Split the water area into many small water areas with 4 waypoints.

The floating direction of the water depends on the order, the water area corner points have been created in (see red circles / arrow):



You can make each river segment as long as you want but the river width is limited, as the texture will be stretched:



The same rules apply to rivers consisting of more than 4 corner points, but it is way harder to create these rivers in one step because you have to think way ahead and you always need the same number of corner points on each side of the river:




The most important part is to create the river segments or the entire river in one run. You may never add more corner points to any river area later on, as the result will be horrifying.

Hope that explains everything.

Originally Posted by: i^love^mixery 

Yes I can be useful once in a while😉

Originally Posted by: i^love^mixery