Work begins on Issaquah Creek dam replacement

June 11, 2013

By Staff

Work is progressing at last on the replacement of the upper intake dam of Issaquah Creek.

Contractors began staging May 1, according to a news release from Friends of the Issaquah Salmon Hatchery.

Photos by Tom Vaughn Above left, a portion of Issaquah Creek has been rerouted to accommodate installation of a water bypass pipe. Now, no water comes over the dam (above).

Photos by Tom Vaughn
Above left, a portion of Issaquah Creek has been rerouted to accommodate installation of a water bypass pipe. Now, no water comes over the dam (above).

Workers have created an access road to the site and are in the process of laying a bypass pipe so Issaquah Creek water can be diverted around the work area. All creek water was shut off to the hatchery from the upper intake May 15.

There is no water coming over the dam. The fish ladder has been removed and is taking the creek water until the bypass pipe is completed.

All fish have been moved to the ponds on the south side of the hatchery grounds and are being supplied with water from the lower intake pumped uphill. There are 450,000 chinook which should have been gone by now but they’re not quite big enough, so they will be fed for another week before release. You can see 25,000 rainbow in the viewing windows at the hatchery, and 500,000 coho are distributed throughout four ponds.

Hatchery staff have dried and cleaned all of the ponds on the north side.

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