Drainage (Water Overlay) - Revision history

Frank@tygron.nl: /* Active Drainage Positive Q */

2025-11-14T15:01:44Z

Active Drainage Positive Q

← Older revision		Revision as of 15:01, 14 November 2025
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	\|notes=		\|notes=
	* A drainage should have a part that overlaps with land and a part that overlaps with water. These should be two separate polygons. Neither polygon should overlap with the edge of the waterway.		* A drainage should have a part that overlaps with land and a part that overlaps with water. These should be two separate polygons. Neither polygon should overlap with the edge of the waterway.
	* The water storage fraction is changed to the calculated average water storage for the grid cells where the ~~underground {{Inlet}}~~ is located.		* The water storage fraction is changed to the calculated average water storage for the grid cells where the drainage is located.
	\|seealso=		\|seealso=
	* [[Drainage formula (Water Overlay)]]		* [[Drainage formula (Water Overlay)]]

Frank@tygron.nl at 15:00, 14 November 2025

2025-11-14T15:00:42Z

← Older revision		Revision as of 15:00, 14 November 2025
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	}}		}}

	~~{{article end~~		==Drainage Types==
	~~\|notes~~=
	* A drainage should have a part that overlaps with land and a part that overlaps with water. These should be two separate polygons. Neither polygon should overlap with the edge of the waterway.

	There are three use cases that can be modeled using a drainage:		There are three use cases that can be modeled using a drainage:

	==Passive Drainage==		===Passive Drainage===
	A passive drainage lets water flow from the drainage pipes into the waterway when it has a lower level. In case of a higher water level in the waterway the water flow from the waterway into the drainage pipes.		A passive drainage lets water flow from the drainage pipes into the waterway when it has a lower level. In case of a higher water level in the waterway the water flow from the waterway into the drainage pipes.
	* Note: A passive drain must always has a positive [[Drainage q (Water Overlay)\|Drainage Q]] value.		* Note: A passive drain must always has a positive [[Drainage q (Water Overlay)\|Drainage Q]] value.
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	</gallery>		</gallery>

	==Active Drainage Negative Q==		===Active Drainage Negative Q===
	An active drainage with a negative [[Drainage q (Water Overlay)\|Drainage Q]] can pump water from from the waterway (with a lower level) up into the drainage pipes.		An active drainage with a negative [[Drainage q (Water Overlay)\|Drainage Q]] can pump water from from the waterway (with a lower level) up into the drainage pipes.

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	</gallery>		</gallery>

	==Active Drainage Positive Q==		===Active Drainage Positive Q===
	An active drainage with a positive [[Drainage q (Water Overlay)\|Drainage Q]] can pump water from the drainage pipes up into a waterway (with a higher level).		An active drainage with a positive [[Drainage q (Water Overlay)\|Drainage Q]] can pump water from the drainage pipes up into a waterway (with a higher level).

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	</gallery>		</gallery>

			{{article end
			\|notes=
			* A drainage should have a part that overlaps with land and a part that overlaps with water. These should be two separate polygons. Neither polygon should overlap with the edge of the waterway.
			* The water storage fraction is changed to the calculated average water storage for the grid cells where the underground {{Inlet}} is located.
	\|seealso=		\|seealso=
	* [[Drainage formula (Water Overlay)]]		* [[Drainage formula (Water Overlay)]]

Maxim@tygron.com at 14:13, 13 December 2024

2024-12-13T14:13:48Z

← Older revision		Revision as of 14:13, 13 December 2024
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	==Passive Drainage==		==Passive Drainage==
	A passive drainage lets water flow from the drainage pipes into the waterway when it has a lower level. In case of a higher water level in the waterway the water flow from the waterway into the drainage pipes.		A passive drainage lets water flow from the drainage pipes into the waterway when it has a lower level. In case of a higher water level in the waterway the water flow from the waterway into the drainage pipes.
	A passive drain must always ~~have~~ a positive [[Drainage q (Water Overlay)\|Drainage Q]].		* Note: A passive drain must always has a positive [[Drainage q (Water Overlay)\|Drainage Q]] value.

	* Note: when the waterway level is higher then the [[Drainage datum (Water Overlay)]] flow into the pipes is blocked.

	<gallery widths=500px heights=300px>		<gallery widths=500px heights=300px>

Maxim@tygron.com at 14:13, 13 December 2024

2024-12-13T14:13:13Z

← Older revision		Revision as of 14:13, 13 December 2024
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	==Passive Drainage==		==Passive Drainage==
	A passive drainage lets water flow from the drainage pipes into the waterway. ~~I should therefor~~ always have a positive [[Drainage q (Water Overlay)\|Drainage Q]].		A passive drainage lets water flow from the drainage pipes into the waterway when it has a lower level. In case of a higher water level in the waterway the water flow from the waterway into the drainage pipes.
			A passive drain must always have a positive [[Drainage q (Water Overlay)\|Drainage Q]].

