It would surprise me that the Grays has much of anything wild in it. When I worked in the watershed it was hellishly unstable. The bridge at the hatchery used to something like 10' or more above the river. Last time I was there the bottom was up to the bridge in places and well filled for the rest. If, in unstable stream like that, the steelhead are doing well (or what passes for well in WA) then those are damn tough fish.