High Dam Proposal
As built, Hells Canyon Dam is significantly lower than it was originally proposed in the 1940s, with three dams (Hells Canyon, Brownlee Dam and Oxbow Dam) taking the place of a single 710-foot (220 m) high dam. As proposed by the U.S. Army Corps of Engineers, the Hells Canyon High Dam would have been a straight-profile concrete gravity dam with two gate-controlled tunnel spillways, one in each abutment. The proposed reservoir was planned to have a capacity of 4,050,000 acre feet (5.00 km3) with an area of 23,500 acres (9,500 ha). The reservoir was to extend 89 miles (143 km) upstream. The power plant was to be capable of generating 850 MW using ten units. The project included provisions for fish hatcheries, with the intention of maintaining salmon runs. Project cost was estimated at $342,076,000. The high dam project was not pursued.
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Famous quotes containing the words high and/or dam:
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