How to modify evaporation factor from trees to forests

Default values for the evaporation factor of trees are set to a value consistent with the placement of individual trees. This means that if an individual tree is loaded in as a singular polygon, their evaporation factor is set properly. However, when an entire forest is loaded in, the entire forest is loaded in as a singular polygon. Where a polygon representing an individual tree may have about 1m² of polygon per tree, a forest may have closer to 30m² or 40m² per tree. This means the evaporation factor would also be multiplied with a greater surface area, and the resulting evaporation would be a similar factor too great. To correct this, you can take the following steps.

Editor → Current Situation (Ribbon tab) → Buildings (Ribbon bar) → The Building to edit (Left panel)

How to change the evaporation factor for forests:

1. Determine the forest (or larger group of trees) for which the evaporation factor should be changed.
2. Determine the ratio of surface area to amount of trees, for example by dividing the area of the forest by the amount of trees in the forest.
3. Select the building which represents the forest in the editor.
4. Go to the "Details" tab.
5. Find the "Water evaporation" function value.
6. Divide the "Water evaporation" value by the rato determined earlier, to get a new, lower evaporation factor
7. Enter that new factor as the "Water evaporation" function value for this forest