Blog: Using sonar to count fish on the Eel River
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 camera.