Cottonwood Creek is known for the runs of what genus of Pacific salmon?
Cottonwood Creek (Sacramento River):  Because Cottonwood Creek is the largest undammed tributary of the Sacramento River, it is known for its Chinook salmon and steelhead runs. Chinook salmon: The Chinook salmon ("Oncorhynchus tshawytscha") is the largest species in the Pacific salmon genus "Oncorhynchus".
i don't know