Behavior of ultrasonic tagged chinook salmon and steelhead trout migrating past Hanford thermal discharges (1967)

Ultrasonic tagged, adult chinook salmon and steelhead trout were tracked in the Columbia River in 1967 during upstream migration past cooling water discharges from nuclear reactors. All fish migrated near shorelines, showing preference for the river bank opposite reactors. Clear responses to local temperaature differences were exhibited by few fish, these responses being to small shoreline seepages rather than to main centerchannel outfalls. (auth