fish passage

A new technology could be a cost effective, simple way to help salmon. The U.S. Army Corps of Engineers has installed “fish bubblers” at several dams on the Columbia and Snake rivers.

(Runtime 0:59) Fish counters are seeing thousands of lamprey going past the Bonneville Dam on the Columbia River. But tribal biologists say these toothy,…

Two Pacific lamprey have made history. The eel-like fish have made it past the Soda Springs Dam on Oregon’s North Umpqua River.