groundwater flow and transport model seaside groundwater basin ...

Seaside Model Report
October 26, 2007
Contents
Table of Contents
1.0 Introduction ..........................................................................................................1
1.1 Purpose and scope of report.........................................................................1
1.2 Description of study area .............................................................................1
1.2.1 Physiographic features.....................................................................1
1.2.2 Hydrogeologic features....................................................................2
1.2.3 Basin boundary ................................................................................3
1.2.4 Cultural features...............................................................................4
1.2.5 Water use .........................................................................................5
1.2.6 Groundwater conditions...................................................................5
1.3 Model code used ..........................................................................................6
2.0 Data used ..........................................................................................................9
2.1 Previous work ..............................................................................................9
2.2 Hydrogeologic information..........................................................................9
2.3 Well inventory ...........................................................................................10
2.4 Groundwater levels ....................................................................................11
2.5 Groundwater pumping ...............................................................................11
2.6 Groundwater recharge................................................................................11
2.6.1 Prior investigations ........................................................................11
2.6.2 Satellite-image analysis .................................................................12
3.0 Model development ...............................................................................................15
3.1 Model assembly .........................................................................................15
3.1.1 Finite-element mesh.......................................................................15
3.1.2 Time step, simulation periods, and unit dimensions......................16
3.1.3 Recharge volumetric and solute fluxes..........................................17
3.1.4 Pumping volumetric and solute fluxes...........................................18
3.1.5 Boundary conditions ......................................................................19
3.1.6 Initial conditions ............................................................................21
3.2 Aquifer-parameter identification ...............................................................22
3.2.1 Identification approach ..................................................................22
3.2.2 Calibration results ..........................................................................25
4.0 Model simulations of future conditions .................................................................27
5.0 Conclusions ........................................................................................................28
6.0 References cites .....................................................................................................29
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