	* Note: when the waterway level is higher then the [[Drainage datum (Water Overlay)]] flow into the pipes is blocked.		* Note: when the waterway level is higher then the [[Drainage datum (Water Overlay)]] flow into the pipes is blocked.

Maxim@tygron.com at 14:12, 13 December 2024

2024-12-13T14:12:08Z

← Older revision		Revision as of 14:12, 13 December 2024
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	<gallery widths=500px heights=300px>		<gallery widths=500px heights=300px>
	File:passive_drainage_positive.jpg		File:passive_drainage_positive.jpg
			File:passive_drainage_negative.jpg
	</gallery>		</gallery>

Maxim@tygron.com at 12:45, 12 December 2024

2024-12-12T12:45:17Z

← Older revision		Revision as of 12:45, 12 December 2024
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	{{:drainage active (Water Overlay)}}		{{:drainage active (Water Overlay)}}
	{{:drainage overflow threshold (Water Overlay)}}		{{:drainage overflow threshold (Water Overlay)}}
	~~{{:drainage diameter (Water Overlay)}}~~
	}}		}}

Maxim@tygron.com at 11:49, 12 December 2024

2024-12-12T11:49:52Z

← Older revision		Revision as of 11:49, 12 December 2024
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	The pump will keep pumping until:		The pump will keep pumping until:
	* The level in the waterway drops to the [[Drainage overflow threshold (Water Overlay)\|Drainage overflow threshold]].		* The level in the waterway drops to the [[Drainage overflow threshold (Water Overlay)\|Drainage overflow threshold]].
	* The the groundwater reaches: [[Drainage datum (Water Overlay)\|Drainage datum]] ~~+ [[Drainage diameter (Water Overlay)\|Drainage diameter]] / 2~~.		* The the groundwater reaches: [[Drainage datum (Water Overlay)\|Drainage datum]].

	<gallery widths=500px heights=300px>		<gallery widths=500px heights=300px>
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	The pump will keep pumping until:		The pump will keep pumping until:
	* The level in waterway reaches the [[Drainage overflow threshold (Water Overlay)\|Drainage overflow threshold]].		* The level in waterway reaches the [[Drainage overflow threshold (Water Overlay)\|Drainage overflow threshold]].
	* The the groundwater drops to: [[Drainage datum (Water Overlay)\|Drainage datum]] ~~- [[Drainage diameter (Water Overlay)\|Drainage diameter]] / 2~~.		* The the groundwater drops to: [[Drainage datum (Water Overlay)\|Drainage datum]].

	<gallery widths=500px heights=300px>		<gallery widths=500px heights=300px>

Frank@tygron.nl at 17:13, 11 December 2024

2024-12-11T17:13:53Z

← Older revision		Revision as of 17:13, 11 December 2024
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	==Active Drainage Negative Q==		==Active Drainage Negative Q==
	A active drainage with a negative [[Drainage q (Water Overlay)\|Drainage Q]] can pump water from from the waterway (with a lower level) up into the drainage pipes.		An active drainage with a negative [[Drainage q (Water Overlay)\|Drainage Q]] can pump water from from the waterway (with a lower level) up into the drainage pipes.

	The pump will keep pumping until:		The pump will keep pumping until:
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	==Active Drainage Positive Q==		==Active Drainage Positive Q==
	A active drainage with a positive [[Drainage q (Water Overlay)\|Drainage Q]] can pump water from the drainage pipes up into a waterway (with a higher level).		An active drainage with a positive [[Drainage q (Water Overlay)\|Drainage Q]] can pump water from the drainage pipes up into a waterway (with a higher level).

	The pump will keep pumping until:		The pump will keep pumping until:

Maxim@tygron.com at 16:51, 11 December 2024

2024-12-11T16:51:33Z

← Older revision		Revision as of 16:51, 11 December 2024
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	==Passive Drainage==		==Passive Drainage==
	A passive drainage lets water flow from the drainage pipes into the waterway. I should therefor always have a positive [[Drainage q (Water Overlay)\|Drainage Q]]. Note: when the waterway level is higher then the [[Drainage datum (Water Overlay)]] flow into the pipes is blocked.		A passive drainage lets water flow from the drainage pipes into the waterway. I should therefor always have a positive [[Drainage q (Water Overlay)\|Drainage Q]].

			* Note: when the waterway level is higher then the [[Drainage datum (Water Overlay)]] flow into the pipes is blocked.

	<gallery widths=500px heights=300px>		<gallery widths=500px heights=300px>

Maxim@tygron.com at 16:42, 11 December 2024

2024-12-11T16:42:09Z

← Older revision		Revision as of 16:42, 11 December 2024
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	{{:drainage datum (Water Overlay)}}		{{:drainage datum (Water Overlay)}}
	{{:drainage active (Water Overlay)}}		{{:drainage active (Water Overlay)}}
			{{:drainage overflow threshold (Water Overlay)}}
	{{:drainage diameter (Water Overlay)}}		{{:drainage diameter (Water Overlay)}}
	~~{{:drainage overflow threshold (Water Overlay)}}~~
	}}		}}