California Central Velley Watersheds - NOAA Assessment for Salmon and Steelhead Recovery

This is an excellent source of detailed information published by NOAA Fisheries West Coast Region on their website documenting the historic status and potential for Salmon and Steelhead recovery in the key watersheds throughout the Central Valley.

http://www.westcoast.fisheries.noaa.gov/publications/recovery_planning/salmon_steelhead/domains/california_central_valley/appendix_a_watershed_profiles_7102014.pdf