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rainfall and fresh water inflow, particularly as one mover south 

 along the coastline. The availability of fresh and brackish water 

 for increasing up-stream agricultural irrigation, domestic, and 

 industrial uses will therefore be considerably different in the two 

 coastal areas of Louisiana and Texas. This in turn will affect the 

 desired quality and quantity of water, and Increase the management 

 problems faced by local, State and Federal Governments. 



The Pacific Southwest Biophysical Region 



Two of the three California OBE coastal economic areas located in 

 the Southwest biophysical region have sustained phenomenal growth, 

 both in population and economic activity. The manufacturing activi- 

 ties of both the Southern California and Central California coasts 

 are well diversified and expanding. Most of these developments are 

 dependent on estuarine natural resources, primarily for port facili- 

 ties and for some oil extraction in the Southern California Coast. 

 However, tremendous pressure on remaining coastal open space for 

 housing and development already exists and will Inevitably increase 

 in the future. 



The Southern California coast area is water-scarce and dependent 

 for its supply on sources outside the area. Central California's 

 major estuary, San Fransicso Bay, will be affected by these Southern 

 California water demands. The California Water Plan, which calls 

 for significant diversion of fresh water inflow, presents major 

 problems of water quality management for this area. 



