Anadromous fish do not make their way into Cold Creek, but Cold Creek is a tributary to Putah Creek, which does have salmon and steelhead.  Water quality in Cold Creek (including impacts from fire) has a direct impact on water in Putah Creek and on the organisms that rely on Putah Creek.  Chinook salmon (Oncorhynchus tshawytscha) and steelhead trout (Oncorhynchus mykiss) return to Putah Creek to spawn after spending several years in the ocean, and are dependent on cool, clear water free of contaminants for their survival.

In November, I watched Chinook salmon traveling up Putah Creek in downtown Winters, just under the old railroad bridge.  I made some sketches onsite:

And then developed a more detailed depiction of the scene at home: