Slide 10 of 19
Notes:
The groundwater model is a lumped-parameter type
- Portions of the formation fed by different catchment areas are assumed to have uniform storage and transmissivity parameters
- Properties are also averaged over depth
- This is different from finite element models like MODFLOW or GMS where there is an analysis grid consisting of a large number of cells
- Simulate interaction between surface water and groundwater
- Recharge to aquifer is mostly from channel losses in streams that flow over outcrop
- Empirical functions were developed by plotting inflows against known recharge determined by USGS
- Inflow is the stream flow at a gauge above the recharge zone plus intervening runoff; intervening runoff is calculated using an areal scaling ratio assuming that conditions are the same for catchment and intervening regions
Used historical pumping data
