Tracer flow model (Water Overlay)

Chemicals can be modeled in the hydrological model, as quantities picked up and carried along with the water.

The chemical model can be implicitly activated and deactivated by having construction in the project area have the appropriate attributes configured. If no constructions have attributes configured to interact with the quantities of chemicals, then no chemicals are computed.

Chemicals are tracked as an exact amount on a given location. The substances are generically defined and do not have a set unit or magnitude.

Chemicals are added to the hydrological model and removed from the hydrological model by chemical emitters and decomposers. The chemicals created are then placed on the surface of the cells where they are created. Chemicals can also be removed by chemical constructions, if their attributes are configured appropriately. When chemicals enter the cell which contains a chemical decomposer, the chemicals are removed from the hydrological model.

When water moves from a cell which also contains chemicals, the chemicals are carried along with the water. The chemicals are uniformly distributed between the water which remains in the cell, which flows to other cells, and which infiltrates. Water which flows into the sewer explicitly cannot carry chemicals along with it.