Terrain water manning (Water Overlay): Difference between revisions

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{{Overlay attribute
[[File:Water_manning.png|150px|right|thumb|none|alt=Alt text|The default value for the WATER_MANNING attribute of surface type "Open land". The user can change this value.]]
|attribute=WATER_MANNING
{{terrain attributes|suppresscategory=true|<onlyinclude>
|unit=s/(m<sup>1/3</sup>)
{{:water manning (Terrain Attribute)}}</onlyinclude>
|terraintype=Surface
|description=The Gauckler–Manning coefficient of the terrain.
|icon=[[File:waterwizard_icon_manning.png]]
}}
}}
===Manning value (terrain)===
[[Terrain]]s have an inherent "roughness", which influences how fast water can flow across the surface. This is known as the Manning coefficient or Manning value.


===Notes===
[[Terrain]]s have an inherent "roughness", affecting the flow of water across their surface, which is expressed by the Gauckler–Manning coefficient or, in short, Manning's value (''n'').
* If a construction is present in the same location, the [[Water manning (Water Overlay)|WATER_MANNING]] value of that construction is used instead.


==How-to's==
{{article end
* [[How-to add and remove an attribute|Add and remove an attribute]]
|notes=
 
* The values for this attribute are clamped between 0.01 and 0.255.
==See also==
* The [[Manning prequel (Water Overlay)|manning value]] can alternatively be provided as a [[prequel]].
* [[Surface flow formula (Water Overlay)|Surface flow formula]]
* The default values for this attribute are derived from online accessible databases{{ref|WikiEngineer}} and are readily [[How to add and remove an Attribute|adjusted]] by the user.
* [[Surface model (Water_Overlay)|Surface model]]
* If a building is present on the terrain, the [[Water manning (Water Overlay)|WATER_MANNING]] value of the building is used instead.
* Only terrains of type '[[Terrain#Surface|surface]]' have an assigned WATER_MANNING.
|seealso=
* [[Surface flow formula (Water Overlay)]]
* [[Surface model (Water Overlay)]]
* [[Water manning (Water Overlay)]]
* [[Manning prequel (Water Overlay)]]
|references=
<references>
{{ref|WikiEngineer
  |name=Manning Roughness Coefficients
  |author=
  |page=
  |source=WikiEngineer (2008-2011)
  |link=http://wikiengineer.com/Water-Resources/ManningRoughnessCoefficients
  |lastvisit=
}}
</references>
}}
{{WaterOverlay terrain attribute nav}}
{{WaterOverlay terrain attribute nav}}
{{Water Module buttons}}

Latest revision as of 11:32, 17 October 2025

Alt text
The default value for the WATER_MANNING attribute of surface type "Open land". The user can change this value.
Icon Attribute Unit Layer Range Description
WATER_MANNING s/(m1/3) Surface The Gauckler–Manning coefficient of the terrain, which is a measure of surface roughness. Used in the surface flow computation of the Water Overlay.

Terrains have an inherent "roughness", affecting the flow of water across their surface, which is expressed by the Gauckler–Manning coefficient or, in short, Manning's value (n).

Notes

  • The values for this attribute are clamped between 0.01 and 0.255.
  • The manning value can alternatively be provided as a prequel.
  • The default values for this attribute are derived from online accessible databases[1] and are readily adjusted by the user.
  • If a building is present on the terrain, the WATER_MANNING value of the building is used instead.
  • Only terrains of type 'surface' have an assigned WATER_MANNING.

See also

References

  1. ↑ Manning Roughness Coefficients ∙ WikiEngineer (2008-2011) ∙ Found at: http://wikiengineer.com/Water-Resources/ManningRoughnessCoefficients
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