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Rattlesnake Tunnel will carry the water from Pole Hill Power Plant to Rattlesnake Reservoir and the Bald Mountain Tunnel will deliver the water to penstocks of the Flatiron Power Plant. Flatiron Power Plant will be lo"ated in Chimney Hollow about 4 miles south. of Big Thompson Cfu,yon and about 9 miles southwest of Loveland. As currently contemplated, this two-unit peaking plant will have an ultimate capacity of 63,000 kilowatts and an average operati~g head of approximately 1,100 feet. Flatiron Reservoir will provide 400 acre-feet of operating capacity and serve as an afterbay for the Flatiron Power Plant. It vall also regulate flows to the Horsetooth Feeder Canal and act as a forebay for the pumping plant which will deliver a portion of the water to Carter Lake Reservoir. Located in Chimney Hollow, about 8 miles southwest of Loveland, this reservoir ?dll require the construction of an earth and rockfill type dam on Dry Creek-- a tributary of the Big Thompson River. Waters destined for the Big Thompson River and for the Horsetooth Reservoir will be re- leased from this reservoir directly into the Horsetooth Feeder Canal. Waters to be stored in Carter Lake Reservoir, either for subsequent use in the St, Vrain Valley or for eventual use in the Big Thompson and Poudre Valleys, will be transferred to Carter Lake Reservoir by means of the Flatiron Pumping Plant and the Carter Lake Pressure Tunnel. Big Thompson Power Plant will be located near the mouth of Big Thompson Canyon and will operate on waters released from the Horsetooth Feeder Canal to the Big Thompson River. It will be a single-unit plant with an installed capacity of 6,700 kilowatts and an operating head of approximately 180 feet. Foothills Storage and SUDply System The system now under construction along the foothills border- ing the plains area will receive water from Flatiron Reservoir and the Big Thompson River, transport the water to conveniently located reservoirs for storage, and deliver supplemental water to existing irrigation facilities. Extending nearly 40 miles in a general north-south direction along the foothills above the plains area, this system will serve irrigation facilities located in the Little Thompson and St. Vrain Valleys south of Flatiron Reservoir and in the Big Thompson, Poudre, and North Poudre Valleys north of the reservoir. South from the Flatiron Reservoir, the system includes the Flatiron Pumping Plant and Carter Lake Pressure Tunnel, Carter Lake Reservoir, and the St. Vrain Supply Canal; north from the same point, it includes the Horsetooth Feeder Canal with appurtenant supply conduit leading from the Big Thompson River, Horsetooth Reservoir, the Dixon Feeder Canal, and the Poudre and North Poudre Supply Canals. 21