Terrain ground infiltration md (Water Overlay): Difference between revisions
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Based on the properties of the terrain, water may infiltrate into the [[Underground model (Water Overlay)|underground water system]]. | Based on the properties of the terrain, water may infiltrate into the [[Underground model (Water Overlay)|underground water system]]. | ||
The speed at which water can infiltrate from the surface to the underground unsaturated zone is dependent on both the GROUND_INFILTRATION_MD of the surface terrain, as well as the [[ground infiltration md (Water Overlay)|GROUND_INFILTRATION_MD]] of any | The speed at which water can infiltrate from the surface to the underground unsaturated zone is dependent on both the GROUND_INFILTRATION_MD of the surface terrain, as well as the [[ground infiltration md (Water Overlay)|GROUND_INFILTRATION_MD]] of any [[building]] in that location, if present. Of the infiltration values of the building and the surface terrain, the lowest value is used. If either has an infiltration value of 0, water cannot infiltrate into the underground unsaturated zone. | ||
The maximum amount of water which can be stored in the saturated zone is based on the [[terrain water storage percentage (Water Overlay)|WATER_STORAGE_PERCENTAGE]] of the underground terrain. | The maximum amount of water which can be stored in the saturated zone is based on the [[terrain water storage percentage (Water Overlay)|WATER_STORAGE_PERCENTAGE]] of the underground terrain. | ||
Revision as of 16:07, 7 October 2022
| Icon | Attribute | Unit | Layer | Range | Description |
|---|---|---|---|---|---|
 |
GROUND_INFILTRATION_MD | m/day | Surface | The speed at which water can flow vertically from the surface to the underground unsaturated zone. | |
| |
GROUND_INFILTRATION_MD | m/day | Underground | The speed at which water can flow vertically from the surface to the underground unsaturated zone. |
Based on the properties of the terrain, water may infiltrate into the underground water system.
The speed at which water can infiltrate from the surface to the underground unsaturated zone is dependent on both the GROUND_INFILTRATION_MD of the surface terrain, as well as the GROUND_INFILTRATION_MD of any building in that location, if present. Of the infiltration values of the building and the surface terrain, the lowest value is used. If either has an infiltration value of 0, water cannot infiltrate into the underground unsaturated zone.
The maximum amount of water which can be stored in the saturated zone is based on the WATER_STORAGE_PERCENTAGE of the underground terrain.
Underground flow, or horizontal infiltration, are dependent on the infiltration properties of the underground, unless an aquifer exists at the same location.
Notes
- The groundwater level reduction is inversely proportional to the WATER_STORAGE_PERCENTAGE, as the contribution of a given volume of water to the groundwater level increases when the capacity for water storage in the underground layer decreases.
How-to's
See also
- Group
- Terrain attributes