| OCR Text |
Show Reservoir site Height of Dam feet Mean Annual evaporations acre feet Active Storage acre feet Echo Park Gray Canyon 525 445 112,100 40,200 5,460,000 1,390,000 Total 152,300 6,850,000 Desolation Gray Canyon 365 250 395,000 18,300 6,000,000 250,000 Total 413,300 6,250,000 Increased evaporation Deficient storage 261,000 600,000 Desolation Gray Canyon 370 250 406,000 18,300 6,600,000 250,000 Total 424,300 6,850,000 Increased evaporation 272,000 Desolation Dewey 370 406,000 306,600 6,600,000 6,000,000 Total 712,600 12,600,000 Increased evaporation 560,000 The change, due to the use of revised formulas, in the amount of increase in evaporation which would result from the substitutions of the Desolation reservoir site in one or another combination with the Gray Canyon and Dewey sites would only reduce the evaporation loss by from 2% to 5% below that first reported. Any conclusions which might be drawn from the earlier study would, therefore, not require revision. That is, the substitution of reservoirs thus far proposed for the Echo Park and Split Mountain sites would increase the losses by evaporation by an amount of the order of 300,000 acre feet. The loss by evaporation at the Desolation site of about 400,000 acre feet is 3% times as great as would be the loss of 112,000 acre feet at the Echo Park site. Finally, the table shows that with the maximum feasible economic development at the Desolation and Dewey sites the loss of 700,000 acre feet would be more than 41/2 times as great as the 150,000 acre feet which could be expected if the Echo Park and Gray Canyon sites were used. -46- |
