November 22, 2010
"font-size: 14pt">It sounds far fetched but, in essence, that's the technology being tested by Chelan County
PUD at its Chiwawa and Eastbank Hatcheries . Hatchery managers told Commissioners this week that an effort to save
water seems to be producing juvenile salmon and steelhead that appear stronger and travel faster to the ocean.
"font-size: 14pt">They've turned to circular tanks of fiberglass, with a constant recirculating water flow. The
circular current helps dispose of waste more efficiently at a central drain, and the system requires only about
one-eighth the water of a standard hatchery raceway.
circular current, managers say the system seems to be producing fish that are stronger and make it downstream
faster. Click above for the explanation from fish biologist Josh Moraskas…
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trying to develop new facilities so it can move away from using the antiquated Eastbank Hatchery facilities on
Turtle Rock Island just north of Rocky Reach Dam in the Columbia River.
produce hatchery fish as part of its “no-net-impact” requirement in Habitat Conservation Plans for
Rocky Reach and Rock Island dams.