Either a pre-formed waterfall mould
You should consider first what type of pond you want, in this case pond with waterfall feature. Would it be a home for fish and plants, these are things that you should take into consideration as well. But please keep in mind the most common mistake made when constructing a pond is the size, do not make it too small, if you decide to add fish at a later date, it will only make you more work as your pond may not be big enough. Location You will enjoy your pond more if you install it close to your home, or window, this way you can watch all the wild life visiting all year round. The pond needs to be located away from any drain pipes, keeping it away from any run off of rain, as this may contain contaminates. Also do not build your pond too near to trees as you will always have to be removing dead leaves and debris. Try to position your pond where it will receive a maximum amount of direct sunlight, this will aid the growth of plant life. Determine the size and shape of your pond