Groundwater level formula (Water Overlay)

Groundwater level is calculated per cell.

$h_{s}={\frac {V_{s}}{f_{ws}}}$

$w_{g}=h_{s}+B_{c}-d_{b,c}$

Where:

$h_{s}$ = The height (column) of the saturated zone.

$V_{s}$ = 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.

$f_{ws}$ = The WATER_STORAGE_PERCENTAGE of the ground terrain type, used here as a fraction.

$w_{g}$ = The groundwater level, relative to datum. Also known as the watertable.

$B_{c}$ = the datum height of the surface of cell c, set by the elevation or a Terrain elevation prequel.

$d_{b,c}$ = The ground bottom distance of the cell c, defined by a Bottom distance prequel or a general GROUND_BOTTOM_DISTANCE_M of the Water Overlay.

Related

The following topics are related to this formula.

Features

Groundwater Prequel (Water Overlay)

Formulas

Ground flow formula (Water Overlay)

Ground evaporation formula (Water Overlay)

Surface infiltration formula (Water Overlay)

Ground infiltration formula (Water Overlay)

Ground bottom flow formula (Water Overlay)

Models

Surface model (Water Overlay)

Ground model (Water Overlay)

Evaporation model (Water Overlay)

Infiltration model (Water Overlay)

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