What is a hole?
A souse hole, or a hole for short, is a place where the current pushes the water over a rock or other underwater obstacle. Other names for it include stopper or hydraulic. The water crashes downward after passing the obstacle. If the water crashes down with enough force, it forms a depression on the surface, which the water surrounding the “hole” will rush in to fill, subsequently being forced down by more water crashing down. Put another way, at a hole, water is being forced down toward the stream bed rather than downriver, and does not continue downstream until it is below the surface. Sometimes it surfaces just to be pulled back in again, which is called recirculation. Think of it as a black hole in the current, where the flow is disturbed and counteracted by the obstacle. [again, description could be improved] Holes can be dangerous, but they can also be fun, too. They can be dangerous because they can hold on to and recirculate any object (wood, boat or paddler) that falls into th
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