Fish Monitoring

Fish Barrier Removal

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Napa RCD conducts fish monitoring in the Napa River watershed.

We to collect information about native fish populations with emphasis on two salmonid species – steelhead trout (Oncorhynchus mykiss) and Chinook salmon (Oncorhynchus tshawytscha).

General Info

Napa RCD conducts fish monitoring in the Napa River watershed to collect information about native fish populations with emphasis on two salmonid species – steelhead trout (Oncorhynchus mykiss) and Chinook salmon (Oncorhynchus tshawytscha).

Our monitoring program includes capturing and counting juvenile salmonids as they out-migrate to the ocean as “smolts”, counting adult fish and mapping their spawning distributions, observing juveniles through snorkeling surveys, and long-term tracking of individual fish with implanted tags. Napa RCD has deployed an 8-foot diameter rotating fish trap (aka rotary screw trap) in the lower Napa River each year since 2009 to capture young steelhead and salmon as they leave for the estuary and ocean.

Want to support our monitoring program?

Napa RCD’s fisheries monitoring program is made possible in part by generous donations from people like you. If you would like to contribute to local fish science, please contact Martin Perales, or visit our donation page.