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Step 1
Make sure the fish pond is located in the proper place, because it will become a permanent part of your landscape. For example, you never want to locate it under a tree, especially one that sheds its leaves, because you will have to keep it clean for the fish that live there almost year-round. Also, it should be located on flat ground so that the water level is even. If your back yard is hilly, you may have to abandon the idea of having a fish pond unless you are prepared to regrade your back yard.
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Step 2
Choose a size for your fish pond that fits your back yard, not one that overwhelms it. Your fish pond can be virtually any shape you choose, as long as its depth remains constant.
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Step 3
Site your fish pond out in the open where it will receive maximum light if you plan to decorate it with plants. Also, the growth in the pond itself needs plenty of sunlight.
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Step 4
Do research into what kinds of plant life best sustain the fish you have chosen, because that will influence how deep you should dig your fish pond. Also, consider digging a pond deep enough that it will not freeze in the winter.
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Step 5
Figure a way to dispose of the dirt you will dig up for your pond. For instance, a pond that is 20 feet square and 2 feet deep will result in about 800 cubic feet of dirt. It can be used to elevate parts of your back yard, or you can arrange to have it hauled away.
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Step 6
Consider using a pump and filtering system to circulate the water; this will allow for more fish and keep your plants healthier. It will also create sound that will make your fish pond more appealing and keep the pond cleaner.
