> I dug my first pond this year. Twice we have had bad rains and the
> liner has floated up and dumped my water out. I assume it is from the water
> running either under the liner or just the water in the ground.
> Either way it is not good for the fish or my plants. I have been lucky
> enough both times to save most of my fish. How can I stop this? Are there any
> other similar experience's. Is this common?
You have several 'choices'.
Move the pond to higher ground.
Fill it with a layer of cobblestones or a light layer of rounded "pea
gravel" or "river rock", both the "pea gravel" and "river rock" are
available from any mega-hardwarestore.
This option has it's own (minor) hassles. In addition to the expense
and placement of the stones, you will have to be more careful about
debris settling in between the stones and creating anerobic (without
oxygen) bacteria. If too much muck is allowed to settle, and is later
stirred up, it can use up all the oxygen available to the fish.
Some people swear by a layer of gravel, both for the looks and being
able to 'plant' things in it. Other people just swear at it. It's your
The problem you're having is called hydrostatic pressure. It's the same
reason people in New Orleans are buried in above ground crypts. (Casket
buried underground tend to float due to the high watertable.)
Not sure about the french drains, that may work as well. (If I had to
move the pond to install the drains, I would just go ahead and move it
to higher ground.)
BTW. all of this info is from reading other posts on the net. Except
the gravel part. I helped someone put a small pond together and she
insisted on gravel for the whole bottom. It looks good, and isn't
stirred up very much. Don't buy anything pretty that's too expensive. It
will be 90% covered by algea in a matter of weeks.
Hope this helps
USDA zone 8, Sunset zone 31, northeastern N.C.
It all needs doing... and I'm kinda focused in a scattered sort of way.