Expose Scour
Scour Technical Terms
Scour: (a) The powerful and concentrated clearing and digging action of flowing air, water, or ice, especially the downward erosion by stream water in sweeping away mud and silt on the outside curve of a bend, or during the time of a flood; a process. (b) A place in a stream bed swept (scoured) by running water, generally leaving a gravel bottom. GG