Elevation (Water Overlay) - Revision history

Frank@tygron.nl: Redirected page to Elevation model (Water Overlay)

2026-05-05T11:34:57Z

Redirected page to Elevation model (Water Overlay)

← Older revision		Revision as of 11:34, 5 May 2026
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	The [[elevation model]] defines the height of the terrain on and in which the hydrology is modeled. Elevation includes the relief on the surface of dry land, but also the height of the stream beds of water bodies.		#REDIRECT [[Elevation model (Water Overlay)]]

	By default the [[elevation model]] will be derived from data sources relevant to the geographical location of the project area. However, especially in water bodies the level of detail of the elevation model may be insufficient. For these situations it's possible to load in a(n additional) [[GeoTIFF]] defining elevations, load in a [[GeoJSON]] file with water depths, or [[terrain height brush\|manually modify the elevation model]].

	~~In addition to the [[elevation model]], the height of [[building]]s is also taken into account. [[Breach (Water Overlay)\|Breach]]es are also embedded into the resulting~~ [[Elevation model (Water Overlay)~~\|Digital Surface Model~~]] ~~the [[Water Module]] uses for its calculations.~~

	During a session, a number of [[action]]s can directly affect the terrain height. [[Action]]s such as the creation of [[levee]]s, or the creation of open water, both affect the topography. Placing or removing [[building]]s also affects the terrain height, in terms of where water can flow.

	Alternatively, the elevation can be supplied by an other grid overlay, and configured using the [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]]. This can be useful in case you do not want to change the elevation model of your project. However, the prequel overlay must be calculated in advance and must be set to inactive in order for it to be used by the water overlay.

	~~{{article end~~
	~~\|notes=~~
	* '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]]. Calculated building heights ([[Design flood elevation m (Water Overlay)\|to some extend]]) are also included in this reconstruction.
	~~<gallery widths=400px heights=300px>~~
	~~File:piecewisereconstruction_1d.png\|1D linear piecewise reconstruction.{{ref\|Kurganov2}}~~
	~~File:Inundation overlay 04 HWP(2).PNG\|2D linear piecewise reconstruction.{{ref\|Horvath}}~~
	~~</gallery>~~
	~~\|howtos=~~
	* [[How to import a GeoTIFF to change the elevation model]]
	* [[How to use a Grid Overlay to change the elevation model]]
	* [[How to import a GeoTIFF of waterway depths]]
	* [[How to import a GeoJSON to change the elevation model]]
	~~\|seealso=~~
	* [[Terrain elevation prequel (Water Overlay)]]
	* [[Elevation model]]
	* [[Subsidence (Water Overlay)]]
	* [[Surface model (Water Overlay)]]
	* [[Elevation model (Water Overlay)]]
	* [[Breach (Water Overlay)]]
	* [[Levee]]
	~~\|references=~~
	~~<references>~~
	~~{{ref\|Kurganov2~~
	~~\|name=A Second-Order Well-Balanced Positivity Preserving Central-Upwind Scheme for the Saint-Venant System~~
	~~\|author=Kurganov A, Petrova G (2007)~~
	~~\|page=~~
	~~\|source=~~
	~~\|link=https://people.tamu.edu/~gpetrova//KPSV.pdf~~
	~~\|lastvisit=2016-03-25~~
	}}
	~~{{ref\|Horvath~~
	~~\|name=A two-dimensional numerical scheme of dry/wet fronts for the Saint-Venant system of shallow water equations~~
	~~\|author=Zsolt Horváth, Jürgen Waser, Rui A. P. Perdigão, Artem Konev and Günter Blöschl (2014)~~
	~~\|page=~~
	~~\|source=~~
	~~\|link=https://www.tuwien.at/index.php?eID=dumpFile&t=f&f=150915&token=e51c85712b7e70bcb769575d03f4680753d55f01~~
	~~\|lastvisit=2016-03-25~~
	}}
	~~</references>~~
	}}

	~~{{WaterOverlay simulation data nav}}~~

Rudolf@tygron.nl at 11:25, 25 February 2026

2026-02-25T11:25:01Z

← Older revision		Revision as of 11:25, 25 February 2026
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	\|page=		\|page=
	\|source=		\|source=
	\|link=~~http~~://~~www.math~~.tamu.edu/~gpetrova/KPSV.pdf		\|link=https://people.tamu.edu/~gpetrova//KPSV.pdf
	\|lastvisit=~~2018~~-06-29		\|lastvisit=2016-03-25
	}}		}}
	{{ref\|Horvath		{{ref\|Horvath
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	\|page=		\|page=
	\|source=		\|source=
	\|link=https://www.tuwien.at/index.php?eID=dumpFile&t=f&f=150915&token=e51c85712b7e70bcb769575d03f4680753d55f01~~, http://visdom.at/media/pdf/publications/Poster.pdf~~		\|link=https://www.tuwien.at/index.php?eID=dumpFile&t=f&f=150915&token=e51c85712b7e70bcb769575d03f4680753d55f01
	\|lastvisit=~~2018~~-06-29		\|lastvisit=2016-03-25
	}}		}}
	</references>		</references>

