Pond problems

Me and my family have recently been having one recurring problem with the pond. The water keeps draining from it and the only explanation is someone is very thirsty! Just kidding, it has a hole in it but we didn't know where it was. But now we do know. In fact we only found out about half an hour ago. There is a small split in the pond lining where the water can easily escape. We knew it was small because otherwise the water would've drained faster than it has been. With a little bit of work and a lot of tape, it should be fixed!