Building a pond for your garden is not as complicated as I first thought it might be. I made a beautiful little pond in my front yard just off the front walk and next to the porch. Here, I could sit back and enjoy the sights and sounds. And I did it in a weekend without ANY professional help! See how to build a pond, plus tips for easy maintenance.
How to Build a Pond in Your Backyard: DIY Pond Guide
Step One: Design Your DIY Backyard Pond
Route the area to the size you want in your pond. A pond can be as large as you like, but I chose to make mine about 4×8 feet. Check with your local code if you plan to place the pond in an unfenced area. Some cities limit the depth of the pond if it is not fenced, usually to 12 inches, so that there is no risk of drowning.
Decide if you just want a decorative pond or a full water garden with live plants and fish. I chose a decorative pond with a feature fountain as I wanted an easy DIY pond and was a bit concerned about the amount of maintenance required with a ‘living’ pond.
As long as you’re prepared that a water garden will require a deeper pond with more maintenance, it’s not a lot of extra work to learn how to build a pond with koi fish, live plants, or turtles.
Step Two: Dig Your DIY Backyard Pond
Once you’ve placed the pond shape with paint, chalk, or a spare tube on the outline, it’s time for the hard work! Dig! My original pond was 18 inches deep to allow for some goldfish that my kids wanted. Goldfish are tough as nails, but keeping up with the algae was tougher!
When I did some repairs the following spring, I removed the fish and filled my pond until it was only 12 inches deep. Whatever you choose, dig the pond to the desired depth and try to keep the sides as vertical as possible. This will make it easier to hide the lining later.
Place some material on the bottom of the pond to protect the liner from rocks, sticks and other objects that might poke holes. Good low budget ideas are newspaper, old carpet or even sand.
Step Three: Measure, Place, and Cut Your Pond Liner
Purchase a pond liner from your local supplier or discount store. Measure the depth of your pond x 2 and add to the length plus 2 feet – this is the length of your liner. The depth of your pond x 2 added to the width plus 2 feet – this is the width of your liner. The extra 2 feet allow the excess to be placed and trimmed.
Place the liner over the pond and place it on the bottom, fill it halfway with water and let it sit for several hours or overnight to allow the soil to settle. Cut the liner to hang just 3 inches above the edge of the pond. Those few inches are important. it’s better to cut too little than too much, as you can always come back later and cut again. If you are going to add a fountain pump, place it in the pond now.
Step Four: Cover the edges of the Pond Liner
Now you want to hide the edges of the pond liner with rocks. Flagstone in my part of the country is pretty expensive so I found a way to get the flagstone look for only $25. I took a case of slate floor tiles and used a hammer to break them into pieces.
I place the slate over the edge of the pond with the broken side facing the center of the pond. I then masked any smooth edges of the river rock tiles from my yard, simply laid over the slate. You can also use local rocks to hide any excess pond liner.
If you are adding one to your pond, attach your fountain pump and place it on a brick to achieve the correct height if necessary. Make sure you have a GFI outlet to plug into. If not, consider a solar pump.
Step Five: Add plants and other finishing touches
Add plants and accessories around the pond to make it a welcoming place for all your guests! Make sure there are seats nearby. A bird feeder in the nearby trees will ensure a steady supply of feathered friends to enjoy in your pond oasis!
You see, you can build a pond without breaking the bank or needing a professional to help! It really only takes a weekend, and it’s such a peaceful, beautiful addition to my yard. Highly recommended!
The first two photos in this tutorial were from ‘EHow’, this is my actual finished pond.
How to Make a DIY Pond in Your Backyard: Frequently Asked Questions
How Deep Should Your Backyard Pond Be?
For a small ornamental pond without fish, 12-18 inches is usually deep enough. If you want to add some fish, aim for a depth of at least 18 inches or deeper (about 3 feet) for koi. In colder climates, deeper ponds (3 to 4 feet) help prevent the water from freezing in the winter, giving fish a safe zone under the ice.
It’s also a good idea to include different depths in your pond, such as shallow shelves (6–12 inches) for marginal plants and deeper zones for fish. These layers create a more natural ecosystem and support a better water balance.
Can you just dig a hole and make a pond?
Technically yes, but it won’t last long without proper preparation! Water will leak and unstable walls may collapse over time. Most DIY backyard ponds need a flexible pond liner like we used or a preformed shell to hold the water.
Proper edging, filtering and circulation are also important. Without them, you can end up with muddy water, too much algae and structural problems.
Do I need a permit to dig a pond in my yard?
It depends on where you live and the size of the lake.
Small, decorative backyard ponds do not usually require permits. Larger ponds, ponds with electrical components (such as pumps and lighting), or ponds that change drainage patterns may require approval from your local municipality.
If you’re a member of an HOA, you should also check their rules before you get started. Always check with your city or county building department to confirm requirements, especially if you are using excavating equipment or making major landscape changes.
Should a pond be in sun or shade?
A balanced combination of sun and shade is perfect.
Most aquatic plants need about 4 to 6 hours of sunlight per day to thrive, but full sun can lead to excessive algae growth, especially if you’re in a warmer climate. Excessive shade can limit plant growth and reduce natural pond filtration.
If possible, place your pond where it receives morning sun and afternoon shade. Adding floating plants such as water lilies can also help naturally shade the water and reduce algae growth.
How can I keep my backyard pond clean?
It’s all about balance and maintenance, starting with proper filtration and circulation. A pump and biological filter help remove debris and support beneficial bacteria that break down waste. Adding aquatic plants also helps absorb excess nutrients that would otherwise feed the algae.
Regularly skim off leaves and debris, avoid overfeeding fish, perform a few water changes as needed, clean filters according to manufacturer’s instructions, and occasionally use beneficial bacteria treatments.
Grab a shovel and build your own backyard pond!
Ok, time to build a pond in your backyard, right? We think you’ll also want to check out our post on Perfect pond plants and Easy DIY Container Water Gardens!
