Polygon extraction - spatial summation of consumption category area polygons

With this method, the total demand at each junction node is calculated by summing all of the individually assigned demand categorization polygons into a single demand field.

The polygon extraction process is generally applicable in those instances where demand area polygons have already been intersected with a land base or other class/classification polygon boundary. This means that consumption data is already integrated with demographic information and InfoWater Pro Allocator provides the necessary tools to distribute demands to the designated junction nodes.