The hatchery production in the GH watershed is small enough that the H+W=50% seldom comes into play. In the case of Chum yes but only due to the extrapolation across all streams of the enhanced numbers which is District 17 mismanagement of escapement. In the Hump yes as between 30% to 50% of the naturally spawning Chinook in any given year are of hatchery origin. Coho is thought to be worse but District 17 still does not care to turn loose of the numbers. Also in the Chehalis the 300k Coho hatchery smolt in the upper basin is Skook mitigation. The East Fork Satsop Chinook numbers the broodstocked Chinook releases are small enough to not be a factor unless you fail to break down the East Folk Satsop spawners and mathematically subtract them from the spawners of natural origin, which is not done.

Bottom line is the Chehalis side hatchery production is a problem due to the abuse by District 17. Now the Humptulips is totally different because if they managed only for the natural origin, and not combine the hatchery strays in the natural spawner escapement, then severe restrictions would need to be put in place.