In an river or a lake we call that flooding. Ponds too. Ours
overflows in big rains. We built in a place for it to do that by
having a part of the cement edge that is 1 1/2" lower than the rest
(Used a 2 x 6 to make a form). That makes the overflow occur where we
want it. Only a few big storms in the last decade have gone over the
edge elsewwhere.

Jim