Model attributes (Water Overlay): Difference between revisions

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The [[Water_Overlay|water overlay's]] model calculations depend on a number of calculation-wide parameters. These parameters are available as attributes of the water overlay and can be modified as such.
The [[Water Overlay]]'s model calculations depend on a number of calculation-wide parameters. These parameters are available as attributes of the water overlay and can be modified as such.


{| class="wikitable"
{{overlay attributes|suppresscategory=true|allowselflinks=true|
! Icon
{{:Allowed water increase m (Water Overlay)}}
! Attribute
{{:Avg shore width m (Water Overlay)}}
! Unit
{{:Avg terrain width m (Water Overlay)}}
! Description
{{:Avg terrain storage m (Water Overlay)}}
|-
{{:Breach measurement distance m (Water Overlay)}}
| [[File:waterwizard_icon_allowed_water_increase.png]]
{{:Bridge elevation (Water Overlay)}}
| {{anchor|ALLOWED_WATER_INCREASE_M|[[Allowed_water_increase_m_(Water_Overlay)|ALLOWED_WATER_INCREASE_M]]}}
{{:Culvert dem threshold m (Water Overlay)}}
| m
{{:Design flood elevation m (Water Overlay)}}
| The amount by which the water level on a water terrain must increase before it is considered stressed by water. This is used to compute the [[waterstress result type (Water Overlay)|WATER_STRESS]] result type.
{{:Extended reconstruction (Water Overlay)}}
|-
{{:Ground bottom distance m (Water Overlay)}}
|
{{:Ground bottom pressure m (Water Overlay)}}
| {{anchor|CULVERT_DEM_THRESHOLD_M|[[culvert dem threshold (Water Overlay)|CULVERT_DEM_THRESHOLD_M]]}}
{{:Ground water (Water Overlay)}}
| m
{{:Ground water depth m (Water Overlay)}}
| The maximum distance a culvert's [[culvert height (Water Overlay)|height]] can be below the [[terrain height (Water Overlay)|terrain]], for the terrain height to be adjusted to the height of the culvert.
{{:Ground watertable with surface (Water Overlay)}}
|-
{{:Hydraulic conductivity with thickness (Water Overlay)}}
|
{{:Impact flood threshold m (Water Overlay)}}
| {{anchor|DESIGN_FLOOD_ELEVATION_M|[[Design_flood_elevation_m_(Water_Overlay)|DESIGN_FLOOD_ELEVATION_M]]}}
{{:Impact range m (Water Overlay)}}
| m
{{:Increased resolution (Water Overlay)}}
| Constructions in the 3D world are assumed to have at most this height compared to the surface of the terrain. Greater values can create a more accurate model but will impact performance.
{{:Infiltration factor s (Water Overlay)}}
|-
{{:Limit area model attribute (Water Overlay)}}
|
{{:Limit rain (Water Overlay)}}
| {{anchor|GRAVITY|[[Gravity_(Water_Overlay)|GRAVITY]]}}
{{:Max infiltration m (Water Overlay)}}
| m/s²
{{:Max water bottom m (Water Overlay)}}
| Used constant for gravitational acceleration.
{{:Microrelief storage fraction (Water Overlay)}}
|-
{{:min max elevation (Water Overlay)}}
|
{{:Object entry correction (Water Overlay)}}
| {{anchor|GROUND_BOTTOM_DISTANCE_M|[[Ground_bottom_distance_m_(Water_Overlay)|GROUND_BOTTOM_DISTANCE_M]]}}
{{:Prequel surface level relative (Water Overlay)}}
| m
{{:Rise rate distance m (Water Overlay)}}
| Assumed distance under the terrain surface where the soil becomes impenetrable for water. The groundwater level cannot go below this depth, relative to the surface. The maximum amount of water that can be stored underground is equal to this attribute multiplied by the local terrain's [[Terrain water storage percentage (Water Overlay)|WATER_STORAGE_PERCENTAGE]].
{{:Sewer overflow threshold (Water Overlay)}}
|-
{{:Shoreline (Water Overlay)}}
|
{{:Show duration flood level m (Water Overlay)}}
| {{anchor|GROUND_WATER|[[Ground_water_(Water_Overlay)|GROUND_WATER]]}}
{{:Stabilizer angle (Water Overlay)}}
| {{boolean}}
{{:Start date ms (Water Overlay)}}
| Whether [[Underground model (Water Overlay)|water in the underground]] is simulated during the calculation. If this is deactivated, [[infiltration model (Water Overlay)|surface and underground infiltration]], and [[evaporation model (Water Overlay)|underground evaporation]] do not occur. Water flowing [[Sewer model (Water Overlay)|in- and out of the sewer]] are still simulated when sewers are present.
{{:Surface water (Water Overlay)}}
|-
{{:Surface water evaporation factor (Water Overlay)}}
| [[File:waterwizard_icon_allowed_water_increase.png]]
{{:Timeframe times (Water Overlay)}}
| {{anchor|IMPACT_FLOOD_THRESHOLD_M|[[Impact_flood_threshold_m_(Water_Overlay)|IMPACT_FLOOD_THRESHOLD_M]]}}
