How to add Subsidence (Water Overlay)
For the calculation of the effects of a severe rainfall, effects of subsidence can be included, such as the recalculated water levels and the changed ground levels. For now, ground water levels affected by the subsidence are not included.
How to include subsidence:
- Add the subsidence overlay. Take note of when to use and how to configure the subsidence overlay.
- In the right panel, select the "Keys" tab
- Select the "Area attribute: output level (m)". Choose a new attribute, for example the WATER_LEVEL_OUTPUT attribute, to write the new water levels to.
- In the Rainfall overlay in the right panel, select the "Keys" tab.
- Choose the overlay for the subsidence model you want to use in the "Include Subsidence" form.
- Also select the newly created attribute containing the water levels in the "Area Attribute: Water Level (m)" form.
- Go to the "General" tab and recalculate the grid.
Be careful not to write the new water levels calculated in the subsidence overlay to the already existing water level attribute, otherwise the subsidence model will be recalculated with incorrect values when refreshing this overlay.
You can play around with the results of the two overlays and compare, for example, two rainfall overlays where one overlay takes the effects of a subsidence model into account and the other overlay shows results without these effects.