Groundwater level formula (Water Overlay): Difference between revisions
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Where: | Where: | ||
* WL<sub>underground</sub> = The groundwater level, relative to [[Datum|datum]]. | * WL<sub>underground</sub> = The groundwater level, relative to [[Datum|datum]]. Also known as the watertable. | ||
* WH<sub>underground</sub> = The height (column) of the saturated zone. | * WH<sub>underground</sub> = The height (column) of the saturated zone. | ||
* W<sub>sat</sub> = The amount of water in the saturated zone. The height of the water column if the equivalent amount of water was placed on the surface. | * W<sub>sat</sub> = The amount of water in the saturated zone. The height of the water column if the equivalent amount of water was placed on the surface. | ||
* H<sub>surface</sub> = The terrain height in the cell, relative to datum. | * H<sub>surface</sub> = The [[terrain height (Water Overlay)|surface height]] in the cell, relative to datum. | ||
* GBDM = The [[Ground bottom distance m model attribute (Water Overlay)|GROUND_BOTTOM_DISTANCE_M]] (effectively available height in the underground model). | * GBDM = The [[Ground bottom distance m model attribute (Water Overlay)|GROUND_BOTTOM_DISTANCE_M]] (effectively available height in the underground model). | ||
* WSP = The [[Terrain water storage percentage (Water Overlay)|WATER_STORAGE_PERCENTAGE]] of the underground terrain type. | * WSP = The [[Terrain water storage percentage (Water Overlay)|WATER_STORAGE_PERCENTAGE]] of the underground terrain type. | ||
Revision as of 07:46, 14 June 2019
Groundwater level is calculated per cell.
- WHunderground = Wsat / WSP
- WLunderground = WHunderground + Hsurface - GBDM
Where:
- WLunderground = The groundwater level, relative to datum. Also known as the watertable.
- WHunderground = The height (column) of the saturated zone.
- Wsat = The amount of water in the saturated zone. The height of the water column if the equivalent amount of water was placed on the surface.
- Hsurface = The surface height in the cell, relative to datum.
- GBDM = The GROUND_BOTTOM_DISTANCE_M (effectively available height in the underground model).
- WSP = The WATER_STORAGE_PERCENTAGE of the underground terrain type.
