> <br />Plans for the operation of Fontenelle are now being made. We are not certain <br /> <br />'lo <br />yet whether it will be necessary to pass all inflow/or whether it would be desirable to <br /> <br />fill all or part of the reservoir this spring. The reason for not filling the reservoir, of <br /> <br />course, would be to assure the filling of lake Mead to rated head this year. <br /> <br />3 <br />