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base levelThe subterranean elevation below which a stream cannot vertically erode sediment. For many streams this hypothetical elevation is sea-level.
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base levelOf a stream is the point below which the stream cannot cut. A temporary base level along a stream, such as a lake may be removed by stream action . Ultimate base level is the ocean.
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base levelthe altitude below which a stream cannot perform vertical erosion. Usually, sea level. Basement Rock: the ancient granitic and metamorphic rock that constitutes continental crust and the continental shield.
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base levelthe lowest elevation to which erosion can take place. Usually sea-level but could be lower if a river drains into an inland sea or lake whose level is below sea-level.
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base levelThe lowest level to which a stream can erode its bed. The ultimate base level of all streams is, of course, the sea.
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base levelThe level below which a stream cannot erode; usually sea level sometimes locally the level of a lake or resistant formation.
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base levelThe level (elevation) at which a stream or river can erode no more, usually sea level.
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base levelThe level (elevation) at which a stream or river can erode no more, usually sea level.
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