Breach measurement distance m (Water Overlay)

Icon	Key	Unit	Range	Description	Default value
	BREACH_MEASUREMENT_DISTANCE_M	m		Distance from the breach area to the automatically placed measurement point for the downstream water level of the breach, in the direction of the flow.	100

Notes

• In order to place the measurement the breach area must also have a BREACH_ANGLE. Together they determine the location at which the point of measurement is placed.
• The downstream water level of the breach is used in the Verheij–van der Knaap growth formula.
• Only when the area behind the breach is lower then the breach level itself the measurement point can be placed. This prevents invalid measurement points, for example when it is placed on top of a building.

See also

• Breach flow formula (Water Overlay)
• Weir formula (Water Overlay)

---

Water Module

Water Module

Tutorials

Overview

Theory

Benchmarks

Group

Model attributes

Model attributes

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 • Extended reconstruction • 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 • Show duration flood level m • Stabilizer angle • Start date ms • Surface water • Surface water evaporation factor • Timeframe times • Timeframes • Unsaturated fraction • Weir dam multiplier • Weir move interval s • Weir move range m • Weir move step m

Related

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