Rudolf@tygron.nl at 11:20, 25 February 2026

2026-02-25T11:20:19Z

← Older revision		Revision as of 11:20, 25 February 2026
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	\|page=		\|page=
	\|source=		\|source=
	\|link=~~http~~://~~citeseerx~~.~~ist~~.~~psu~~.~~edu/viewdoc/download~~?~~doi~~=~~10.1.1.700.7977~~&~~rep~~=~~rep1~~&~~type~~=~~pdf~~, http://visdom.at/media/pdf/publications/Poster.pdf		\|link=https://www.tuwien.at/index.php?eID=dumpFile&t=f&f=150915&token=e51c85712b7e70bcb769575d03f4680753d55f01, http://visdom.at/media/pdf/publications/Poster.pdf
	\|lastvisit=2018-06-29		\|lastvisit=2018-06-29
	}}		}}

Rudolf@tygron.nl at 14:08, 17 October 2025

2025-10-17T14:08:48Z

← Older revision		Revision as of 14:08, 17 October 2025
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	{{article end		{{article end
	\|notes= '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]]. Calculated building heights ([[Design flood elevation m (Water Overlay)\|to some extend]]) are also included in this reconstruction.		\|notes=
			* '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]]. Calculated building heights ([[Design flood elevation m (Water Overlay)\|to some extend]]) are also included in this reconstruction.
	<gallery widths=400px heights=300px>		<gallery widths=400px heights=300px>
	File:piecewisereconstruction_1d.png\|1D linear piecewise reconstruction. ~~Source: Kurganov and Petrova (2007)<~~ref ~~name="~~Kurganov2~~" />~~		File:piecewisereconstruction_1d.png\|1D linear piecewise reconstruction.{{ref\|Kurganov2}}
	File:Inundation overlay 04 HWP(2).PNG\|2D linear piecewise reconstruction. ~~Source: Horváth et al. (2014)<~~ref ~~name="~~Horvath~~"/>~~		File:Inundation overlay 04 HWP(2).PNG\|2D linear piecewise reconstruction.{{ref\|Horvath}}
	</gallery>		</gallery>
	\|howtos=		\|howtos=
Line 30:		Line 31:
	\|references=		\|references=
	<references>		<references>
	<ref name=~~"Kurganov2">Kurganov A, Petrova G (2007) ∙~~ A Second-Order Well-Balanced Positivity Preserving Central-Upwind Scheme for the Saint-Venant System ~~∙ found at:~~ http://www.math.tamu.edu/~gpetrova/KPSV.pdf ~~(last visited~~ 2018-06-29~~)</~~ref>		{{ref\|Kurganov2
	~~<ref~~ name=~~"Horvath">~~Zsolt Horváth, Jürgen Waser, Rui A. P. Perdigão, Artem Konev and Günter Blöschl (2014) ~~∙ A two-dimensional numerical scheme of dry/wet fronts for the Saint-Venant system of shallow water equations ∙ found at:~~ http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.700.7977&rep=rep1&type=pdf ∙ http://visdom.at/media/pdf/publications/Poster.pdf ~~∙ (last visited~~ 2018-06-29~~)</ref>~~		\|name=A Second-Order Well-Balanced Positivity Preserving Central-Upwind Scheme for the Saint-Venant System
			\|author=Kurganov A, Petrova G (2007)
			\|page=
			\|source=
			\|link=http://www.math.tamu.edu/~gpetrova/KPSV.pdf
			\|lastvisit=2018-06-29
			}}
			{{ref\|Horvath
			\|name=A two-dimensional numerical scheme of dry/wet fronts for the Saint-Venant system of shallow water equations
			\|author=Zsolt Horváth, Jürgen Waser, Rui A. P. Perdigão, Artem Konev and Günter Blöschl (2014)
			\|page=
			\|source=
			\|link=http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.700.7977&rep=rep1&type=pdf, http://visdom.at/media/pdf/publications/Poster.pdf
			\|lastvisit=2018-06-29
			}}
	</references>		</references>
	}}		}}

	{{WaterOverlay simulation data nav}}		{{WaterOverlay simulation data nav}}

Frank@tygron.nl at 16:50, 5 March 2024

2024-03-05T16:50:53Z

← Older revision		Revision as of 16:50, 5 March 2024
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	\|notes= '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]]. Calculated building heights ([[Design flood elevation m (Water Overlay)\|to some extend]]) are also included in this reconstruction.		\|notes= '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]]. Calculated building heights ([[Design flood elevation m (Water Overlay)\|to some extend]]) are also included in this reconstruction.
	<gallery widths=400px heights=300px>		<gallery widths=400px heights=300px>
	File:piecewisereconstruction_1d.png\|1D linear piecewise reconstruction.Source: Kurganov and Petrova (2007)<ref name="Kurganov2" />		File:piecewisereconstruction_1d.png\|1D linear piecewise reconstruction. Source: Kurganov and Petrova (2007)<ref name="Kurganov2" />
	File:Inundation overlay 04 HWP(2).PNG\|2D linear piecewise reconstruction. Source: Horváth et al. (2014)<ref name="Horvath"/>		File:Inundation overlay 04 HWP(2).PNG\|2D linear piecewise reconstruction. Source: Horváth et al. (2014)<ref name="Horvath"/>
	</gallery>		</gallery>

