Napa County Resource Conservation District 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). This monitoring program includes:
- capturing and counting juvenile salmonids as they migrate to the ocean as “smolts”,
- counting adult salmonids and mapping their spawning distributions,
- observing juvenile salmonids through snorkeling surveys, and
- long-term tracking of salmonid individuals with implanted radio tags.
View reports from previous years
Want to learn more about our fisheries monitoring program and what the RCD has learned about fish so far? We’ve compiled answers to FAQs about our fisheries monitoring program in this handy fact sheet.