We used to have a 1/3 acre pond several feet deep, the result of 18th Century clay extraction. The previous owners in their wisdom though, decided to fill it with rubbish & hardcore and cap it off with hundreds of tons of scalpings, so its now our parking area and probable shed site- its a wide flat firm area but not much good for growing trees on. The willows and Hazel on it all eventually fall over due to shallow roots. (photo below). I did the road by hand last winter.
Would love a nice pond, but am told that if they don't have good light and are overhung by trees they just turn into a stagnant pool. Our friends have a good stream which was damned to provide water for a large country house, so they also have a small lake. Theres a large old ornamental cherry on one side- when in blossom and reflected in the water it looks like an impressionist painting, very beautiful.
Not too far from Devon, in South Somerset just off the A303 corridor, so if passing drop a PM and will be pleased to show you round our little patch.