GE CLST M1A Lecture Notes - Lecture 16: Nonpoint Source Pollution, Southern California, Watershed Management
25 May 2017
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Document Summary
Surface and groundwater supplies; options for meeting future demand; water recycling; use of reclaimed water for agriculture both crops and livestock, introduction to california drought. Ca water use: largest use is for agriculture, using a population of 38 million people, the total use is equivalent to 2290 m3/person-year. Ca water transfers: major aqueducts constructed between 1910 and 1980 ending with the failure of the. Peripheral canal to be authorized by voters: sacramento delta (near san francisco bay) is key to north-south transfers; pumping limitations on quantity; irrigation return water reduces quality of water going to southern. California: southern ca imports 68% of its water, almost all for urban use half the state"s people use. Delta issues: land subsidence, levee failure, flood risk, ecosystem decline invasive species, alteration of estuarine habitat, fish kills by pumping, water supply reliability, water quality. Last california district approves pact on colorado river water.
