Increased resolution (Water Overlay)

Icon	Attribute	Unit	Range	Description	Default value
[[File: Dem_resolution.png defaultvalue=False|75x75px]]	INCREASED_RESOLUTION	boolean		Load the DEM at twice the resolution.	n/a

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

• How to add and remove an Attribute

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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

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Building attributes • Hydrological features • Hydraulic structures •  Terrain attributes • Results • Simulation data