Hello everyone, I'm new to this site and new to ponds. I have recently been looking into building a koi pond in my backyard and I don't have a clue where to start! I am currently debating on whether or not to build a underground pond just in an open area of the yard, or build an above ground pond. I want to see everyone's opinion about which may be easiest and the longest lasting. I also live in Eastern Virginia. The temp. rarely gets below thirty during the winter and I have plenty of space and sunlight in the yard. Just making sure these conditions would be okay to build.