I was wondering how many people consider having a overflow pipe for their
ponds??? Mine is 4 -inch pvc pipe and it goes underneath my waterfall where
you can't see it. Even with hard rains the excess water flows away from
the pond and it never overflows. I have known pond owners that don't have a
over-flow drain, so when their pond overflows it causes a problem because
the excess water flows over the edging then under the liner which causes the
liner to raise up. Just a note. Thanks Mike