The Petaluma River Watershed hosts several federally endangered animals including the salt marsh harvest mouse (Reithrodontomys raviventris) and California clapper rail (Rallus longirostris obsoletus).
Endangered flora include soft bird’s-beak (Cordylanthus mollis ssp.
mollis), Baker’s stickyseed (Blennosperma bakeri), Burke’s goldfields (Lasthenia burkei), showy Indian clover (Trifolium amoenum), North American River Otter (Lontra canadensis), and  Sebastopol meadowfoam (Limnanthes vinculans).

Steelhead (Oncorhyncus mykiss) that spawn and rear in the Petaluma River watershed are wild, not hatchery, stock.
Chinook salmon (Oncorhynchus tshawytscha) are seen in the main stem of the Petaluma River and The United Anglers of Casa Grande High School have seen chinook at the turning basin, near the Lynch Creek confluence.
The high school students constructed a salmonid hatchery in 1993 and in 2002 74 Chinook salmon returned to spawn in the Adobe Creek tributary.
The Petaluma River Watershed hosts several federally endangered animals including the salt marsh harvest mouse (Reithrodontomys raviventris) and California clapper rail (Rallus longirostris obsoletus). Endangered flora include soft bird’s-beak (Cordylanthus mollis ssp. mollis), Baker’s stickyseed (Blennosperma bakeri), Burke’s goldfields (Lasthenia burkei), showy Indian clover (Trifolium amoenum), North American River Otter (Lontra canadensis), and  Sebastopol meadowfoam (Limnanthes vinculans).
Steelhead (Oncorhyncus mykiss) that spawn and rear in the Petaluma River watershed are wild, not hatchery, stock. Chinook salmon (Oncorhynchus tshawytscha) are seen in the main stem of the Petaluma River and The United Anglers of Casa Grande High School have seen chinook at the turning basin, near the Lynch Creek confluence. The high school students constructed a salmonid hatchery in 1993 and in 2002 74 Chinook salmon returned to spawn in the Adobe Creek tributary.
Petaluma River