TVA's Blue Ridge Dam
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Blue Ridge Dam is located just outside the city limits of Blue Ridge,
GA, on the Toccoa River. (The Toccoa becomes the Ocoee River at the TN
state line.) Specs are given as 174 feet high and 1,553 feet long, with
a power capacity of 13 megawatts (the web page now says 22 megawatts).
Construction is a combination of earth and rock fill, with a concrete
gated spillway, as well as an overflow uncontrolled concrete spillway.
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Here is a shot of the power house and switchyard. There is also a
structure where the water is apparently injected with air before
allowing to proceed downstream. This dam was constructed by the Toccoa
Power Company, a subsidiary of the Tennessee Electric Power Company,
spanning the years 1925-1930. TVA purchased this dam in 1939.
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This is the uncontrolled spillway. The lake was below winter pool while
construction and repairs were being conducted on the intake structure
and the rest of the dam. Unfortunately, this also closed a road that
prevented us from getting good shots of the downstream side of the
spillways, and the road over the top was closed to vehicular traffic...
except for school buses. This was a good idea because the buses would
have had to detour to a busy Highway US 76 (GA 515) which would have
been a safety hazard.
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The channel into the uncontrolled spillway. One source gave the normal
"full pool" as 1690 feet. A USGS document states that the
"top of gates" pool as 1691 feet, and normal minimum pool as
1590 feet. The lake is entirely within Fannin County, GA.
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This is the lake side of the gated spillway, which is controlled with
five tainter gates measuring 15 feet high by 22 feet wide.
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This is the bypass channel that both spillways empty into.
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And the intake to the powerhouse. Apparently this structure had some
problems that resulted in the lake having to undergo a severe drawdown
every five years for inspection. Apparently they decided to fix it this
time, so that now the lake will (hopefuly) not have to be drawn down
below normal winter pool.
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