Water Module Changes: Difference between revisions

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This page describes the changes between the Water Module LTS 2024 -> LTS 2026. These changes will result in a faster en more realistic result, but can be reversed for full backwards compatibility.
This page describes the changes between the Water Module LTS 2024 → LTS 2026. These changes will result in a faster en more realistic result, but can be reversed for full backwards compatibility.


==Updates==
==Updates==
The Water Module 2026 has several changes, most changes only make it faster or contain additional functionality. The changes listed here can also change the outcome.
The Water Module 2026 has several changes, most changes only make it faster or contain additional functionality. The changes listed below could also influence the outcome (by making it more realistic).


* Polygon rasterization.
* '''[[Rasterization]]''': is now much faster and more accurate by using the 'center point'. The old 'outline' method could overshoot rasterize more cells that needed, this has been fixed by using center points. This can result in e.g. small differences in the way water flows between e.g. buildings.
* Drainage height (in relation to surface).
* Groundwater: Minimal saturation Unsaturated Zone.
* Groundwater: Infiltration active for waterways.


==Revert==
* '''[[Drainage (Water Overlay)|Drainage height]]''': is not always set to the datum height provided, cells that are above the surface are now ignored. This creates easier drainage usage because in the old method the drain could be lowered due to 1 cell with a to low surface level.
By adjusting these items you get the same result as in the LTS 2024:


* Rasterization: Switch to "outline" mode in the Calculation Popup.
* '''[[Infiltration_model_(Water_Overlay)|Waterway Infiltration (groundwater only)]]''': in 'complete' groundwater mode is active for waterway surface [[terrain]]s by default. This [[Ground_infiltration_md_(Water_Overlay)|GROUND_INFILTRATION_MD]] attribute used to default to zero (0) thus prevented proper interaction between the groundwater and the waterway in 'complete' groundwater mode. Note: in 'infiltration only' mode the waterway infiltration is still disabled by default preventing the waterway from leaking.
* Drainage height: Set Water Overlay attributte [[Min_drain_surface_distance_m_(Water_Overlay)|MIN_DRAIN_SURFACE_DISTANCE_M]] to a large negative value, e.g. -1000.
 
* Groundwater: Minimal saturation: Set attribute [[Min_unsaturated_fraction_(Terrain_Attribute)|MIN_UNSATURATED_FRACTION]] to zero (0) for all underground terrains in your project. Or by using the [[Min_unsaturated_fraction_prequel_(Water_Overlay)||MIN_UNSATURATED_FRACTION]] prequel with a combo with only zero (0) values.
==Revert to LTS 2024==
* Groundwater: Infiltration waterways: Set attribute [[Ground_infiltration_md_(Water_Overlay)|GROUND_INFILTRATION_MD]] to zero (0) for waterway surface terrains.
By adjusting these items you get the identical results as in the LTS 2024:
 
* '''[[Rasterization]]''': Switch to the old 'outline' mode in the [[Calculation panel]].
 
* '''[[Drainage (Water Overlay)|Drainage height]]''': Set Water Overlay attributte [[Min_drain_surface_distance_m_(Water_Overlay)|MIN_DRAIN_SURFACE_DISTANCE_M]] to a large negative value, e.g. -1000. This will cause the drain to be lowered again when a cell's drainage datum height is above the surface.
 
* '''[[Infiltration_model_(Water_Overlay)|Waterway Infiltration (groundwater only)]]''': set attribute [[Ground_infiltration_md_(Water_Overlay)|GROUND_INFILTRATION_MD]] to zero (0) again for waterway surface [[terrain]]s.

Latest revision as of 14:31, 6 March 2026

This page describes the changes between the Water Module LTS 2024 → LTS 2026. These changes will result in a faster en more realistic result, but can be reversed for full backwards compatibility.

Updates

The Water Module 2026 has several changes, most changes only make it faster or contain additional functionality. The changes listed below could also influence the outcome (by making it more realistic).

  • Rasterization: is now much faster and more accurate by using the 'center point'. The old 'outline' method could overshoot rasterize more cells that needed, this has been fixed by using center points. This can result in e.g. small differences in the way water flows between e.g. buildings.
  • Drainage height: is not always set to the datum height provided, cells that are above the surface are now ignored. This creates easier drainage usage because in the old method the drain could be lowered due to 1 cell with a to low surface level.
  • Waterway Infiltration (groundwater only): in 'complete' groundwater mode is active for waterway surface terrains by default. This GROUND_INFILTRATION_MD attribute used to default to zero (0) thus prevented proper interaction between the groundwater and the waterway in 'complete' groundwater mode. Note: in 'infiltration only' mode the waterway infiltration is still disabled by default preventing the waterway from leaking.

Revert to LTS 2024

By adjusting these items you get the identical results as in the LTS 2024:

  • Drainage height: Set Water Overlay attributte MIN_DRAIN_SURFACE_DISTANCE_M to a large negative value, e.g. -1000. This will cause the drain to be lowered again when a cell's drainage datum height is above the surface.
Retrieved from "https://support.tygron.com/w/index.php?title=Water_Module_Changes&oldid=65087"