does anyone know how to make a "sheer decent"?

a sheer decent is used for waterfalls that produce a sheet of water.

Re-design7 years ago
The edge needs to be very smooth, over hang so the water falls off the edge and doesn't "roll" off,  needs to be fed from a smooth reservoir to prevent turbulence  and needs to be as level as possible.  THe flow needs to be controlled too little and you'll just get a dribble too much and you'll get a flood.

Here's a good site to look at.
What an interesting link. Thanks for posting it !

Descent ?