This is with stock 4.13m, viewed from the Full Mission Builder.
On this one, you can see the highest mountain is still visible, ie above waterlevel, so not flooded.
(Yes, look closely, just above the blue arrow)
Whereas, on this one, the waterlevels are much higher, as now the highest mountain is not visible, so it must be completely flooded!
Both recorded from a distance of just over 36 km from the mountain.
Now that's the difference between WaterLevel=2 and WaterLevel=3
Never knew it worked this way...
Hm, should maybe test this on a desert map as well, I bet all that sand will soke up much more water than all those rocks on the Slovaniaka map... so should maybe try WaterLevel=4.
Then again, the mountains on the desert map are not thát high ...
Anyone?