Adult Salmonid Sonar Monitoring Program

Adult Salmonid Sonar Monitoring Program

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Project Goal:

The South Fork Eel River is a salmon and steelhead stronghold and represents the best opportunity to restore wild fish abundance on the North Coast. This stretch of river has been impacted by excessive water diversions in many of its tributaries. Improving stream flows is critical to protecting key life-stages for coho salmon and steelhead survival. The goals are 1) Obtain baseline data on steelhead entering the South Fork Eel River to spawn in order to inform the angling public on steelhead abundance. 2) Determine if sonar assessment of adult salmonids is an appropriate method for Eel River basin status and trends monitoring.


689 square miles monitored

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Project Stages

Implementation

Ongoing

Monitoring

Post Monitoring

Estimated Completion Date:
June 2020

Region:

Project Funders

California Department of Fish and Wildlife

Steelhead Report and Restoration Card program

Fish Affected:

Project Description

To inform our conservation work on the Eel, CalTrout has teamed up with partners to help tally the annual spawning run of Chinook salmon, coho salmon, and steelhead on the South Fork Eel River with a SONAR system. These fish often spawn in muddy and turbid reaches which make it impossible to count fish using traditional spawner surveys. SONAR technology allows us to more accurately monitor salmon which, under past survey techniques, might have been un-detectable. Project partners include CA Department of Fish and Wildlife, CA State Parks, and the California Conservation Corps. The project is funded by the CDFW Steelhead Report and Restoration Card Program.

Project Partners:

California State Parks and California Conservation Corps
California Department of Fish and Wildlife
National Marine Fisheries Service

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