indeedy, the small pond we bought required a lot of digging. then I struck a major root, so could not dig more.HBS Guy wrote:One of those preformed jobs is a possibility. The butyl(?) rubber sheets are pretty bloody pricy from memory.
Any fixed shape pond will require a lot of digging, 300–500mm deeper and wider than the pond, fill with dolomite sand to give the required depth and some protection from movement by the clay.
Would love a nice big ($$$!!!) pond with a “waterfall” a “stream” with “rustic bridge” over it and a “lake” where water lilies can grow, all powered by a couple discreet solar panels. (Water lilies do NOT like water on the tops of their leaves or currents in the water.) Need native fish to eat mosquito larva.
Built up some surroundings with extra soil. It has no waterfall or bridge. Much too small for that.
Is under an existing tree, the shade is good for them.
Course, if you are getting a guy in with a machine to dig holes for trees, move the trees around, rip up some areas, carve in a path - he can dig up the pond zone too !!!!!!!