C.2 Groundwater concentrations

Groundwater concentration data fields have the following properties:

• Content:
  • Reports the temporally and spatially varying concentration of a dissolved or particulate pollutant in groundwater associated with soil layer N (N = 1, 2, …)
• Name:
  • “GW Layer <Layer number> Conc <pollutant_name>”, e.g. “GW Layer 1 Conc PFAS”
• Units:
  • See Section 4.5.3.3.3 and Table 4.1, “Map output concentration” column

These fields are reported at all TUFLOW HPC cells for all simulated constituents that are listed within pollutant export material blocks. Constant and timeseries pollutants are not reported because they are assigned only during boundary condition writing, rather than being simulated in the catchment domain. These GW Layer data fields will be zero at all times and locations for a given pollutant <name> if its infiltration has been set to off via

Infiltration <name> == OFF