The Westport Net Pen coho stock comparison study used CWT groups from 1988-90 broods. One Humtulips code was matched against 2 Satsap Springs CWT groups. Overall adult survival was best for the Humptulips groups but that was partly due to better escapement accounting. For 1988-89 broods, the Satsop groups contributed slightly more to "Grays Harbor Estuary" sport. For 1990 brood Humptulips had a much higher contribution. IMO there isn't a clear standout.