What is the best shape for a pond?
You can shape your pond in any configuration your imagination and budget can handle. As long as you are building a flexible liner pond. Preformed ponds are limited to shape of preformed liner that you purchased, and once they crack thats it. When laying out your pond, try to use existing landscape and features to help shape the pond. Unless you are looking for a formal pond, stay away from straight or perfectly circular lines. Try using sweeping curves instead of tight, angular ones. You want the current from the stream and waterfalls to be able to travel through the pond to your skimmer.