A backyard fountain starts with a level basin, a submerged pump, and a water tube feeding a decorative top piece.
Building a backyard fountain is a weekend project once you grasp the simple loop: water sits in a hidden reservoir, a pump pushes it up a tube, and the water spills back down into the reservoir. The key is getting the basin level and the pump fully submerged. Here’s the practical breakdown for a stone or pot-style fountain you build yourself.
What You Need Before You Dig
Most DIY fountains share the same anatomy. You need a watertight basin (a plastic bucket or tub works fine), a submersible pump, some tubing or rigid pipe, and a decorative top piece like a glazed pot or stone bowl. A low-voltage or plug-in pump rated for outdoor use is the safest bet.
You also need a flat, level surface near an electrical outlet. If your outlet is far from the spot, factor in a properly rated outdoor extension cord run through conduit — never let the cord sit exposed where it can be damaged.
Setting the Basin and Pump
Excavate the area so the basin or reservoir can sit fully level. Dig the pit slightly larger than your basin and about 2 inches deeper, then add a 2-inch gravel bed for drainage and stability. Gravel also keeps the basin from shifting when the ground settles or freezes.
Set the basin in the pit and check level in both directions — an off-level base causes uneven water flow and can make the fountain rock. Place the submersible pump inside the reservoir, and keep it fully submerged once you fill the fountain. Never run the pump dry; it will overheat and burn out quickly.
Route the power cord through a notch cut in the basin rim, or through a piece of PVC conduit running from the fountain to the outlet. This protects the cord from being pinched or cut by the stones you’ll place on top.
Water Flow, Sealing, and Finishing Touches
Attach the tubing or pipe to the pump outlet and feed it up to your fountain feature. For a taller build, a 1/2-inch copper pipe works well — one guide notes that a pipe 2 feet longer than the fountain height gives you plenty of working length. The pump kit you buy will include the right fittings for its outlet size.
Seal any drain holes or joints with silicone caulk or adhesive where your design requires it. Let the sealant fully cure before turning the fountain on — typically 24 hours.
Cover the reservoir with a heavy framed metal screen or platform so it can support the weight of your top feature. Then hide the whole structure with river rock, gravel, or landscaping stones.
Testing, Adjusting, and Power Considerations
Fill the reservoir until the pump is fully submerged, then plug it in. If your pump has a flow control valve, start low and adjust up until you get the spill you want without splashing water outside the basin. Watch the water level during the first hour — you may need to top it off.
| Build Component | What It Does | Key Detail |
|---|---|---|
| Reservoir basin | Holds the water supply | Set level in a gravel bed, fully hidden |
| Submersible pump | Moves water up the tube | Keep fully submerged; never run dry |
| Tubing or pipe | Carries water to the top | 2 ft longer than fountain height works |
| Top feature | Displays the water flow | Must rest on a sturdy support platform |
| Cord protection | Safely routes power | Use a rim notch or PVC conduit |
| Silicone sealant | Prevents leaks at joints | Cure fully before turning pump on |
For a heavy stone fountain, the base matters more than the waterworks. If you’re setting a tall stone piece, pour a small concrete pad rather than relying on soil, even compacted gravel — it prevents settling and tilting over time.
Solar-powered submersible pumps are a no-wire option when your outlet is too far to reach practically. The solar panel stakes into the ground a few feet from the fountain and should face south for the best sun exposure through the day. These work well for small, low-flow fountains but won’t push water as high as a plug-in pump.
Before you buy anything, check whether the pump kit includes the pump head, water tube, and screws specific to that model. One Outsunny assembly manual lists upper bowl, lower bowl, water tube, pump head, M3.5×16 screws, and M6×40 screws as the included parts. Follow the exact hardware that comes with your kit rather than improvising with mismatched fittings.
Ready to shop for a ready-made piece instead? Browse our tested backyard stone fountain picks for options that skip the DIY work entirely.
For more visual detail on the excavation and leveling process, This Old House’s garden fountain guide walks through the full install with photos of each stage.
FAQs
Do I need a concrete pad for a small pot fountain?
No, a small pot-style fountain works fine on a level gravel bed or patio stone. Concrete becomes necessary when you’re mounting a tall or heavy stone piece — one pedestal fountain manual specifies a pad capable of supporting 400 pounds to prevent settling.
How deep should the reservoir sit in the ground?
Dig the pit about 2 inches deeper than your basin and add a 2-inch gravel bed underneath. The basin rim should sit near ground level, with the gravel providing drainage so water doesn’t pool around the buried bucket and cause shifting.
What size pump do I need for a backyard fountain?
Match the pump to your fountain’s height, not its width. A pump rated for a 3-foot lift works for most tabletop and small ground fountains. Taller stone features need a higher-lift pump — check the gallons-per-hour spec at the height you’re actually pumping to.
References & Sources
- This Old House. “How to Install a Garden Fountain.” Details the excavation, basin, and tubing steps for a DIY fountain build.
- Lowe’s. “DIY Garden Fountain How-To.” Lists the ceramic pot, 5-gallon bucket, pump kit, and drill bit used in a sample build.
- Lowe’s. “Two-Tier Patio Water Fountain.” Assembly PDF covering upper and lower bowls, water tube, and included screws.