{{:Timeframes (Water Overlay)}}
| m
{{:Unsaturated fraction (Water Overlay)}}
| The amount of water a construction must experience before it is considered impacted by water. Water must reach this height either on one of the cells the construction is on, or on one of the cells adjacent to it. This is used to compute the [[impacted buildings result type (Water Overlay)|IMPACTED BUILDINGS]] result type.
{{:Weir dam multiplier (Water Overlay)}}
|-
{{:Weir move interval s (Water Overlay)}}
|
{{:Weir move step m (Water Overlay)}}
| {{anchor|INFILTRATION|[[Infiltration_(Water_Overlay)|INFILTRATION]]}}
{{:Weir move range m (Water Overlay)}}
| {{boolean}}
}}
| Whether surface water can infiltrate into the [[Underground_model_(Water_Overlay)#Two_Layered_model|unsaturated zone]] of the ground layer.
|-
|
| {{anchor|LIMIT_RAIN|[[Limit_rain_(Water_Overlay)|LIMIT_RAIN]]}}
| {{boolean}}
| Whether rainfall locations should be limited to water level areas, or rainfall will fall in the entire project area.
|-
|
| {{anchor|MAX_WATER_BOTTOM_M|[[max water bottom m (Water Overlay)|MAX_WATER_BOTTOM_M]]}}
| {{mdatum}}
| The maximum height for the bottoms of [[terrain water (Water Overlay)|water terrain]]s. Any [[terrain water (Water Overlay)|water terrain]] with a bottom at a higher {{datum}} height has its bottom lowered to this value.
|-
|
| {{anchor|MAX_WATER_DEPTH_M|[[Max_water_depth_(Water_Overlay)|MAX_WATER_DEPTH_M]]}}
| m
| The maximum depth of water on a cell that is able to move horizontally. This parameter can be set to influence the wave part in the [[surface flow formula (Water Overlay)|Saint-Venant equations]].
|-
|
| {{anchor|MINIMAL_CULVERT_DIAMETER_M|[[Minimal_culvert_diameter_m_(Water_Overlay)|MINIMAL_CULVERT_DIAMETER_M]]}}
| m
|
|-
|
| {{anchor|OBJECT_CORRECTION|[[Object_correction_(Water_Overlay)|OBJECT_CORRECTION]]}}
| {{boolean}}
|  Objects (culverts, pumps, weirs) sometimes overlap each other and then one object becomes inactive. When this happens the rasterizer automatically moves the object start/end point by a maximum of one cell so both object are connected.
|-
|
| {{anchor|SEWER_OVERFLOW_THRESHOLD|[[Sewer_overflow_threshold_(Water_Overlay)|SEWER_OVERFLOW_THRESHOLD]]}}
| fraction (m/m)
| How much of a [[sewer storage (Water Overlay)|sewer's storage]] must be filled with water before the [[Sewer overflow (Water Overlay)|sewer's overflows]] are allowed to overflow water.
|-
|
| {{anchor|SHORELINE|[[Shoreline_(Water_Overlay)|SHORELINE]]}}
| {{boolean}}
|  When a Waterway polygon is not correctly positioned in relation to the DEM this can result in filling up the nearby land with water at the start of the simulation. This will result in a lower water level then is expected from the water level area value. To correct this, a "shoreline" is added at neighbouring cells. At the start of the simulation, these shoreline cells will also be filled with water up to the nearby water level to prevent the initial flush. By default this option is turned on, but can be turned off by changing the attribute to 0.
|-
| [[File:waterwizard_icon_allowed_water_increase.png]]
| {{anchor|SHOW_DURATION_FLOOD_LEVEL_M|[[Show_duration_flood_level_m_(Water_Overlay)|SHOW_DURATION_FLOOD_LEVEL_M]]}}
| m
| The amount of water which must be present in a specific location before the duration of surface water can be recorded. This is used to compute the [[surface duration result type (Water Overlay)|SURFACE_DURATION]] result type.
|-
|
| {{anchor|SURFACE_WATER_EVAPORATION_FACTOR|[[Surface_water_evaporation_factor_(Water_Overlay)|SURFACE_WATER_EVAPORATION_FACTOR]]}}
| factor
| The factor by which the [[weather (Water Overlay)|weather]]'s evaporation factor is multiplied to compute the amount of [[surface evaporation formula (Water Overlay)|evaporation]] which takes place on the surface.
|-
|
| {{anchor|TIMEFRAMES|[[Timeframes_(Water_Overlay)|TIMEFRAMES]]}}
| integer
| The number of intermediate results recorded during the calculation. Each [[timeframe]] becomes a snapshot of data which can be viewed and analysed.
|}


{{WaterOverlay_model_attribute_nav}}
{{WaterOverlay model attribute nav}}
[[Category:Water Module]]
[[Category:Water Module]]

Latest revision as of 09:23, 24 January 2024

The Water Overlay's model calculations depend on a number of calculation-wide parameters. These parameters are available as attributes of the water overlay and can be modified as such.