Using Sonar to Count Fish on the Eel River

California Trout —

The South Fork Eel River is a salmon and steelhead stronghold and represents the best opportunity to restore wild fish abundance. 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.

To inform our conservation work on the Eel, CalTrout has teamed up with partners on this new project – The Adult Salmonid Sonar Monitoring Program –  to tally the annual spawning run of Chinook salmon, coho salmon, and steelhead on the South Fork Eel River with a Sound Metrics Dual Frequency Identification Sonar (DIDSON) camera.

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