the film
forum
library
tutorial
contact
Ecology and salmon related articles

Corps Investigation Loss of 200 Adult Steelhead
Below Dworshak; Likely Caused by Hitting Structure

by Staff
Columbia Basin Bulletin, November 18, 2016

Dworshak Dam inundated the largest steelhead habitat in the world.  Downstream is now the largets steelhead hatchery facility in the world. During the past week, approximately 200 dead adult steelhead have been discovered in the tailrace just below the U.S. Army Corps of Engineers’ Dworshak Dam on the North Fork of the Clearwater River.

The exact cause of the mortalities is still under investigation by the Corps, but initial information points to steelhead injuries associated with non-routine upgrades of the Dam’s turbine unit 2, specifically new digital governor commissioning.

The Corps had requested an assessment from U.S. Fish and Wildlife Service staff at Dworshak Fish Hatchery, which found the steelhead mortalities were likely caused by contact with structural features of the turbine unit.

The Corps will be coordinating with appropriate federal and state agencies and other regional fish managers, including Native American tribes.

Related Pages:
Death of 200 Steelhead Linked to Dam Turbine by Staff, Tri-City Herald, 11/16/16
Clearwater Steelhead Go Belly Up Below Dworshak Dam by Rich Landers, Spokesman-Review, 11/17/16
Dworshak Dam Changed Economy by Rich Landers, Clearwater Tribune, 11/16/16


Staff
Corps Investigation Loss of 200 Adult Steelhead Below Dworshak; Likely Caused by Hitting Structure
Columbia Basin Bulletin, November 18, 2016

See what you can learn

learn more on topics covered in the film
see the video
read the script
learn the songs
discussion forum
salmon animation