Terrain water (Water Overlay): Difference between revisions

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{{Overlay attribute
{{terrain attributes|suppresscategory=true|<onlyinclude>
|attribute=WATER
{{:Water (Terrain Attribute)}}</onlyinclude>
|unit=boolean
|terraintype=Surface
|description=Whether the specified terrain is a water terrain.
}}
}}
====Water====
Water terrains are processed by the water model in a specific manner during the initialization phase, which takes place before a simulation is started. For each water terrain in the project area, the bottom of the water body is treated as a land surface in the same fashion as dry land. Water is then placed on it on the [[Surface model (Water Overlay)|surface layer]], up to the level defined by the [[Water level area (Water Overlay)|WATER_LEVEL]] attribute of the overlapping [[Water level area (Water Overlay)|water level area]]. Terrains not marked as water terrain are not initiated with water.


Terrains marked as water are subject to an additional check for the [[Waterstress result type (Water Overlay)|WATER_STRESS result type]]. If the amount of water on a water terrain has not increased by more than [[Allowed water increase m model attribute (Water Overlay)|ALLOWED_WATER_INCREASE_M]] relative to the water level of the water level area, that terrain will not count as stressed for that result type. The amount of water on that location must be at least the value of ALLOWED_WATER_INCREASE_M more than the water level of the water level area.
Water terrains are processed by the water model in a specific manner during the initialization phase, which takes place before a simulation is started.  


==How-to's==
For each water terrain in the project area, the bottom of the water body is treated as a land surface in the same fashion as dry land. Water is then placed on it on the [[Surface model (Water Overlay)|surface layer]], up to the level defined by the [[Water area (Water Overlay)|WATER_LEVEL]] attribute of the overlapping [[Water area (Water Overlay)|water area]]. Terrains not marked as water terrain are not initiated with water in this fashion.
* [[How-to add and remove an attribute|Add and remove an attribute]]
 
Terrains marked as water are subject to an additional check for the [[Water stress result type (Water Overlay)|water stress result type]]. If the amount of water on a water terrain has not increased by more than [[Allowed water increase m model attribute (Water Overlay)|ALLOWED_WATER_INCREASE_M]] relative to the water level of the water area, that terrain will not count as stressed for that result type. The amount of water on that location must be at least the value of ALLOWED_WATER_INCREASE_M more than the water level of the water area.
 
{{article end
|notes=
* In contrast to the effect of [[water area (Water Overlay)|water area]]s on water, [[inundation area (Water Overlay)|inundation area]]s do not initialize water terrains with water in the fashion that they do with non-water terrains.
|howtos=
* [[How to add and remove an Attribute]]
|seealso=
* [[Surface water level formula (Water Overlay)]]
* [[Surface model (Water Overlay)]]
}}
{{WaterOverlay terrain attribute nav}}
{{WaterOverlay terrain attribute nav}}

Latest revision as of 15:32, 27 February 2024

Icon Attribute Unit Layer Range Description
WATER nominal Surface Whether this Terrain Type represents a form of water (and what type).

Water terrains are processed by the water model in a specific manner during the initialization phase, which takes place before a simulation is started.

For each water terrain in the project area, the bottom of the water body is treated as a land surface in the same fashion as dry land. Water is then placed on it on the surface layer, up to the level defined by the WATER_LEVEL attribute of the overlapping water area. Terrains not marked as water terrain are not initiated with water in this fashion.

Terrains marked as water are subject to an additional check for the water stress result type. If the amount of water on a water terrain has not increased by more than ALLOWED_WATER_INCREASE_M relative to the water level of the water area, that terrain will not count as stressed for that result type. The amount of water on that location must be at least the value of ALLOWED_WATER_INCREASE_M more than the water level of the water area.

Notes

  • In contrast to the effect of water areas on water, inundation areas do not initialize water terrains with water in the fashion that they do with non-water terrains.

How-to's

See also

Water Module
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Water Module
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Tutorials
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Overview
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Theory
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Benchmarks
Group
Terrain attributes
Ground infiltration md •  Hydraulic conductivity md •  Hydraulic conductivity with thickness md •  Root depth m •  Water •  Water evaporation factor •  Water manning •  Water microrlief m •  Water storage percentage
Related
Building attributes • Hydrological features • Hydraulic structures • Model attributes • Results • Simulation data
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