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<br /> <br /> <br />003713 <br /> <br />. <br /> <br />. <br /> <br />Navajo Unit <br /> <br />Work was completed in July on the outlet works and spillway stilling basin repairs <br />at Navajo Dam. <br /> <br />Paonia Project <br /> <br />We expect to issue specifications during September for rehabi Ii toting three reaches <br />of Colorado Highway No. 133 adjacent to the spillway at Paonia Dam and along the reser- <br />voir shoreline. This work should materially reduce the extraordinary maintenance problem <br />that has confronted the Colorado Department of Highways since the relocated roadwoy was <br />placed in service. The Bureau wi II perform the earthwork and slope stabilization for the <br />remedial work and the Highway Department will place the bituminous road surfacing. <br /> <br />CRSP RESERVOIRS <br /> <br />The 1968 snowmelt runoff in the Upper Colorado River Basin for the April-July <br />period was about 7,250,000 acre-feet, or about 85 percent of the long-time average for <br />this period. We estimate that the total runoff for the water year which ends September <br />30, 1968, will be about 1006 million acre-feet, which is also about 85 percent of normal. <br />The deposition of this total runoff will be about as follows: <br /> <br />Net storage increase <br />Evaporation and bank storage losses <br />Releases to lower Basin . <br />Total runoff, water year 1968 <br /> <br />Acre-feet <br />1,300,000 <br />900,000 <br />8,400,000 <br />JO, 600, 000 <br /> <br />All of the Upper Basin reservoirs will have gained storage during water year 1968 <br />except Flaming Gorge, from which about 700,000 acre-feet has been released to improve <br />the power head at Glen Canyono <br /> <br />During the same 12-month period, lake Mead will have gained about 700,000 acre- <br />feet of storage. <br /> <br />lake Powell's water surface is now at an all-time high at about 3550 feet elevation <br />wi th a surface storage of 9,850,000 acre-feet. The lake is expected to remai n near th is <br />level until the spring runoff starts in 1969, The release for water year 1968 will also be <br />about 8.4 million acre-feet. <br /> <br />Deliveries to the lower Basin for the first six years of the fi IIing period wi II total <br />about 40 million acre-feet, leaving about 35 million acre-feet or an average of about <br />8.8 million acre-feet per year for the next four years in order to attain a total delivery of <br />75,000,000 acre-feet for the ten-year period, 1963-J972. Power loads should be adequate <br />to require releases of at least this amount of water in the next four years. The relatively <br />2 <br /> <br />