Groundwater level formula (Water Overlay) - Revision history

Maxim@tygron.com at 13:41, 16 July 2025

2025-07-16T13:41:35Z

← Older revision		Revision as of 13:41, 16 July 2025
Line 19:		Line 19:
	; Formulas		; Formulas
	: [[Ground flow formula (Water Overlay)]]		: [[Ground flow formula (Water Overlay)]]
	: [[Ground ~~evaporation~~ formula (Water Overlay)]]		: [[Ground transpiration formula (Water Overlay)]]
	: [[Surface infiltration formula (Water Overlay)]]		: [[Surface infiltration formula (Water Overlay)]]
	: [[Ground infiltration formula (Water Overlay)]]		: [[Ground infiltration formula (Water Overlay)]]
Line 26:		Line 26:
	: [[Surface model (Water Overlay)]]		: [[Surface model (Water Overlay)]]
	: [[Ground model (Water Overlay)]]		: [[Ground model (Water Overlay)]]
	: [[~~Evaporation~~ model (Water Overlay)]]		: [[Evapotranspiration model (Water Overlay)]]
	: [[Infiltration model (Water Overlay)]]		: [[Infiltration model (Water Overlay)]]
	}}		}}

	{{WaterOverlay formula nav}}		{{WaterOverlay formula nav}}

Frank@tygron.nl at 15:18, 26 January 2024

2024-01-26T15:18:51Z

← Older revision		Revision as of 15:18, 26 January 2024
Line 6:		Line 6:
	: <math>h_s</math> = The height (column) of the saturated zone.		: <math>h_s</math> = The height (column) of the saturated zone.
	: <math>V_s</math> = 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.		: <math>V_s</math> = 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.
	: <math>f_{ws}</math> = The [[Terrain water storage percentage (Water Overlay)\|WATER_STORAGE_PERCENTAGE]] of the ~~underground~~ terrain type, used here as a fraction.		: <math>f_{ws}</math> = The [[Terrain water storage percentage (Water Overlay)\|WATER_STORAGE_PERCENTAGE]] of the ground terrain type, used here as a fraction.
	: <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the [[Ground watertable result type (Water Overlay)\|watertable]].		: <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the [[Ground watertable result type (Water Overlay)\|watertable]].
	: <math>B_c</math> = the datum height of the surface of cell c, set by the [[Elevation (Water Overlay)\|elevation]] or a [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]].		: <math>B_c</math> = the datum height of the surface of cell c, set by the [[Elevation (Water Overlay)\|elevation]] or a [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]].
Line 16:		Line 16:
	The following topics are related to this formula.		The following topics are related to this formula.
	; Features		; Features
	: [[Groundwater Prequel (Water Overlay)~~\|Groundwater~~]]		: [[Groundwater Prequel (Water Overlay)]]
	; Formulas		; Formulas
	: [[~~Underground~~ flow formula (Water Overlay)~~\|Underground flow formula~~]]		: [[Ground flow formula (Water Overlay)]]
	: [[~~Underground~~ evaporation formula (Water Overlay)~~\|Underground evaporation formula~~]]		: [[Ground evaporation formula (Water Overlay)]]
	: [[Surface infiltration formula (Water Overlay)~~\|Surface infiltration formula~~]]		: [[Surface infiltration formula (Water Overlay)]]
	: [[~~Underground~~ infiltration formula (Water Overlay)~~\|Underground infiltration formula~~]]		: [[Ground infiltration formula (Water Overlay)]]
	: [[~~Underground seepage~~ formula (Water Overlay)~~\|Underground seepage formula~~]]		: [[Ground bottom flow formula (Water Overlay)]]
	; Models		; Models
	: [[Surface model (Water Overlay)~~\|Surface model~~]]		: [[Surface model (Water Overlay)]]
	: [[~~Underground~~ model (Water Overlay)~~\|Underground model~~]]		: [[Ground model (Water Overlay)]]
	: [[Evaporation model (Water Overlay)~~\|Evaporation model~~]]		: [[Evaporation model (Water Overlay)]]
	: [[Infiltration model (Water Overlay)~~\|Infiltration model~~]]		: [[Infiltration model (Water Overlay)]]
	}}		}}

	{{WaterOverlay formula nav}}		{{WaterOverlay formula nav}}

Frank@tygron.nl at 13:10, 25 January 2024

2024-01-25T13:10:31Z

← Older revision		Revision as of 13:10, 25 January 2024
Line 1:		Line 1:
	Groundwater level is calculated per cell.		Groundwater level is calculated per cell.
	: <math>h_s = \frac{V_s}{~~f_s~~}</math>		: <math>h_s = \frac{V_s}{f_{ws}}</math>
	: <math>w_g = h_s + B_c - d_{b,c}</math>		: <math>w_g = h_s + B_c - d_{b,c}</math>

Line 6:		Line 6:
	: <math>h_s</math> = The height (column) of the saturated zone.		: <math>h_s</math> = The height (column) of the saturated zone.
	: <math>V_s</math> = 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.		: <math>V_s</math> = 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.
	: <math>~~f_s~~</math> = The [[Terrain water storage percentage (Water Overlay)\|WATER_STORAGE_PERCENTAGE]] of the underground terrain type, used here as a fraction.		: <math>f_{ws}</math> = The [[Terrain water storage percentage (Water Overlay)\|WATER_STORAGE_PERCENTAGE]] of the underground terrain type, used here as a fraction.
	: <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the [[Ground watertable result type (Water Overlay)\|watertable]].		: <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the [[Ground watertable result type (Water Overlay)\|watertable]].
	: <math>B_c</math> = the datum height of the surface of cell c, set by the [[Elevation (Water Overlay)\|elevation]] or a [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]].		: <math>B_c</math> = the datum height of the surface of cell c, set by the [[Elevation (Water Overlay)\|elevation]] or a [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]].

