Science Fair Project Encyclopedia
Dworshak National Fish Hatchery
Dworshak National Fish Hatchery is a "mitigation" hatchery located near Orafino, Idaho. The facility oversees fish returning to spawn on the Clearwater River. The dam at Dworshak blocks access to the historical spawning areas for the steelhead, and it is too steep for a fish ladder.
Both chinook salmon and steelhead trout are spawned at the facility. The hatchery attempts to mitigate or make up for some of the lost spawning area by capturing eggs and fertilizing them. The young fish are raised until they are large enough for release.
Dworshak Dam and Hatchery were named after Henry Dworshak, a Republican Senator from Idaho during 1946–1962.
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10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details