many streams in our area have had gravels washing in covering large rocks, I think it can be abated in some areas by using gold dredge type equipment and removing gravel and restoring some areas to the base rock, I know in my area they are looking for hellbenders, if you see any please notify your area biologist, some areas may get hellbenders re-intoduced once they have them figured out...I was lucky to have seen and handled these interesting critters,.