Water area (Water Overlay): Difference between revisions

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A [[Water_level_area_(Water_Overlay)|water level area]] represents real-world water level areas. Within a water level area, the heights of all water [[terrain]]s are set to a specified level. {{RequestImage|description=An image (before)showing a terrain with part of it marked as water terrain. A second image (after) showing the same terrain, with the water terrain no longer specially marked but with a quantity of water on top. Both images have one valley marked as water terrain and another one which is regular terrain.}}
A Water area is a means to specify the initial water level for large sections of your project area. This initial water level is only applied to [[terrain water (Water Overlay)|water terrain]]s. The datum height of the water level is assumed to be equal within the water area.
{Overlay attribute
 
|attribute=[[Water_level_(Water_Overlay)|WATER_LEVEL]]
If no water areas are present, no water is initialized in the water terrains. Waterways and other water bodies will be dry at the start of the simulation (unless an [[Inundation area (Water Overlay)|inundation area]] is present, which performs a similar function).
|unit={{mdatum}}
 
|description=The water level for all water terrains in this water level area
If the [[Ground model (Water Overlay)|ground model]] is active, and no [[Groundwater Prequel (Water Overlay)|groundwater prequel]] is present, the ground watertable is initialized at the height defined by the water area.
|defaultvalue=n/a
 
|icon=[[File:waterwizard_icon_water_area.png]]
{{Overlay keys|suppresscategory=true|
{{:Water level (Water Overlay)}}
{{:Water relative (Water Overlay)}}
}}
}}
If no water level area is present in the project, the water level on water terrains is assumed to be extremely low. This allows water to flow into the open water areas at all times.
 
{{article end
|notes=
* A water area represents real-world water areas.
* Grid cells are marked as water by an overlapping [[terrain water (Water Overlay)|water terrain]]. If a grid cell is marked as water, but is not covered by a water area, the grid cell will not be initialized with water from water areas.
* For waterways with a steep decline, using a single water area to define the water level might not suffice, since the level is a datum height, not a relative offset from the bottom. Alternatives, such as staggered water areas, [[Inundation area (Water Overlay)|inundation area]]s, or initializing the waterway dry, should be considered.
|seealso=
* [[Inundation area (Water Overlay)]]
* [[Surface model (Water Overlay)]]
* [[Surface water level formula (Water Overlay)]]
* [[Surface level prequel (Water Overlay)]]
}}
{{WaterOverlay hydrological features nav}}

Latest revision as of 15:41, 26 January 2024

A Water area is a means to specify the initial water level for large sections of your project area. This initial water level is only applied to water terrains. The datum height of the water level is assumed to be equal within the water area.

If no water areas are present, no water is initialized in the water terrains. Waterways and other water bodies will be dry at the start of the simulation (unless an inundation area is present, which performs a similar function).

If the ground model is active, and no groundwater prequel is present, the ground watertable is initialized at the height defined by the water area.

Icon Key Unit Range Description Default value
Waterwizard icon water level.png WATER_LEVEL m + datum or m above datum The water level for all water terrains in this water area. n/a
Waterwizard icon water relative.png WATER_RELATIVE boolean Determines if the water level for all water terrains in this water area is set to a relative or a datum height. n/a

Notes

  • A water area represents real-world water areas.
  • Grid cells are marked as water by an overlapping water terrain. If a grid cell is marked as water, but is not covered by a water area, the grid cell will not be initialized with water from water areas.
  • For waterways with a steep decline, using a single water area to define the water level might not suffice, since the level is a datum height, not a relative offset from the bottom. Alternatives, such as staggered water areas, inundation areas, or initializing the waterway dry, should be considered.

See also

Water Module
Benchmarks button.png
Introduction button.png
Water Module
Benchmarks button.png
Getting started button.png
Tutorials
Benchmarks button.png
Overview button.png
Overview
Benchmarks button.png
Theory button.png
Theory
Benchmarks button.png
Benchmarks button.png
Benchmarks
Group
Water area
Water level • Water relative
Sewer area
Sewer storage • Sewer pump speed
Inundation area
Inundation level
Aquifer
Aquifer kd • Aquifer datum
Breach
Breach height • Breach width • Breach angle • Breach coefficient • Breach speed • Breach input area • Breach level area • External surface level • External water level • External area
Rain area
Rain m
Limitation area
Limit area
Output
Object flow output • Object height output • Object datum output a • Object datum output b • Object width output
Related
Building attributes • Hydraulic structures •  Terrain attributes • Model attributes • Results • Simulation data
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