Hello I am building a pond and need advise. I have run into a major problem its a long storey I originally wanted to dig down 3 feet and have a block pond a small one 3 feet deep 80cm wide 170cm long but decided it was too small for plants and was a bit small for 4 koi fish. So I expanded it a bit but then decided why not make it a bit bigger so its know about 170cm wide see photo. I will try to make a video of how my build is going. The main problem I have had is ground water. I have had no end of problems with ground water. Even digging deeper and putting down hardcore. after ripping up a concrete base. I have ripped out a lot of cement and decided to rebuild it bigger. The main problem I have is the factory building behind me is using my garden as a soak away . The soil and clay soil is wet and when we had the bad weather such as rain the pond flooded with water. What do you suggest I do should I give up having a pond in the ground or consider building it above ground ? The factory guttering is dumping water off their huge roof into my garden. I don t know what to do can any one help? I am loosing all will with this as its cost me so much in skips.