Increased resolution (Water Overlay): Difference between revisions

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{{Overlay attributes|type=row|overlay=Water  
{{Overlay attributes|type=row|overlay=Water  
|attribute=INCREASED_RESOLUTION
|attribute=INCREASED_RESOLUTION
|unit=boolean
|unit={{boolean}}
|description= To improve flow throughput in very small channels the [[Elevation_model_(Water_Overlay)|DEM]] can be loaded at twice the grid cell resolution. This will reduce grid flow artifacts at the cost of additional calculation time.
|description=Load the [[Elevation model (Water Overlay)|DEM]] at twice the resolution.
|icon=Dem_resolution.png
|icon=Dem_resolution.png
|defaultvalue=False
}}</onlyinclude>}}
}}</onlyinclude>}}


Loading the DEM at a higher resolution allows the skipping of an interpolation step, so the interpreted [[Elevation model (Water Overlay)|elevation model]] becomes more accurate. This improves flow throughput in very small channels and reduces grid flow artifacts, at the cost of additional calculation time.


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Latest revision as of 12:19, 27 October 2022

Icon Attribute Unit Range Description Default value
Dem resolution.png INCREASED_RESOLUTION boolean Load the DEM at twice the resolution. False

Loading the DEM at a higher resolution allows the skipping of an interpolation step, so the interpreted elevation model becomes more accurate. This improves flow throughput in very small channels and reduces grid flow artifacts, at the cost of additional calculation time.

Notes

  • This attribute only works for a grid cell size <= 0.5m.
  • This attribute is by default set to 0 which means increased DEM resolution is not used.
  • In the advanced settings step of the Water Overlay Wizard, this attribute can also be (de)activated.

How-to's

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
Model attributes
Allowed water increase m • Avg shore width m • Avg terrain width m • Avg terrain storage m • Breach measurement distance m • Bridge elevation • Culvert dem threshold m • Design flood elevation m • Extended reconstruction • Ground bottom distance m • Ground bottom pressure m • Ground water • Ground water depth m • Ground watertable with surface • Impact flood threshold m • Impact range m • Increased resolution • Infiltration factor s
Limit area • Limit rain • Max infiltration m • Max water bottom m • Microrelief storage fraction • Min max elevation • Object entry correction • Prequel surface level relative • Rise rate distance m • Sewer overflow threshold • Shoreline • Show duration flood level m • Stabilizer angle • Start date ms • Surface water • Surface water evaporation factor • Timeframe times • Timeframes • Unsaturated fraction • Weir dam multiplier • Weir move interval s • Weir move range m • Weir move step m
Related
Building attributes • Hydrological features • Hydraulic structures •  Terrain attributes • Results • Simulation data
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