Ground water (Water Overlay)

The ground water mode can be configured in the Rain event step of a Water Overlay wizard.

Icon	Attribute	Unit	Range	Description	Default value
	GROUND_WATER	nominal value		Whether and how water in the ground is simulated during the calculation.	Infiltration Only

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

Notes

• Groundwater Overlays have the ground model active by default. The other Water Overlay variants have the ground model set to infiltration only. This is a recommended setting, trading in an imperceptible 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

• Ground model (Water Overlay)
• Infiltration model (Water Overlay)
• Surface water (Water Overlay)

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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