Try to have the liner and water level in the pond higher than the high water
level. The weight of the water will hold the liner down. If the water
level on the outside of the pond is higher than the inside, then the liner
will lift, spilling the pond water into that rather large pond, and the fish
will probably decide that the water quality is better on the outside as
well.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html
"Deb" wrote in message
...
I live in NW Ohio, only 100 yds from the south shore of Lake Erie. We
put in a tiny pond a few months ago and are planning on putting a
larger pond in this fall. Since we're in the flood plane I plan on
building the sides of the pond up with 2 courses of concrete block and
then bank dirt around the sides for a more natural look. The top of
the pond will be above the highest flood level (so far), but I'm
concerned about ground water. When the lake level rises, so does the
water table. I plan on using EDPM liner. Will the liner bubble up
when the water table rises? Suggestions?