Give the man a cigar! MR that is the best description of Chehalis Springers I have seen. In the natural state we had Springers outlined by MR, Summers mostly on the Satsop and some other locations, fall which where dispersed all over and Dec returning to the East Satop, Delezen, and Cloquallum. The Chehalis being rain driven allowed the Chinook to develop to varying conditions in the basin. Just as the late Coho primarily came from the East Fork Satsop and Bingham and other tribs this was driven by the dry bed creeks not watering up until the aquafire was fully charged in late Nov and Dec. It is the environmental conditions that created the huge genetic diversity in the Chehalis Basin salmon.