Leg 3 of the Trans-Rocky-Mountain aqueduct. From Keystone Dam to Kaw Dam.

The third leg of the Trans-Rocky-Mountain takes us from from the Keystone dam

Lake level 723′ Lake storage 432,000 Acre-ft

to the Kaw dam

Elevation 1010′ normal 76′ drop

via pumping 11,200 cfs of water up the Arkansas river. The Keystone Lake is 38 miles long and the river part is about 110 miles.

The drop in the river is 211 feet and with a slope of the water of 0.4 feet/mile the total lift need to be 255 feet. This will be accomplished by deepening the Arkansas river channel by 20 feet and build ten 25,5 feet high dams that can open fully and let the water flow freely down the channel. The total capacity of the channel will then be 28,800 cfs. Under normal operation the dams will be closed and water will be pumped up the height of the dam, but when Kaw dam start generating power, the flow will be reversed and all pumps/generators will generate power. When the Kaw dam spillways open, all the dams will open, no power is generated. This will occur rarely, but the function is needed for flood control. The maximum power needed for this leg is 11,200 cfs water pumped up (1010′ -723′ + 110×0,4′) = 329 feet. Assuming pump efficiency of 92% maximum power requirement is 331 MW, best provided with LFTR nuclear reactors. The Kaw dam generates an average of 11.8 MW of power, but a project is under way to remove 1 million gallons/day for municipal water use, removing on average 210 kW generating capacity. Water use will only increase with time.

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Retired engineer, graduated from Chalmers Technical University a long time ago with a degree in Technical Physics. Career in Aerospace, Analytical Chemistry, computer chip manufacturing and finally adjunct faculty at Pennsylvania State University, taught just one course in Computer Engineering, the Capstone Course.

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