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Aviemore Dam
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Lake Aviemore was first investigated as a hydro-generation option in the
early 1920s but construction of the dam and power station did not begin
until 1962.
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The dam has both earth and
concrete sections. |
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Concrete sections incorporate
the intakes, powerhouse, spillway and sluices. It is made of 18 separate
blocks containing a million tonnes of material. |
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The earth section contains
about 1.2 million cubic metres of material; it has an impervious clay
central core supported, both upstream and downstream, by massive shoulders
of compacted sand, gravel and rock. |
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The spillway allows water to
bypass the powerhouse and can cope with a flow of 3,700 cubic metres per
second, a "once-in-a-thousand-years" flood. |
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A fish spawning race allows
trout to migrate upstream from Lake Waitaki to spawning grounds close to
the dam. Up to 3,000 adult trout can be accommodated in the race. |
Key statistics
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Lake Aviemore area: about 29
square kilometres |
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Length of dam: 760 metres |
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Length of concrete section: 330
metres |
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Nominal annual generation: 900
GWh |
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Installed capacity: 220 MW |
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