Pond Boss Forums POND CONSTRUCTION Building a dam Ductile Pipe or Concrete Pipe for Spillway?

We used 24" and 30" double walled PVC pipe for culverts on a farm addition last year, and have had 8" double walled PVC drain pipes running 60' and 180' from our two ponds for 15 years. Installed correctly (pieces slid together all the way), it doesn't leak or come apart after being buried. That's the material I'd be using in your situation.

P.S. Hi, DD!