Groundwater level formula (Water Overlay): Difference between revisions

Revision as of 12:57, 2 September 2020

Groundwater level is calculated per cell.

h_{u}={\frac {\Delta w_{s}}{sp}}

gl_{u}=h_{u}+B-d_{b}

Where:

$h_{u}$ = The height (column) of the saturated zone.
$\Delta w_{s}$ = 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.
$sp$ = The WATER_STORAGE_PERCENTAGE of the underground terrain type, used here as a fraction.
$gl_{u}$ = The groundwater level, relative to datum. Also known as the watertable.

$B$ = The surface height in the cell, relative to datum.
$d_{b}$ = The GROUND_BOTTOM_DISTANCE_M (effectively available height in the underground model).

@@ Line 12: / Line 12: @@
 * <math>d_b</math> = The [[Ground bottom distance m model attribute (Water Overlay)|GROUND_BOTTOM_DISTANCE_M]] (effectively available height in the underground model).
+{{article end
+|related=
 ==Related==
 The following topics are related to this formula.
@@ Line 26: / Line 28: @@
 : [[Evaporation model (Water Overlay)|Evaporation model]]
 : [[Infiltration model (Water Overlay)|Infiltration model]]
+}}
-==Related models==
 {{WaterOverlay formula nav}}