Waterfall and stream repair for leaks, weak flow and shifting rock
Waterfalls are the most common leak point on a pond and the most common reason a pump seems 'too weak.' Both are fixable without rebuilding.
What usually goes wrong
- Liner edge settled below water level behind the falls
- Splash-out onto surrounding soil or hardscape
- Weir box seal failed or biofilter overflowing
- Rock shifted or mortar cracked, diverting flow
- Pump undersized for the head height, or plumbing restricted
- Stream check dams eroded so the falls run dry between pools
Repairs we perform
Liner lifts and re-terminations, weir and biofalls resealing, rock resetting and foam sealing, pump and plumbing upsizing, stream regrading, and pondless basin rebuilds.
Signs you need waterfall repair help
- The waterfall loses water but the pond level holds with the falls off
- The ground behind or beside the falls is always wet
- Flow is weak even after cleaning the pump
- Rocks have shifted and water runs behind them
- A pondless feature runs dry before the timer shuts off
What drives the cost
Most waterfall repairs are a one-day job priced per scope: liner re-termination and rock resetting are at the low end; weir replacement, pump upsizing and basin rebuilds are higher. A pump-off leak test is included.
What this service covers
Waterfall repair sits under the wider heading of water feature repair. Clients tend to call it waterfall fix or waterfall leak repair; whatever the name, the work breaks down into a few distinct jobs:
Liner lift and re-termination
Settled liner edges raised and re-terminated above water level.
Weir and biofalls resealing
Failed weir and biofilter seals replaced so the falls stop leaking behind the rock.
Rock resetting and foam sealing
Shifted stones reset and seams sealed to put flow back over the face of the falls.
Pump and plumbing upsizing
Pumps and lines resized for the actual head height so the falls run full.
Stream regrading
Check dams and pools rebuilt so the stream stays wet-looking at low flow.
Pondless basin rebuilds
Undersized or collapsed reservoirs rebuilt with matrix blocks and a serviceable vault.
Terms you'll hear from our technicians on this work: weir, biofalls, splash-out, head height, check dam, wicking, liner edge, foam sealant, flow rate.
Where we offer it
Routed service through Orange County, Los Angeles, San Diego County, the Inland Empire and the Coachella Valley, with construction and commercial crews traveling to Arizona.
Waterfall Repair across Southern California and Arizona
Orange County home base, routed crews from Los Angeles to San Diego and the desert. One call, one crew, written findings.
Before and after: waterfall repair calls
Customer story
A liner leak found the right way, in Long Beach
“They came back about three different times to make sure the leak was in the liner, without just saying, oh, we need to pull the liner out. It could have been a leak in the pipe. It's so clear, and you can hear the waterfall. I would recommend you guys to anyone. Fantastic job.”
Homeowner, Long Beach, CA
A Long Beach homeowner came home to an empty pond. Koi Pros came back three times to confirm the leak was in the liner and not the plumbing before recommending a new liner, then rebuilt the pond with the waterfall he can hear from the house.
Watch: a waterfall and pond repair and reseal in Orange County
A leaking community stream and waterfall, start to finish: drain and vacuum, grind and patch the cracks, spray the sealer, refill, and the waterfall running again. About two minutes. This is the same crew that handles waterfall repair.
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Questions about waterfall repair
Why is my waterfall losing water but my pond isn't?
Waterfalls sit above the pond, so any low liner edge, splash or wicking plant along the stream loses water the pond never sees. A pump-off test confirms it in a day.