Drainage active (Water Overlay)

Icon	Key	Unit	Range	Description	Default value
	DRAINAGE_ACTIVE	boolean	0 or 1	Whether the drainage is actively pumped.	False

An actively pumped drainage will be able to move groundwater into the open water, even if the surface water level is higher than the ground water level. A passive drainage effectively just allows water flow based on water head differences.

Notes

• The attribute Drainage Overflow Threshold is only used when this attribute is set to true (a value larger than 0).

See also

• Drainage Q (Water Overlay)
• Drainage overflow threshold (Water Overlay)

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Water Module

Water Module

Tutorials

Overview

Theory

Benchmarks

Group

Hydraulic structures

Inlet

Inlet q • Inlet area • Inlet capacity •  Lower threshold •  Upper threshold • Inlet underground

Pump

Pump q •  Lower threshold •  Upper threshold • Pump angle • Pump capacity • Pump area

Culvert

Culvert diameter • Culvert rectangular height • Culvert threshold • Culvert n

Weir

Weir height • Weir width • Weir angle • Weir coefficient • Weir target level

Sewer overflow

Sewer overflow • Sewer overflow speed

Drainage

Drainage q • Drainage datum • Drainage active • Drainage overflow threshold

Output

Object flow output • Object height output • Object datum output a • Object datum output b • Object width output

Related

Building attributes • Hydrological features •  Terrain attributes • Model attributes • Results • Simulation data