How to configure bottom boundary flow to vary over time (Water Overlay)

When working with the full groundwater model of the Water Overlay, underground seepage may present a significant factor in the underground water balance. However, especially over longer times, the effects of external seepage can vary. For these situations, it is possible to introduce a time-dependant variation to the seepage.

For seepage to be functional, the following should be prepared beforehand:

• The Bottom pressure and Bottom resistance overlays based on GeoTIFFs.
• A csv with a start-time time sequence for the seepage fluctuation.

Editor → Current Situation (Ribbon tab) → Overlays (Ribbon bar) → Water Overlay (Left panel) → Configuration Wizard (Right panel) → Seepage

How to configure variable seepage:

1. Open the Water Overlay Wizard, and proceed to the seepage step.
2. Opt to configure seepage.
3. For the pressure GeoTIFF, import your GeoTIFF Overlay with seepage pressure values.
4. Ensure the uploaded GeoTIFF is selected in the dropdown.
5. For the resistance GeoTIFF, import your GeoTIFF Overlay with seepage resistance values.
6. Ensure the uploaded GeoTIFF is selected in the dropdown.
7. Set the seepage factor to "dynamic", and opt to select a csv.
8. Import the prepared csv.
9. Close the import window.
10. Close the configuration wizard, and recalculate the Overlay.

See also

• How to import a time sequence with a CSV
• How to configure constant seepage (Water Overlay)
• Bottom pressure prequel (Water Overlay)
• Bottom resistance prequel (Water Overlay)