Ground water (Water Overlay)

Icon	Attribute	Unit	Range	Description	Default value
	GROUND_WATER	nominal value		Whether and how water in the underground is simulated during the calculation.	n/a

There are a few modes available for the Water Module, dictating how to handle groundwater:

• None. No infiltration, no groundwater flow, no underground evaporation.
• Complete Full groundwater simulation, including infiltration, flow, and evaporation
• Infiltration only Water can Infiltrate into the unsaturated zone only, but no further underground flow or underground evaporation is simulated. The unsaturated zone is simulated to have infinite capacity.

Possible values

• 0: None
• 1: Complete (selected by default for the groundwater overlay)
• 2: Infiltration only (selected by default for the flooding and rainfall overlay)

Notes

• Groundwater Overlays have the underground model active by default. The other Water Overlay variants have the underground model set to infiltration only. This is a recommended setting, trading in an imperceptable amount of accuracy for a more performant calculation setup.
• This setting does not affect water flowing in- and out of the sewer.

How-to's

• How to add and remove an Attribute

See also

• Underground model
• Surface water

---

Water Module

Water Module

Tutorials

Overview

Theory

Benchmarks

Group

Model attributes

Model attributes

Allowed water increase m • Avg shore width m • Avg terrain width m • Avg terrain storage m • Breach measurement distance m • Bridge elevation • Culvert dem threshold m • Design flood elevation m • Extended reconstruction • Ground bottom distance m • Ground bottom pressure m • Ground water • Ground water depth m • Ground watertable with surface • Impact flood threshold m • Impact range m • Increased resolution • Infiltration factor s

Limit area • Limit rain • Max infiltration m • Max water bottom m • Microrelief storage fraction • Min max elevation • Object entry correction • Prequel surface level relative • Rise rate distance m • Sewer overflow threshold • Shoreline • Show duration flood level m • Stabilizer angle • Start date ms • Surface water • Surface water evaporation factor • Timeframe times • Timeframes • Unsaturated fraction • Weir dam multiplier • Weir move interval s • Weir move range m • Weir move step m

Related

Building attributes • Hydrological features • Hydraulic structures •  Terrain attributes • Results • Simulation data