Frank@tygron.nl at 13:00, 25 January 2024

2024-01-25T13:00:03Z

← Older revision		Revision as of 13:00, 25 January 2024
Line 7:		Line 7:
	: <math>V_s</math> = 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.		: <math>V_s</math> = 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.
	: <math>f_s</math> = The [[Terrain water storage percentage (Water Overlay)\|WATER_STORAGE_PERCENTAGE]] of the underground terrain type, used here as a fraction.		: <math>f_s</math> = The [[Terrain water storage percentage (Water Overlay)\|WATER_STORAGE_PERCENTAGE]] of the underground terrain type, used here as a fraction.
	: <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the watertable.		: <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the [[Ground watertable result type (Water Overlay)\|watertable]].
	: <math>B_c</math> = the datum height of the surface of cell c, set by the [[Elevation (Water Overlay)\|elevation]] or a [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]].		: <math>B_c</math> = the datum height of the surface of cell c, set by the [[Elevation (Water Overlay)\|elevation]] or a [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]].
	: <math>d_{b,c}</math> = The ground bottom distance of the cell c, defined by a [[Bottom distance prequel (Water Overlay)\|Bottom distance prequel]] or a general [[Ground_bottom_distance_m_(Water_Overlay)\|GROUND_BOTTOM_DISTANCE_M]] of the Water Overlay.		: <math>d_{b,c}</math> = The ground bottom distance of the cell c, defined by a [[Bottom distance prequel (Water Overlay)\|Bottom distance prequel]] or a general [[Ground_bottom_distance_m_(Water_Overlay)\|GROUND_BOTTOM_DISTANCE_M]] of the Water Overlay.

Frank@tygron.nl at 12:58, 25 January 2024

2024-01-25T12:58:56Z

← Older revision		Revision as of 12:58, 25 January 2024
Line 1:		Line 1:
	Groundwater level is calculated per cell.		Groundwater level is calculated per cell.
	: <math>h_s = \frac{V_s}{f_s}</math>		: <math>h_s = \frac{V_s}{f_s}</math>
	: <math>w_g = h_s + B_c - ~~d_b~~</math>		: <math>w_g = h_s + B_c - d_{b,c}</math>

	Where:		Where:
Line 9:		Line 9:
	: <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the watertable.		: <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the watertable.
	: <math>B_c</math> = the datum height of the surface of cell c, set by the [[Elevation (Water Overlay)\|elevation]] or a [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]].		: <math>B_c</math> = the datum height of the surface of cell c, set by the [[Elevation (Water Overlay)\|elevation]] or a [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]].
	: <math>~~d_b~~</math> = The [[~~Ground bottom~~ distance ~~m model attribute~~ (Water Overlay)\|GROUND_BOTTOM_DISTANCE_M]] ~~(effectively available height in~~ the ~~underground model)~~.		: <math>d_{b,c}</math> = The ground bottom distance of the cell c, defined by a [[Bottom distance prequel (Water Overlay)\|Bottom distance prequel]] or a general [[Ground_bottom_distance_m_(Water_Overlay)\|GROUND_BOTTOM_DISTANCE_M]] of the Water Overlay.


	{{article end		{{article end

Frank@tygron.nl at 12:58, 25 January 2024

2024-01-25T12:58:13Z

← Older revision		Revision as of 12:58, 25 January 2024
Line 1:		Line 1:
	Groundwater level is calculated per cell.		Groundwater level is calculated per cell.
	: <math>h_s = \frac{V_s}{f_s}</math>		: <math>h_s = \frac{V_s}{f_s}</math>
	: <math>w_g = h_s + B - d_b</math>		: <math>w_g = h_s + B_c - d_b</math>

	Where:		Where:
	* <math>h_s</math> = The height (column) of the saturated zone.		: <math>h_s</math> = The height (column) of the saturated zone.
	* <math>V_s</math> = 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.		: <math>V_s</math> = 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.
	* <math>f_s</math> = The [[Terrain water storage percentage (Water Overlay)\|WATER_STORAGE_PERCENTAGE]] of the underground terrain type, used here as a fraction.		: <math>f_s</math> = The [[Terrain water storage percentage (Water Overlay)\|WATER_STORAGE_PERCENTAGE]] of the underground terrain type, used here as a fraction.
	* <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the watertable.		: <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the watertable.
	* <math>B</math> = ~~The~~ [[~~terrain height~~ (Water Overlay)\|~~surface height~~]] ~~in the cell, relative to {{datum}}~~.		: <math>B_c</math> = the datum height of the surface of cell c, set by the [[Elevation (Water Overlay)\|elevation]] or a [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]].
	* <math>d_b</math> = The [[Ground bottom distance m model attribute (Water Overlay)\|GROUND_BOTTOM_DISTANCE_M]] (effectively available height in the underground model).		: <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		{{article end

