Central Valley Aquifer, Chapters A and B - MAE Class Websites

Central Valley Aquifer, Chapters A and B - MAE Class Websites Central Valley Aquifer, Chapters A and B - MAE Class Websites

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46 Groundwater Availability of the Central Valley Aquifer, California Surface Water - ( - ). North much smaller ( - - acre-ft/yr ( ). - - ). ). - - - - - but also is controlled by other factors. These factors may

CUMULATIVE DEPARTURE OF STREAMFLOW DIVERSION, IN ACRE-FEET PER YEAR 300 200 100 0 -100 -200 Cool (Negative) Warm (Positive) Cool (Negative) "Variable" to Dry "Variable" to Wet - ). In addition, Dry Wet Dry TIME, IN YEARS Groundwater Hydrogeology 47 "Variable" to Dry 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 Cool (Negative) EXPLANATION Periods of Pacific Decadal Oscillation [PDO] (Mantua, 2006) Bear River Diversion cumulative departure average Cumulative annual temperature difference, 1964-2003 Pacific Decadal Oscillation (PDO) average annual value Figure A19. Cumulative departure of streamflow diversions from the Bear River by South Sutter Water District, California; cumulative annual temperature from California Irrigation Management Information System’s (CIMIS) stations at Davis and the Pacific Decadal Oscillation (PDO) index, 1960–2004. Wet -2.0 -4.0 -6.0 - 6.0 4.0 2.0 0.0 CUMULATIVE ANNUAL TEMPERATURE DIFFERENCE, IN DEGREES FAHRENHEIT PDO-INDEX, UNITLESS

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