ArcMap, which is a Geographic Information Systems (GIS)-based software program was used to capture spatial and geographical data in order to estimate certain parameters. It was necessary to classify land-use types for each surface within the project area, with 16 different land-use types being used for this project.
Each property had to be classified according to its Water Use Category, such as residential, commercial, or educational, and the measured TWD for each property was also added to the GIS layer.
All the data is added to the GIS layer's attribute table, and can then be added to the TWD model.
GIS Data Collection
TWD Modelling
The Consumption model will be used to estimate the Total Water Demand (TWD). The model can then separate the TWD into its various components parts, including the outdoor and indoor demands. These components will be used for the WSUD models.
Outdoor demand is estimated using measured rainfall and evaporation data.
Indoor demand is estimated by taking the measured TWD and removing the outdoor demand.
Project area with land-use layer
Land-use types
Rainfall and Evaporation data
WSUD
Water Sensitive Urban Design
