Scour 8
Scour 8 :
To abrade and wear away. Used to describe the weathering away of a terrace or diversion channel or streambed. The clearing and digging action of flowing water, especially the downward erosion by stream water in sweeping away mud and silt on the outside of a meander or during flood events. Channel: A natural stream that conveys water; a ditch or channel excavated for the flow of water
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