We caught quite a few Green River Springers. For two + seasons we had good returns and caught them both in the lower river below Flaming Geyser through Soos , as well as in the canyon all the way up to the RR below Howard Hanson. As I recall, It was good enough to allow a fishing while floating change to the summer fishing regs.

They were quite aggressive and eager to hit a variety of gear from eggs and floats in the deep pools of the canyon to plugs, drift gear, and a few takers on flys from icy creek down through the Argus Ranch area.