Soil water retention curve (Water Overlay)

Icon	Attribute	Unit	Range	Description	Default value
	SOIL_WATER_RETENTION_CURVE	m		Setting a Soil Water Retention Curve retains a fraction of the water in the Unsaturated Zone.	0

This can be done via the Van Genuchten-Mualem formula:

$K(t)=Ks*sqrt(Se)*{1-(1-S{e}^1/m}^m$

Notes

• This is still BETA functionality, disabled by default (value=0).
• For Van Genuchten-Mualem select 1.

How-to's

• How to add and remove an Attribute

See also

• Ground infiltration formula (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 • 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 • Duration min level m • Stabilizer angle • Start date ms • Surface water • Surface water evaporation factor • Timeframe times • Timeframes • Trim manning • Trim evapotranspiration • Trim root depth • Trim ground infiltration • Trim ground conductivity • Trim shoreline conductivity

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