Limit rain (Water Overlay)

File:Attributes tab overlay.PNG

the attibutes tab of the water overlay and the limit area (limit rain) attribute.

There are a few modes available for the Water Module, dictating where calculations are to be performed:

• Entire map. Calculations are performed across the entire map. Water can flow anywhere.
• Limit to Water Level Areas Calculations are only performed in the locations where water level areas are present.
• Limit to specific Areas Calculations are only performed in the locations where limitation areas are present.

Possible values

• 0: Entire map
• 1: Limit to Water Level Areas
• 2: Limit to specific Areas

Notes

• Despite the attribute name's implication, this setting does not only affect the location of rainfall, but all calculations.
• When any limit is in effect, water can flow between valid locations, even if those locations are defined through different relevant features (e.g. 2 adjacent water level areas).
• In step 1 of the water overlay wizard, the to be calculated area can be selected. When chosen for the option Limit to specified areas, an extra step 2.6 in the wizard is added.

How-to's

• How to add a limitation area
• How to add and remove an Attribute

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Water Module

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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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