Ground infiltration md (Water Overlay): Difference between revisions

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{{Overlay attribute
{{Building attributes
|attribute=GROUND_INFILTRATION_MD
| <onlyinclude>
|unit=m/day
{{Building attributes|type=row|group=Water Overlay
|functionvalue=Ground infiltration per day (m)
|attribute=GROUND_INFILTRATION_MD
|description=The speed at which water can flow vertically from the surface to the underground unsaturated zone.
|unit=m/day
|icon=[[File:waterwizard_icon_water_infiltration.png]]
|functionvalue=Ground infiltration per day
|description=The speed at which water can flow vertically from the surface to the unsaturated zone.
|icon=waterwizard_icon_water_infiltration.png
|range=0 to 10
}} </onlyinclude>
}}
}}
===Porous constructions===
Some [[construction]]s can be porous or open and can allow water to infiltrate into the [[Underground model (Water Overlay)|underground unsaturated zone]]. Examples of such constructions are grass, bushes, trees or specialized roads and parking lots.


The speed at which water can infiltrate is dependent on both the infiltration properties of the constructions as well as on the underlying [[Terrain ground infiltration md (Water Overlay)|surface terrain and underground terrain]]. The infiltration value that will be used in the grid cell will be the minimum value of the infiltration values of the construction, the surface terrain, and the underground terrain. This also means that if any of the infiltration values is 0, water cannot infiltrate into the underground unsaturated zone.
Buildings with a significant GROUND_INFILTRATION_MD are known as porous buildings.


===Notes===
Some [[building]]s can be porous or open and can allow water to infiltrate into the [[Ground model (Water Overlay)|ground unsaturated zone]]. Examples of such buildings are grass, bushes, trees or specialized roads and parking lots.
* Infiltration only takes place when the [[underground model (Water Overlay)|underground model]] is active.


==How-to's==
Infiltration speed depends on the building's [[Ground infiltration per day (Function Value)|infiltration properties]] and the underlying [[Terrain ground infiltration md (Water Overlay)|surface and ground terrain]]. When a building is present, its GROUND_INFILTRATION_MD replaces the surface terrain's value; otherwise, the surface terrain's value is used. The grid cell then takes the lowest of this top-layer value and the ground terrain's GROUND_INFILTRATION_MD. If either value is 0, water cannot infiltrate into the unsaturated zone.
* [[How-to add and remove an attribute|Add and remove an attribute]]


{{WaterOverlay_hydrological_construction_attribute_nav}}
{{article end
{{Water Module buttons}}
|notes=
* Infiltration only takes place when the [[ground model (Water Overlay)|ground model]] is active.
|howtos=
* [[How to add and remove an Attribute]]
|seealso=
* [[Ground infiltration per day (Function Value)]]
* [[Terrain ground infiltration md (Water Overlay)]]
* [[Surface infiltration formula (Water Overlay)]]
* [[Surface model (Water Overlay)]]
* [[Ground model (Water Overlay)]]
* [[Infiltration model (Water Overlay)]]
|api=*[[Api session event editor building set attribute]]
*[[Api session event editor functionoverride set attribute]]
}}
 
{{WaterOverlay hydrological building attribute nav}}

Latest revision as of 07:44, 13 October 2026

Icon Attribute Unit Range Description
GROUND_INFILTRATION_MD m/day 0 to 10 The speed at which water can flow vertically from the surface to the unsaturated zone.

Buildings with a significant GROUND_INFILTRATION_MD are known as porous buildings.

Some buildings can be porous or open and can allow water to infiltrate into the ground unsaturated zone. Examples of such buildings are grass, bushes, trees or specialized roads and parking lots.

Infiltration speed depends on the building's infiltration properties and the underlying surface and ground terrain. When a building is present, its GROUND_INFILTRATION_MD replaces the surface terrain's value; otherwise, the surface terrain's value is used. The grid cell then takes the lowest of this top-layer value and the ground terrain's GROUND_INFILTRATION_MD. If either value is 0, water cannot infiltrate into the unsaturated zone.

Notes

  • Infiltration only takes place when the ground model is active.

How-to's

See also

API Endpoints

Water Module
Water Module
Tutorials
Overview
Theory
Benchmarks
Group
Building attributes
Building height • Critical infrastructure • Ground infiltration md • Root depth m • Sewered • Solid • Water transpiration factor • Water manning • Water microrelief m • Tracer A • Tracer B • Tracer C • Tracer D
Related
Hydrological features • Hydraulic structures •  Terrain attributes • Model attributes • Prequels • Results • Simulation data
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