Fish ladders are also imperfect. Anglers know this, as we fish the deep pools created at the bottoms of dams -- many fish will stage/rest there, and some will s

Fish ladders are also imperfect. Anglers know this, as we fish the deep pools created at the bottoms of dams -- many fish will stage/rest there, and some will simply get stuck there. They also don't solve the problem where dams slow and warm the waters running through them. Trout and Salmon need cold water to survive.