Breach measurement distance m (Water Overlay): Difference between revisions

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{{Overlay keys|<onlyinclude>
[[File:Wateroverlay_wizard_breach_measurement_distance_m.png|thumb|right|Breach measurement distance m width can be configured in ''Breach Growth'' step of a [[Flooding Overlay]] wizard.]]
{{Overlay keys|type=row|group=Water Overlay
{{Overlay attributes|<onlyinclude>
|key=BREACH_MEASUREMENT_DISTANCE_M
{{Overlay attributes|type=row|overlay=Water  
|attribute=BREACH_MEASUREMENT_DISTANCE_M
|unit=m
|unit=m
|description=Distance behind the breach area for placing a more stable water level measurement.
|description=Distance from the breach area to the automatically placed measurement point for the downstream water level of the breach, in the direction of the breach.
|defaultvalue=100
|defaultvalue=100
|range=
|icon=waterwizard_icon_breach_measurement_distance_m.png
|icon=waterwizard_icon_breach_measurement_distance_m.png
}}</onlyinclude>}}
}}</onlyinclude>}}
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{{article end
{{article end
|notes=
|notes=
* Distance behind the [[Breach (Water Overlay)|breach]] for placing a more stable water level measurement, used in the [[Breach_growth_formula_(Water_Overlay)|Verheij–van der Knaap growth formula]].
* This distance is only taken into account when not using a manual defined [[Breach level area (Water Overlay)|Breach level area]].
* In order to place the measurement the breach area must have a [[Breach_angle_(Water_Overlay)|BREACH_ANGLE]].
* In order to place the measurement the breach area must also have a [[Breach_angle_(Water_Overlay)|BREACH_ANGLE]]. Together they determine the location at which the point of measurement is placed.
* Only when the area behind the breach is lower then the breach level itself the measurement point can be placed. This prevents invalid measurements behind e.g. buildings.
* The downstream water level of the breach is used in the [[Breach_growth_formula_(Water_Overlay)|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]].
|seealso=
|seealso=
* [[Breach flow formula (Water Overlay)]]
* [[Breach flow formula (Water Overlay)]]
* [[Breach model (Water Overlay)]]
* [[Weir formula (Water Overlay)]]
* [[Weir formula (Water Overlay)]]
|howtos=
|howtos=

Latest revision as of 14:42, 29 January 2024

Breach measurement distance m width can be configured in Breach Growth step of a Flooding Overlay wizard.

Notes

  • This distance is only taken into account when not using a manual defined Breach level area.
  • 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