Lec14 - University of California, Berkeley Professor Ken...

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Unformatted text preview: University of California, Berkeley Professor Ken Johnson Civil Engineering 70 Engineering Geology Civil Engineering 70 Lecture 14 10/11/07 Water Resources o Benefits/Concerns o Groundwater Basin o Boundaries o Water Quality o Management o Well Head / Source Water Protection Graded Stream Profile o Baseline Generally sea level o Rivers approach the baseline asymptotically coming from the mountains exponentially o Dams create a new baseline Sediments accumulate behind the dam and creates a new asymptotic baseline Downstream of the dam, there is more erosion as the river t ries to reestablish the graded stream profile. The river t ries to take back the sediments lost behind the dam Alluvial Fan o Where a river hits the base of the hill side Goes from steep to shallow Alluvium is deposited into the flat area o San Francisco Bay is surrounded by an alluvium apron All the flat parts are alluvial fans, sediments coming from the surrounding mountains Drainage Basin o A boundary where water falls and drains in one system o Drainage boundaries are determined by topography Mountains determine where water originates Generally line the apex of mountain peaks...
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This note was uploaded on 04/02/2008 for the course CE 70 taught by Professor Johnson during the Fall '07 term at University of California, Berkeley.

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Lec14 - University of California, Berkeley Professor Ken...

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