5-9 - Surface Water Surface runoff: rainfall that does not...

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Surface Water Surface runoff: rainfall that does not sink into ground. Stream: a specific waterway for flowing water. Ponds and lakes: bodies of water where runoff collects. Water in most streams ends up in the ocean. Some streams empty in lakes, which may empty to the ocean through other rivers. Some streams empty into enclosed basins that do not connect with the ocean. Parts of a Stream Begin at a source , such as a spring, glacier, lake or smaller streams. Flow downslope towards ocean, lake or larger river. Where a river enters larger body of water is the mouth . Stream Profile Gradient: change of elevation vs. distance. Faster flow on steeper gradients Erode down towards base level. Base level at mouth. Effect of Flow Velocity Fast flow (high energy) produces erosion and transport Faster flow = more erosion and transport of larger particles Slow flow (low energy) leads to deposition As flow velocity drops, smaller and smaller particles deposited Stream Order First order: single stream from a non- stream source
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This note was uploaded on 02/14/2009 for the course GEOL 105 taught by Professor Kohut during the Spring '08 term at University of Delaware.

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5-9 - Surface Water Surface runoff: rainfall that does not...

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