Originally Posted by Plateau Angler
Someone correct me if I'm wrong, but I believe a buffer was put in the water below the cascades when the poison arrived from upstream. The buffer countered the poison making it harmless to anything further downstream...Shouldn't have lost many if any fish below there...
I think this is right. I know they use a blocker with rotanone (sp?), but not sure if they used that chemical or something else on this project.