Four-rotary-screws.jpg

Four large pieces of metal equipment float in a river near a dam

Photo By/Credit

Steve Martarano/USFWS

Date Shot/Created

12/02/2021

Media Usage Rights/License

Public Domain

Image

Four rotary screw traps at the Red Bluff Diversion Dam provide key information on the status of California’s crucial salmon fishery.

Facility

Red Bluff Fish and Wildlife Office

Ecosystem

River/stream

Species

Oncorhynchus tshawytscha

Subject tags

Anadromous fish

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