What is a discharge area?

This is the area where groundwater seeps up to the soil surface or into streams. Waterlogging and salinity are most likely to occur in these areas.

Discharge areas are generally found lower in the landscape and can be associated with:

  • change in slope gradient (break of slope)
  • texture changes in the soil
  • geological structures and barriers (e.g. faults, dykes, lithology changes)
  • manmade structures such as roads and railway lines which impede normal groundwater flow
  • drainage depressions and other topographic lows.