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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18 Groundwater Availability of the Central Valley Aquifer, California Water-Balance Subregions - and ). ). Geologic History and Setting - - - (last 10 million years). The only prominent non-sedimentary - materials—mostly clay and silt—compose as much as and Williams, 1995). - - - - - ). The

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 1 2 3 6 4 5 9 7 8 11 12 10 12 14 13 EXPLANATION 16 15 19 17 Geologic History and Setting 19 California Department of Water Resources water-balance subregion and identifier. Water- balance subregion identifier with red highlight indicates subregion receiving deliveries not shown by arrows Major streams and canals Diversion locations Direction of water movement from diversion location, and water-balance subregion affected. Length of arrow does not relate to volume of diversion Figure A8. Distribution of water-balance subregions (WBSs) used for surface-water delivery and estimation of groundwater pumpage. These areas are based on areas defined by the California Department of Water Resources and are used as “virtual farms” for accounting by the Farm Process in the simulation of the hydrologic system of the Central Valley with MODFLOW-2000. WBSs 5, 7, 10, and 13-21 receive surface-water that is not shown in the stream network (non-routed deliveries). 18 20 21

0 50 100 Miles<br />

0 50 100 Kilometers<br />

Shaded relief derived from U.S. Geological Survey<br />

National Elevation Dataset, 2006. Albers Equal Area Conic Projection<br />

1<br />

2<br />

3<br />

6<br />

4<br />

5<br />

9<br />

7<br />

8<br />

11<br />

12<br />

10<br />

12<br />

14<br />

13<br />

EXPLANATION<br />

16<br />

15<br />

19<br />

17<br />

Geologic History <strong>and</strong> Setting 19<br />

California Department of Water Resources<br />

water-balance subregion <strong>and</strong> identifier. Water-<br />

balance subregion identifier with red highlight<br />

indicates subregion receiving deliveries not<br />

shown by arrows<br />

Major streams <strong>and</strong> canals<br />

Diversion locations<br />

Direction of water movement<br />

from diversion location, <strong>and</strong><br />

water-balance subregion affected.<br />

Length of arrow does not relate<br />

to volume of diversion<br />

Figure A8. Distribution of water-balance subregions (WBSs) used for surface-water delivery <strong>and</strong> estimation of groundwater<br />

pumpage. These areas are based on areas defined by the California Department of Water Resources <strong>and</strong> are used as “virtual farms”<br />

for accounting by the Farm Process in the simulation of the hydrologic system of the <strong>Central</strong> <strong>Valley</strong> with MODFLOW-2000. WBSs 5, 7, 10,<br />

<strong>and</strong> 13-21 receive surface-water that is not shown in the stream network (non-routed deliveries).<br />

18<br />

20<br />

21

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