The top picture is the upper pond, it's quite small just big enough to start the waterfall process. You can see part of the old pool liner that was under the cement. The earth in this area is hard clay, the cement was only about 2 inchs thick , it's purpose was to cover the liner to allow one to walk in the pond and back then I guess I just liked mixing cement. With the winters we have here the cement cracked with the frost, that not being a problem for many years because of the liner. The liner I used at that time as previously stated was from a above ground pool and became quite brittle. Now I am using the .045 membrane. The black pipe comes up from the bottom pond to supply the water.
Tags: Minnesota Gardens Home Garden rocks ponds water falls