Fish Passage Tour

Salmon are the most well-known species that migrate up and down Northwest streams and rivers. When young salmon (smolts) migrating downstream encounter a hydroelectric project, they will either pass over a SPILLWAY, through the TURBINE area, are TRANSPORTED around a dam, or enter a BYPASS SYSTEM.

Adult salmon migrating upstream will most often use a FISH LADDER as they journey to their spawning grounds.

Graphic adapted from U.S. Army Corps of Engineers: Northwestern Division