I am almost ready to post the scene. There are a lot of parameters that have to be adjusted whenever you move the water surface, change the scatter color, or move the camera. I wrote a Python script to fully automate all this. It will synchronize values across:

Atmosphere shader
SunLight shader
IBL shader
Environment Sphere
Water Plane

Pretty cool. Will post soon.

Here is a render with the water surface 100 feet above the ground.

---

Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)