Weir dam multiplier (Water Overlay)
| Icon | Attribute | Unit | Range | Description | Default value |
|---|---|---|---|---|---|
 |
WEIR_DAM_MULTIPLIER | factor | The width with which the weir's dam should be generated perpendicular to it's direction, relative to its flow width. | 4 |
When a weir's dam is generated, the width of the generated dam is based on the width of its WEIR_WIDTH attribute. However, the actual dam's width may be greater than the width of the aperture the water may actually flow through. The width of the generated dam is thus computed as the WEIR_WIDTH attribute, multiplied by the WEIR_DAM_MULTIPLIER. E.g. a weir with a width set to 5, for a Water Overlay with a weir dam multiplier set to 3, will have a generated dam with a width of 15.
Notes
- The minimum width for a generated dam is 10m. If the generated dam would be smaller than 10m, the generated dam is 10m wide.
- The generated dam may be smaller if a shoreline is reached before the calculated width is reached.
- The generated dam height is based on the maximum surface value found in the dam's area. For example a waterway shoreline has a surface height value of 0.5m then the the entire dam will be 0.5m. It can be inspected using the Surface elevation result type (Water Overlay) and additionally increased using the Weir dam surplus height m (Water Overlay) attribute.
- Warning: the generated dam must thus extend all the way to the shoreline, otherwise it may be to low and water will flow over it.
See also
- 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 • 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 • Duration min level m • Stabilizer angle • Start date ms • Surface water • Surface water evaporation factor • Timeframe times • Timeframes • Trim manning • Trim evapotranspiration • Trim root depth • Trim ground infiltration • Trim ground conductivity • Trim shoreline conductivity
- Related