C.1 Aquifer Editor

The Aquifer Editor is invoked whenever a new aquifer object is created or an existing aquifer object is selected for editing. It contains the following data fields:

• Name: User assigned aquifer name.

• Porosity: Volume of voids / total soil volume (volumetric fraction).

• Wilting Point: Soil moisture content at which plants cannot survive (volumetric fraction).

• Field Capacity: Soil moisture content after all free water has drained off (volumetric fraction).

• Conductivity: Soil's saturated hydraulic conductivity (in/hr or mm/hr).

• Conductivity Slope: Average slope of log(conductivity) vs. soil moisture deficit (porosity minus moisture content) curve (unitless).

• Tension Slope: Average slope of soil tension versus soil moisture content curve (inches or mm).

• Upper Evaporation Fraction: Fraction of total evaporation available for evapotranspiration in the upper unsaturated zone.

• Lower Evaporation Depth: Maximum depth into the lower saturated zone over which evapotranspiration can occur (ft or m).

• Lower Groundwater Loss Rate: Rate of percolation from saturated zone to deep groundwater (in/hr or mm/hr).

• Bottom Elevation: Bottom elevation of aquifer (ft or m).

• Water Table Elevation: Elevation of the water table in the aquifer at the start of the simulation (ft or m).

• Unsaturated Zone Moisture: Moisture content of the unsaturated upper zone of the aquifer at the start of the simulation (volumetric fraction) (cannot exceed soil porosity).

• Upper Evaporation Pattern: Name of the monthly time pattern of adjustments applied to the upper evaporation fraction (optional – leave blank if not applicable).