Elk Creek Watershed Council, Umpqua Basin, Oregon


Andrews Creek Instream Habitat Improvement

After the industrial timberland above Andrews Creek was logged, the Elk Creek Watershed Council and ODFW improved nearly 3/4 mile of coho habitat. Logs donated by the timber company, and boulders from a local quarry, were used to build structures at seventeen sites in 2010. These structures have captured a great amount of sand and gravel, and built up the mostly bedrock channel. In addition to improving spawning and rearing habitat for coho, keeping this sediment in the system will help reduce water temperatures and improve stream flows in the summer.

1/20  Logs donated by the timber company are ready to be placed in the stream with the excavator.
2/20  ODFW Fisheries Biologists during construction.
3/20  Beginning construction on Site #4.
4/20  Adding an old rotting root wad to the structure.
5/20  Site #4 completed. Note the bedrock in the foreground.
6/20  After two winters, the site has captured a huge amount of sand and gravel. The bedrock in the foreground is now spawning gravel.
7/20  This is the view upstream.
8/20  By the end of the summer, vegetation is establishing itself and holding the sand and gravel in place.
9/20  Log and boulder structure at Site #2 - Soon after construction.
10/20  Site #2 after the first winter rains.
11/20  Upstream of Site #2, a long sandbar is forming.
12/20  After the first winter, the stream is narrowing and the bedrock is covered with sand.
13/20  This is the view upstream.
14/20  After two years the streambed looks a lot different.
15/20  View upstream.
16/20  This site near Snail Canyon was augmented with stumps and root wads from logging many years ago.
17/20  After two winters, sand and gravel is being trapped behind the structure.
18/20  After three years, the stream is very different.
19/20  This coastal redwood was planted in the riparian area of the Andrews Creek project.
20/20  The series of beaver ponds near the mouth of Andrews Creek will provide excellent habitat for the juvenile coho emerging from the new spawning areas in the project area.