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

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168 Groundwater Availability of the Central Valley Aquifer, California A Water-level difference, in feet, simulated minus estimated (Williamson and others, 1989)— Equal to or less than -50.0 -49.9 to -25.0 -24.9 to 0.0 0.1 to 24.9 25.0 to 49.9 Equal to or greater than 50.0 0 50 100 Miles 0 50 100 Kilometers Shaded relief derived from U.S. Geological Survey National Elevation Dataset, 2006. Albers Equal Area Conic Projection Simulated water-level altitude, in feet. Spring, 1976— Model streams and canals EXPLANATION Active model grid boundary Model water-balance subregion Figure C18. The simulated A, Water-table altitude in spring 1976. B, Potentiometric-surface altitude in spring 1976, for the calibrated transient groundwater-flow model of the Central Valley. Residuals at observation points and areal differences between hand-drawn altitude maps also are shown. Maps showing the simulated water-table altitude and potentiometric-surface altitude in spring of 2000 are shown in and . -160 -120 -80 -40 0 40 80 120 160 200 240 280 320 360 400 440 480 Residual (Observed minus Simulated), in feet— -57.3 to -55 -54.9 to -50 -49.9 to -45 -44.9 to -40 -39.9 to -35 -34.9 to -30 -29.9 to -25 -24.9 to -20 -19.9 to -15 -14.9 to -10 -9.9 to -5 -4.9 to 5 5.1 to 10 10.1 to 15 15.1 to 20 20.1 to 25 25.1 to 30 30.1 to 35 35.1 to 40 40.1 to 45 45.1 to 50 50.1 to 55 55.1 to 60
B Potentiometric-surface difference, in feet, simulated minus estimated (Williamson and others, 1989)— 0 50 100 Miles 0 50 100 Kilometers Shaded relief derived from U.S. Geological Survey National Elevation Dataset, 2006. Albers Equal Area Conic Projection Figure C18. Continued. Equal to or less than -50.0 -49.9 to -25.0 -24.9 to 0.0 0.1 to 24.9 25.0 to 49.9 Equal to or greater than 50.0 Model Calibration and Sensitivity 169 Model streams and canals EXPLANATION Simulated potentiometric-surface altitude, in feet. Spring, 1976— -160 -120 -80 -40 0 40 80 120 160 200 240 280 320 360 400 440 480 Active model grid boundary Model water-balance subregion Residual (Observed minus Simulated), in feet— -57.3 to -55 -54.9 to -50 -49.9 to -45 -44.9 to -40 -39.9 to -35 -34.9 to -30 -29.9 to -25 -24.9 to -20 -19.9 to -15 -14.9 to -10 -9.9 to -5 -4.9 to 5 5.1 to 10 10.1 to 15 15.1 to 20 20.1 to 25 25.1 to 30 30.1 to 35 35.1 to 40 40.1 to 45 45.1 to 50 50.1 to 55 55.1 to 60
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GROUNDWATER RESOURCES PROGRAM Groun
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Groundwater Availability of the Cen
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Foreword An adequate supply of grou
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Contents Chapter A Introduction, Ov
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Chapter C Numerical Model of the Hy
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Figures Chapter A Figure A1. Map of
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Figure B12. Map of altitude of the
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Figure C28. Pie chart and histogram
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Conversion Factors Inch/Pound to SI
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Chapter A. Introduction, Overview o
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- - precipitation. -
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40° 39° 38° 37° 36° 35° Klama
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Texture Model DATA Centralized Geos
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Hydrology Water Well Information Aq
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Table A1. Water-balance subregions
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B Red Bluff 0 50 100 Miles 0 50 100
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Delta and Eastside Streams ).
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for about 30 percent of the annual
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0 50 100 Miles 0 50 100 Kilometers
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A Coast Ranges Clayey lenses Fault
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- the distribution of these pro
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C DEPTH TO MIDPOINT OF INCREMENT, I
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). The southern part, referred , in
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3-D Model of Percentage of Coarse-G
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A Layer 1 EXPLANATION Central Valle
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C Layer Corcoran Clay EXPLANATION C
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E Layer 9 EXPLANATION Central Valle
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Geomorphic province— Basin Delta
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San Joaquin Valley ),
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- Water supplied from aquifers
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C Figure A16. Continued. 3.54% 5.45
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CUMULATIVE DEPARTURE OF PRECIPITATI
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CUMULATIVE DEPARTURE OF STREAMFLOW
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700 500 600 400 200 160 0 50 100 Mi
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B 0 50 100 Miles 0 50 100 Kilometer
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Water Budget per year (
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References Cited 55 -
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References Cited 57 - - 2009, at
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60 Groundwater Availability of the
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Manuscript appproved on April 16, 2
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