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

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84 Groundwater Availability of the <strong>Central</strong> <strong>Valley</strong> <strong>Aquifer</strong>, California<br />

<br />

depth of permeable aquifer material <strong>and</strong> by the quality of the<br />

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-<br />

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-<br />

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-<br />

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NET ANNUAL PUMPAGE AND FLOW THROUGH MULTI-NODE WELLS,<br />

IN MILLIONS OF ACRE-FEET PER YEAR<br />

1.0<br />

0<br />

-1.0<br />

-2.0<br />

-3.0<br />

-4.0<br />

"Variable"<br />

to Dry<br />

Representative water year<br />

Figure B11. Simulated flow through multi-zone wells.<br />

<br />

<br />

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unit (-<br />

<br />

<br />

<br />

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<br />

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2 (Williamson <strong>and</strong> others, 1989). If<br />

<br />

<br />

"Variable"<br />

to Wet Dry Wet Dry<br />

Wet<br />

Typical<br />

WATER YEAR<br />

Dry Wet<br />

"Variable"<br />

to Dry<br />

-5.0<br />

1962 1964 1966 1968 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002<br />

EXPLANATION<br />

Intra-borehole flow<br />

Pumpage

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