Prequel surface level relative (Water Overlay)

Icon	Attribute	Unit	Range	Description	Default value
	PREQUEL_SURFACE_LEVEL_RELATIVE	boolean		Whether the SURFACE_LEVEL prequel is considered relative instead of a datum height.	0

When positive, the SURFACE_LEVEL prequel is considered relative instead of a datum height.

Notes

• This Attribute is by default set to 0 which means the SURFACE_LEVEL prequel is datum height.
• When set to 1 the SURFACE_LEVEL prequel is relative height.

How-to's

• How to add and remove an Attribute

See also

• Surface level prequel (Water Overlay)

API Endpoints

• Api session event editor overlay set attribute

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