Frank@tygron.nl at 16:50, 5 March 2024

2024-03-05T16:50:34Z

← Older revision		Revision as of 16:50, 5 March 2024
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	{{article end		{{article end
	\|notes= '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]]. ~~Building~~ heights ([[Design flood elevation m (Water Overlay)\|to some extend]]) are also included in this reconstruction.		\|notes= '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]]. Calculated building heights ([[Design flood elevation m (Water Overlay)\|to some extend]]) are also included in this reconstruction.
	<gallery widths=400px heights=300px>		<gallery widths=400px heights=300px>
	File:piecewisereconstruction_1d.png\|1D linear piecewise reconstruction.Source: Kurganov and Petrova (2007)<ref name="Kurganov2" />		File:piecewisereconstruction_1d.png\|1D linear piecewise reconstruction.Source: Kurganov and Petrova (2007)<ref name="Kurganov2" />

Frank@tygron.nl at 16:50, 5 March 2024

2024-03-05T16:50:26Z

← Older revision		Revision as of 16:50, 5 March 2024
Line 10:		Line 10:

	{{article end		{{article end
	\|notes= '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]].		\|notes= '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]]. Building heights ([[Design flood elevation m (Water Overlay)\|to some extend]]) are also included in this reconstruction.
	<gallery widths=400px heights=300px>		<gallery widths=400px heights=300px>
	File:piecewisereconstruction_1d.png\|1D linear piecewise reconstruction.Source: Kurganov and Petrova (2007)<ref name="Kurganov2" />		File:piecewisereconstruction_1d.png\|1D linear piecewise reconstruction.Source: Kurganov and Petrova (2007)<ref name="Kurganov2" />

Frank@tygron.nl at 16:31, 5 March 2024

2024-03-05T16:31:40Z

← Older revision		Revision as of 16:31, 5 March 2024
Line 11:		Line 11:
	{{article end		{{article end
	\|notes= '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]].		\|notes= '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]].
			<gallery widths=400px heights=300px>
			File:piecewisereconstruction_1d.png\|1D linear piecewise reconstruction.Source: Kurganov and Petrova (2007)<ref name="Kurganov2" />
			File:Inundation overlay 04 HWP(2).PNG\|2D linear piecewise reconstruction. Source: Horváth et al. (2014)<ref name="Horvath"/>
			</gallery>
	\|howtos=		\|howtos=
	* [[How to import a GeoTIFF to change the elevation model]]		* [[How to import a GeoTIFF to change the elevation model]]
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	* [[Breach (Water Overlay)]]		* [[Breach (Water Overlay)]]
	* [[Levee]]		* [[Levee]]
			\|references=
			<references>
			<ref name="Kurganov2">Kurganov A, Petrova G (2007) ∙ A Second-Order Well-Balanced Positivity Preserving Central-Upwind Scheme for the Saint-Venant System ∙ found at: http://www.math.tamu.edu/~gpetrova/KPSV.pdf (last visited 2018-06-29)</ref>
			<ref name="Horvath">Zsolt Horváth, Jürgen Waser, Rui A. P. Perdigão, Artem Konev and Günter Blöschl (2014) ∙ A two-dimensional numerical scheme of dry/wet fronts for the Saint-Venant system of shallow water equations ∙ found at: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.700.7977&rep=rep1&type=pdf ∙ http://visdom.at/media/pdf/publications/Poster.pdf ∙ (last visited 2018-06-29)</ref>
			</references>
	}}		}}

	{{WaterOverlay simulation data nav}}		{{WaterOverlay simulation data nav}}

Frank@tygron.nl at 16:28, 5 March 2024

2024-03-05T16:28:02Z

← Older revision		Revision as of 16:28, 5 March 2024
Line 10:		Line 10:

	{{article end		{{article end
	\|notes: '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]].		\|notes= '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]].
	\|howtos=		\|howtos=
	* [[How to import a GeoTIFF to change the elevation model]]		* [[How to import a GeoTIFF to change the elevation model]]

Frank@tygron.nl at 16:27, 5 March 2024

2024-03-05T16:27:51Z

← Older revision		Revision as of 16:27, 5 March 2024
Line 10:		Line 10:

	{{article end		{{article end
			\|notes: '''Reconstruction''': No matter which option is configured for the elevation of a water overlay, it still will be reconstructed according to the [[Elevation model (Water Overlay)\|requirements of the algorithm]].
	\|howtos=		\|howtos=
	* [[How to import a GeoTIFF to change the elevation model]]		* [[How to import a GeoTIFF to change the elevation model]]