Fish Habitat Restoration
Cascade Mountains, OR (2000)
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This was a joint venture in Oregon between the Dept. of Fish & Game, US Army Corps of Engineers, US Forest Service, and the Bureau of Reclamation to improve the habitat of this stream for endangered salmon. An 8' x 100' closed-ended AquaDam® was used. 
Cascade Mountains, OR
Due to the extreme angle of the hillside where the AquaDams® had to start, a 4' x 40' closed-ended backup AquaDam® had to be placed behind it. Notice the white pipe which runs underneath the 8' high AquaDam®. This allowed the water flow entering the pool to pass through. 
Cascade Mountains, OR
The work area has been dewatered. This picture is looking straight down the bank of a major road that is leaking water through its foundation. During summertime low flows, this vital habitat pool, teeming with thousands of fish, could no longer be regulated because of the severe leakage.
Cascade Mountains, OR
A trench will be dug and filled with soil that will seal the foundation of the roadway to stop the leakage. The man-made culvert gates that extend underneath the road can open and shut to regulate the water flow.
Cascade Mountains, OR