Hidden or Disappearing Water, River, Creek

I'm hoping this may be helpful, Ron...

Note in the real-life photo, the stream does go around a bend, off to the right, in the distance, but the full view of it is obstructed by foliage and the curve.

In my modeling (inspired by the place, above, I visited), I built-in a curve that suggests the effluence comes from the right, "off-camera," as it were.

The entire stream is suggested to be under this landscape....

FrankM

Beautiful! I only wish I had those skills!

Oh my... That is impressive.  Thank you so much for sharing.  

Ron

Mirrors are your friend:

A waterfall to nowhere:

and, there are always culverts:

This is the opposite. The stream comes out of the layout into an imaginary river. The spring flows into a collecting basin and then out of the large culvert into the river below.

• Agree about mirrors.  I angled mine slightly so someone looking straight on won't see themselves.