Page 4 - Beaumont Basin Watermaster

Beaumont Basin Watermaster
2013 Reevaluation of the Beaumont Basin Safe Yield 3-Apr-15

4.1 Groundwater Recharge ................................................................................................... 22

4.1.1 Areal Recharge........................................................................................................ 22

4.1.2 Groundwater Recharge within Unlined Stream Channels ...................................... 22
4.1.3 Subsurface Inflow from Outside the Study Area .................................................... 23

4.1.4 Subsurface Inflow from the Mountain Block ......................................................... 23
4.1.5 Return Flow ............................................................................................................ 24

4.1.6 Artificial Recharge .................................................................................................. 26

4.2 Groundwater Discharge.................................................................................................. 27
4.2.1 Groundwater Pumping ............................................................................................ 27

4.2.2 Evapotranspiration .................................................................................................. 27
4.2.3 Underflow Out of the Study Area ........................................................................... 28

5.0 Groundwater Flow Model................................................................................................... 29

5.1 Conceptual Model .......................................................................................................... 29
5.2 Description of Model Codes .......................................................................................... 29

5.3 Model Size and Grid Geometry ..................................................................................... 30

5.4 Boundary Conditions...................................................................................................... 30
5.5 Aquifer Characteristics ................................................................................................... 31

5.5.1 Layer Elevations ..................................................................................................... 31
5.5.2 Hydraulic Conductivity ........................................................................................... 31

5.5.3 Specific Yield and Storativity ................................................................................. 31
5.6 Groundwater Pumping ................................................................................................... 32

5.7 Evapotranspiration ......................................................................................................... 32

5.8 Groundwater Recharge ................................................................................................... 33
5.8.1 Recharge Package ................................................................................................... 33

5.8.2 Streamflow Routing Package .................................................................................. 33

5.9 Model Calibration .......................................................................................................... 34
5.9.1 Calibration Process ................................................................................................. 34

5.9.2 Transient Model Calibration Results ...................................................................... 34
6.0 Analysis of Safe Yield .......................................................................................................... 36

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