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'.. . . feet of S'tsna water would be pumped in the summertime. By this alternate every acre-foot of water delivered to Riverside would be pumped through an average head of about 28 feet. The construction cost of this alternate would be $2,650,000, and the total annual cost including operation, maintenance, replacement and pumping energy would be $96,510. Having gone this far with alternate (b) it was obvious that alternate (a) was better, so we did not investigate alternate (b) in greater detail. By alternate (c) an outlet would be placed through the Narrows~m on the nor e and project water pumped from this outle~e Riverside Canal. The present de supply canal a -Riverside Reservoir would be retained and only supplementa furnished by the project. The construction cost of fe for this al e would be $1,877,000 and the total cost including operation, ma1 ance, replacement and pump energy would be $83,700. It was obvious tha ernate "a" was tel' than alternate "c", so we pursued alternate "c" no further. In our site selection study reported to you last February, we displayed Exhibit 8. This chart showed water available in the river at a point near Sterling. This reVelation naturally generated speculation as to how the water could be developed. In consultation with the staff of the Colorado Water Conservation Board we developed that the best way would be to pump the water which occurs mostly in the winter into the North Sterling ditch for storage in the North Sterling Reservoir, using a portion of the existing storage for that purpose and replacing it with storage in the Narrows Reservoir. By this method a large portion of North Sterling's present storage water could be held in Narrows until needed in the summer. The plan developed for this feature would' utilize the Lowline Ditch and Diversion Dam, one mile east of Sterling, and two miles of the ditch. Four miles of neW canal would be constructed to a pumping plant at the north edge of the valley floor. From the end of the 6,000 foot pump . discharge line, two miles of canal would conduct the water to the North Sterling Canal at a point 7 miles upstream from the North Sterling Reservoir. The system would have a capacity of 170 cfs. The pumping plant would have a static lift of 170 feet and require a 4,000 horse- power installation. It would furnish 32,200 acre-feet annually based on the years 1952-1957. In the minimum year it would supply 18,000 acre- feet. An additional capacity of 75,000 acre-feet would be required in the Narrows Reservoir to service this plan without interfering with the present effIciency of the North Sterling system. The cost of this 3