Frank@tygron.nl at 10:50, 2 February 2023

2023-02-02T10:50:19Z

← Older revision		Revision as of 10:50, 2 February 2023
Line 1:		Line 1:
	Groundwater level is calculated per cell.		Groundwater level is calculated per cell.
	: <math>~~h_u~~ = \frac{~~\Delta w_s~~}{sp}</math>		: <math>h_s = \frac{V_s}{f_s}</math>
	: <math>~~gl_u~~ = ~~h_u~~ + B - d_b</math>		: <math>w_g = h_s + B - d_b</math>

	Where:		Where:
	* <math>~~h_u~~</math> = The height (column) of the saturated zone.		* <math>h_s</math> = The height (column) of the saturated zone.
	* <math>~~\Delta w_s~~</math> = 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.		* <math>V_s</math> = 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.
	* <math>sp</math> = The [[Terrain water storage percentage (Water Overlay)\|WATER_STORAGE_PERCENTAGE]] of the underground terrain type, used here as a fraction.		* <math>f_s</math> = The [[Terrain water storage percentage (Water Overlay)\|WATER_STORAGE_PERCENTAGE]] of the underground terrain type, used here as a fraction.
	* <math>~~gl_u~~</math> = The groundwater level, relative to {{datum}}. Also known as the watertable.		* <math>w_g</math> = The groundwater level, relative to {{datum}}. Also known as the watertable.

	* <math>B</math> = The [[terrain height (Water Overlay)\|surface height]] in the cell, relative to {{datum}}.		* <math>B</math> = The [[terrain height (Water Overlay)\|surface height]] in the cell, relative to {{datum}}.
	* <math>d_b</math> = The [[Ground bottom distance m model attribute (Water Overlay)\|GROUND_BOTTOM_DISTANCE_M]] (effectively available height in the underground model).		* <math>d_b</math> = The [[Ground bottom distance m model attribute (Water Overlay)\|GROUND_BOTTOM_DISTANCE_M]] (effectively available height in the underground model).

Frank@tygron.nl at 09:26, 9 February 2022

2022-02-09T09:26:21Z

← Older revision		Revision as of 09:26, 9 February 2022
Line 16:		Line 16:
	The following topics are related to this formula.		The following topics are related to this formula.
	; Features		; Features
	: [[Groundwater ~~GeoTIFF~~ (Water Overlay)\|Groundwater]]		: [[Groundwater Prequel (Water Overlay)\|Groundwater]]
	; Formulas		; Formulas
	: [[Underground flow formula (Water Overlay)\|Underground flow formula]]		: [[Underground flow formula (Water Overlay)\|Underground flow formula]]

Frank@tygron.nl at 12:31, 17 January 2022

2022-01-17T12:31:38Z

← Older revision		Revision as of 12:31, 17 January 2022
Line 16:		Line 16:
	The following topics are related to this formula.		The following topics are related to this formula.
	; Features		; Features
	: [[Groundwater ~~GeoTiff~~ (Water Overlay)\|Groundwater]]		: [[Groundwater GeoTIFF (Water Overlay)\|Groundwater]]
	; Formulas		; Formulas
	: [[Underground flow formula (Water Overlay)\|Underground flow formula]]		: [[Underground flow formula (Water Overlay)\|Underground flow formula]]

Rudolf@tygron.nl at 13:22, 2 September 2020

2020-09-02T13:22:29Z

← Older revision		Revision as of 13:22, 2 September 2020
Line 22:		Line 22:
	: [[Surface infiltration formula (Water Overlay)\|Surface infiltration formula]]		: [[Surface infiltration formula (Water Overlay)\|Surface infiltration formula]]
	: [[Underground infiltration formula (Water Overlay)\|Underground infiltration formula]]		: [[Underground infiltration formula (Water Overlay)\|Underground infiltration formula]]
			: [[Underground seepage formula (Water Overlay)\|Underground seepage formula]]
	; Models		; Models
	: [[Surface model (Water Overlay)\|Surface model]]		: [[Surface model (Water Overlay)\|Surface model]]

← Older revision		Revision as of 13:22, 2 September 2020
Line 22:		Line 22:
	: [[Surface infiltration formula (Water Overlay)\|Surface infiltration formula]]		: [[Surface infiltration formula (Water Overlay)\|Surface infiltration formula]]
	: [[Underground infiltration formula (Water Overlay)\|Underground infiltration formula]]		: [[Underground infiltration formula (Water Overlay)\|Underground infiltration formula]]
			: [[Underground seepage formula (Water Overlay)\|Underground seepage formula]]
	; Models		; Models
	: [[Surface model (Water Overlay)\|Surface model]]		: [[Surface model (Water Overlay)\|Surface model]]