Weir height (Water Overlay)

Icon	Key	Unit	Range	Description	Default value
	WEIR_HEIGHT	m + datum		The height of the weir. Water can flow past the weir when the water level exceeds the weir's height.	n/a

This attribute can be defined as values over time, using an array of values defining interpolation-time. This allows users to more dynamically define the height used to allow or deny water flowing across.

Notes

• When using a dynamic WEIR_HEIGHT, a maximum of 10.000 values (5.000 pairs) can be defined.
• When using a target upstream water level, the weir height can adjust automatically during simulation. This behavior can also be configured in combination with a dynamic weir height, but can lead to unexpected behavior. Instead for weirs with a target water level, define the weir height as a single start value.

See also

• Weir formula (Water Overlay).
• Weir height test case (Water Module)
• How to import a time sequence with a CSV

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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