Ground bottom pressure m (Water Overlay)

The ground bottom pressure m setting can be configured in the Bottom boundary step of a Water Overlay wizard, when the ground water mode set to Complete.

Icon	Attribute	Unit	Range	Description	Default value
	GROUND_BOTTOM_PRESSURE_M	m		Optional: The additional head of higher areas outside the project causing water to flow in or out of the ground from deeper ground layers through the bottom boundary.	0

This optionally fluctuating bottom pressure is added to the spatially defined Bottom pressure and resistance, to calculate ground bottom flow.

This attribute can be defined as values over time, using an array of values, defined as pairs of the start-time and its value from that point on.

Notes

• Only configurable when the ground water mode is set to Complete.

How-to's

• How to add and remove an Attribute

See also

• Bottom resistance prequel (Water Overlay)
• Bottom pressure prequel (Water Overlay)
• Ground model (Water Overlay)#Ground bottom flow
• Ground bottom flow result type (Water Overlay)
• Ground bottom flow formula (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