Oak Grove Fork Gravel Augmentation
Aug. 14, 2018
It’s raining gravel at Oak Grove Fork!
Every year, PGE deposits 500 tons of gravel into Oak Grove Fork, allowing the rocks to slowly move downstream and improve the ecosystem below Lake Harriet dam. Gravel provides necessary habitat for macroinvertebrates as well as spawning grounds for the salmon that eat them.
When dams on the Clackamas were constructed decades ago, they cut off the flow of gravel, logs, and other debris, resulting in a river that lacked necessary components of habitat for fish and insects. Today, the annual gravel augmentation restores this essential biological process that was interrupted for so long.
Habitat Improvements on the Clackamas River Featured in Northwest Steelheader Magazine
Aug. 8, 2018
PGE’s Clackamas River downstream fish-passage efforts were recently featured in the summer issue of Northwest Steelheader magazine, put out by the Association of Northwest Steelheaders.
The article, written by Ian Fergusson, is the second in a series discussing fish passage in the Willamette Basin. PGE biologist Garth Wyatt provided quotes and information for the article.
Note: Part 1 of the series can be found on page 8 of the spring issue.