Pond Boss Forums POND CONSTRUCTION Building a dam Overflow Pipe or Not

Is the spillway the only overflow for the pond if the pipe isn't installed? Is the spillway concrete or dirt?

If it's the only overflow, the pond should have a regular spillway or pipe for water to exit during normal rain events, and an "emergency" spillway. If water is constantly trickling out the dirt spillway, it'll slowly eat a channel in it.

Regarding pipe going thru the dam. Could you put a liner or geotextile fabric where the pipe ends, and then put rip-rap on top of the liner/fabric to prevent erosion? Or, 45� the pipe and add more so it dumps on the ground at the very base of the dam.