river help needed

[LynnB]

A waterfall river is sometihng i am doing and the problem of where the water is going to came along .......after chatting to Josh and Tom two ideas were suggested a pipe or a tunnel ...... i went with the Tunnel the water dissapearing to an underground cave structure as here ........

Thats a very good idea, I realized that a river coming out of or going into a stone culvert is the right move and can be done just about anywhere. If need be you can angle the stone culvert more if you have to.