Pond Boss Forums POND CONSTRUCTION Building a dam Can I convert conventional into bottom draw

I have an old pond 50+ yrs. It has a conventional overflow system 12"-14" Dia. culvert. Is there a way to convert this system into a bottom draw. I was thinking I could run 12" HDPE down to the depth I wanted to draw from and either make a good seal at the junction of tin intake, or run 10" down inside the original and attach it to the intake tube. Is this a possibility or wishfull thinking? I will eventually have to put in a new system but wanted to do something on my own, soon.

Thanks, Fishhead