Ever considered a gunnite patch?
That is mixing in gunnite into soil in the area of the leak. Check with your contractor.

Thank you, I'll ask them about your suggestion. I've never heard of gunnite, I'll google that next.

Powdered Bentonite is often used to seal pond leaks and might be much more practical than gunnite. How it is used depends on the size and location of the leak. More info, please. Sandy

Hi Sandy,

Once I looked into what gunnite is, I knew I didn't want to use it. At this point, I don't know exactly where the leaks are coming from, except that they are coming from the North end of the pond. It is just a trickle of water, so the size of the leak can not be very large.

The ground in my area is made up of a small layer of topsoil, then clay, then shale.

I'm concerned that I'll have to empty the pond again, and I'll lose all my fish ... bass, blue gil, grass carp, goldfish, minnows, etc. Luckily the leak is on the shallow end of the pond ... so maybe just lowering the water level will do it.

We'll see.

I'm still waiting for the company to come look at it that does pond work.

Is this embankment the dam for the pond? Are there any pipes, gates or other waterflow structures? A leaking dam is serious business. Maybe you could describe the set-up more fully.

Mike

Mike,

If you look at the first picture above, behind that gazebo the ground slopes down. That is the "bank" that is leaking. All the other ground around the pond is even with the edge of the pond.

There are no pipes, gates or other waterflow structures there. The overflow for the pond is on the right hand side of the pond, and that area is very dry.

I read through lots of material on-line about bentonite, as mentioned above. And lots of the material talked about why ponds leak. One of the reasons was an extreme drought, which we had last summer.