D.2 Domain

The demonstration model is located in New Zealand. It uses publicly available base data sets where available (with some of these being modified on occasion), and synthetic data otherwise.

The catchment has:

  • An area of approximately 55km\(^2\)
  • A relief of approximately 20m
  • Three (synthetic) land uses
    • Urban
    • Forest
    • Agriculture

The general arrangement of the catchment is presented in Figure D.1.

**TUFLOW CATCH demonstration model: catchment**

Figure D.1: TUFLOW CATCH demonstration model: catchment

The receiving waterway (which is a hypothetical lake) has:

  • An area of approximately 1km\(^2\)
  • A maximum depth of approximately 12m
  • Two major riverine tributaries
  • Two local wastewater treatment plant discharges
  • One offtake
  • An overflow outlet weir

The general arrangement of the receiving waterway is presented in Figure D.2.

**TUFLOW CATCH demonstration model: receiving waterway**

Figure D.2: TUFLOW CATCH demonstration model: receiving waterway

The domain is simulated under TUFLOW CATCH for a period of 1 week from 01/01/2021 to 07/01/2021, inclusive.