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Step 1
Use a sturdy liner to keep your pond banks from eroding and to make cleaning it much easier. An overflow pipe allows excess water to be diverted away from the pond, and a drain of some sort allows you to flush the water out if necessary.
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Step 2
Keep your duck pond no more than 3 feet deep to make it easy to maintain. You can then use waders to move into the pond to clear out any visible debris.
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Step 3
Add a filtration system, or aerate the water through a small waterfall or another water feature. A small population of fish and certain plants, especially submerged plants, also helps keep the pond water fresh. However, ducks are likely to eat fish and plants.
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Step 4
Keep a water heater in your duck pond in the winter so the ducks have a place to swim all year round. Alternately, you can provide children's wading pools for the ducks in colder weather, which are easier to keep water heaters in.
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Step 5
Allow at least 10 square feet of water per duck. Less than this can make your pond become murky.
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Step 6
Flush the pond on a regular basis, replacing the old water with new, fresh water. You can do this with a garden hose. Or an inflow pipe, especially if diverted from a nearby stream, can also flush out the water.
