Fish Passage

Recent research suggests that culverts form barriers to the upstream passage of juvenile salmonids, thereby limiting habitat availability. We are conducting hydraulic tests in a full-scale culvert test bed to determine how baffles modify the flow through the culvert and influence its navigability for juvenile salmonids. We are collaborating with biologists from Pacific Northwest National Labs, who are testing fish passage rates directly using stock from an adjacent hatchery.

People: David Thurman, Alex Horner-Devine
Funding: Washington State Department of Transportation

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