Currently browsing: Columbia River Inter-Tribal Fish Commission

The U.S. Army Corps of Engineers is in the process of revamping the dam’s northern-most fish ladder near the Washington shore at a cost of some $8 million. According to the Corps, the project is changing out a portion of the fish ladder, which spans 800 feet from top to bottom, that was originally a serpentine passage of concrete walls, called baffles, with a newer baffle design more friendly to lamprey.