Groundwater Prequel (Water Overlay): Difference between revisions

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Groundwater is only used when the [[ground water (Water Overlay)|GROUND WATER attribute]] of the [[Water Overlay]] is set to '''complete''', meaning the [[underground model (Water Overlay)|underground model]] is fully active.
Groundwater is only used when the [[ground water (Water Overlay)|GROUND WATER attribute]] of the [[Water Overlay]] is set to '''complete''', meaning the [[underground model (Water Overlay)|underground model]] is fully active.


Values in the groundwater GeoTIFF respersent the initial distance between the surface and the [[Ground_watertable_result_type_(Water_Overlay)|watertable]]. A greater value in the GeoTiff will result in a lower watertable. If there is no groundwater GeoTiff present, the water table is dictated by the [[water level (Water Overlay)|WATER_LEVEL]] attribute of the [[Water level area (Water Overlay)|water level area]] instead. If no water level area exists there either, the underground is assumed to be fully saturated, with the groundwater level equal to the surface height relative to {{datum}}.
Values in the groundwater GeoTIFF respersent the initial distance between the surface and the [[Ground_watertable_result_type_(Water_Overlay)|watertable]]. A greater value in the GeoTiff will result in a lower watertable. When a groundwater GeoTiff is not configured for the Water Overlay, the watertable is initialized using the [[water level (Water Overlay)|WATER_LEVEL]] attribute of the [[Water level area (Water Overlay)|water level area]] instead. For locations without water level areas, the water table is set to one meter below the surface height (relative to the {{datum}}).  


For the Netherlands, a number of groundwater GeoTiffs are offered by default, based on data provided by The Netherlands Hydrological Instrument:
For the Netherlands, a number of groundwater GeoTiffs are offered by default, based on data provided by The Netherlands Hydrological Instrument:

Revision as of 12:10, 10 July 2020

Groundwater in the Tygron Platform is modeled in the form of a GeoTiff.

Groundwater is only used when the GROUND WATER attribute of the Water Overlay is set to complete, meaning the underground model is fully active.

Values in the groundwater GeoTIFF respersent the initial distance between the surface and the watertable. A greater value in the GeoTiff will result in a lower watertable. When a groundwater GeoTiff is not configured for the Water Overlay, the watertable is initialized using the WATER_LEVEL attribute of the water level area instead. For locations without water level areas, the water table is set to one meter below the surface height (relative to the datum).

For the Netherlands, a number of groundwater GeoTiffs are offered by default, based on data provided by The Netherlands Hydrological Instrument:

  • NL_GHG_kk-nhi (Average highest watertable)
  • NL_GLG_kk-nhi (Average lowest watertable)
  • NL_GVG_kk-nhi (Average spring watertable)
Groundwater GeoTIFF specification
Description The height of the ground water level across the project area.
Value Groundwater level (m below terrain height)

How-to's

See also

Water Module
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Water Module
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Tutorials
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Overview
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Theory
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Benchmarks
Group
Weather
Rain m • Evaporation m
Prequels
Bottom distance • Bottom pressure • Bottom resistance • Ground conductivity • Groundwater datum • Groundwater depth • Manning • Max infiltration • Microrelief • Surface level • Surface u • Surface v • Terrain elevation • Unsaturated fraction
Elevation
Elevation
Related
Building attributes • Hydrological features • Hydraulic structures •  Terrain attributes • Model attributes • Results


Benchmarks button.png
Introduction button.png
Water Module
Benchmarks button.png
Getting started button.png
Tutorials
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Overview button.png
Overview
Benchmarks button.png
Theory button.png
Theory
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Benchmarks
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