Shoreline (Water Overlay): Difference between revisions

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{{Overlay attribute
{{Overlay attributes|<onlyinclude>
{{Overlay attributes|type=row|overlay=Water
|attribute=SHORELINE
|attribute=SHORELINE
|unit=boolean
|unit=boolean
|description=When a Waterway polygon is not correctly positioned in relation to the DEM this can result in filling up the nearby land with water at the start of the simulation. This will result in a lower water level then is expected from the water level area value. To correct this, a "shoreline" is added at neighbouring cells. At the start of the simulation, these shoreline cells will also be filled with water up to the nearby water level to prevent the initial flush. By default this option is turned on, but can be turned off by changing the attribute to 0. 
|icon=Waterwizard_icon_shoreline.png
|description=Whether to automatically fill cells near a water terrain when there is a mismatch between the extend of the water terrain and the DEM.
|defaultvalue=True
}}</onlyinclude>}}
 
When a Waterway polygon is not correctly positioned in relation to the DEM this can result in filling up the nearby land with water at the start of the simulation. This will result in a lower water level then is expected from the water area value. To correct this, a "shoreline" is added at neighbouring cells. At the start of the simulation, these shoreline cells will also be filled with water up to the nearby water level to prevent the initial flush.
 
<gallery mode=nolines>
File:Wateroverlay_shoreline.png|Water Overlay with shoreline active.
File:Wateroverlay_without_shoreline.png|Water Overlay without shoreline active.
File:Wateroverlay_difference_waterlevel.png|Difference in [[Surface last value result type (Water Overlay)|water level]].
</gallery>
 
{{article end
|notes=
* This option is active by default.
* Shoreline currently only extends to one grid cell in each direction, as can be seen in the images above.
|howtos=
* [[How to add and remove an Attribute]]
}}
}}


==How-to's==
{{WaterOverlay model attribute nav}}
* [[How-to add and remove an attribute|Add and remove an attribute]]
 
{{WaterOverlay_model_attribute_nav}}

Latest revision as of 10:29, 29 January 2024

When a Waterway polygon is not correctly positioned in relation to the DEM this can result in filling up the nearby land with water at the start of the simulation. This will result in a lower water level then is expected from the water area value. To correct this, a "shoreline" is added at neighbouring cells. At the start of the simulation, these shoreline cells will also be filled with water up to the nearby water level to prevent the initial flush.

Notes

  • This option is active by default.
  • Shoreline currently only extends to one grid cell in each direction, as can be seen in the images above.

How-to's