Building the best and fixing the rest · Mon–Fri 8–4 · Sat 9–5 · Orange, CA · Serving Southern California & Arizona [email protected]
Koi Pros

Backyard and commercial waterfall builders: natural rock, streams and spillways

A waterfall is a plumbing project wearing rock. Flow rate, weir width, drop height and basin sizing decide whether it sounds like a mountain creek or a running bathtub.

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    Lit rock waterfall and tropical stream beside a wood deck
    Lit tropical stream beside the deck
    Lit boulder waterfall in a tropical garden with a striped-awning gazebo
    Boulder waterfall, lit, tropical garden

    Natural rock waterfalls and streams

    We set real stone over a properly sloped liner, with hidden weirs and splash control so water stays in the system. Streams are built with riffles and pools that oxygenate the pond they feed, and pump flow is matched to the width of the falls so the feature runs on as little energy as possible.

    Multi-tier estate stream and waterfall lit at night
    Estate stream, lit for evening

    Pool waterfalls and spillways

    Sheer descents, rock grottos and raised spa spillways tied into existing pool plumbing. We coordinate with your pool contractor or handle the plumbing tie-in ourselves.

    Commercial water walls and entry features

    Entry waterfalls for hotels, office parks and HOA monuments, with auto-fill, wind sensors and timers so the feature isn't wasting water on a windy afternoon.

    Signs you need waterfall help

    • The feature you want has to be heard from the patio, not just seen
    • An existing waterfall sounds like a bathtub filling and runs a huge pump to do it
    • You want a stream that stays wet-looking without running the pump 24/7
    • The site slopes and you'd rather use the grade than fight it

    What drives the cost

    Height, width and rock weight set the price. A 3–4 ft residential falls with a short stream is a mid-four-figure to low-five-figure build; commercial entry features and long streams scale with liner length, stone tonnage and pump size. Wind-exposed sites add splash control and auto-fill.

    What this service covers

    Waterfall & stream construction sits under the wider heading of water feature construction. Clients tend to call it waterfall installation or waterfall builder; whatever the name, the work breaks down into a few distinct jobs:

    Natural rock waterfalls

    Hand-set boulders and flagstone over sloped liner with hidden weirs and foam-sealed seams so water stays in the system.

    Stream and creek beds

    Graded runs with riffles, pools and check dams that oxygenate the pond they feed and look wet at low flow.

    Pool waterfalls and sheer descents

    Rock grottos, sheer descents and spillways tied into pool plumbing, coordinated with your pool contractor.

    Rock grottos

    Walk-behind and swim-under rock structures with concealed plumbing and lighting.

    Entry and monument waterfalls

    Community and commercial entry features with auto-fill, timers and wind sensors.

    Water walls

    Vertical sheet-flow and textured-panel features for courtyards, lobbies and restaurant entries.

    Terms you'll hear from our technicians on this work: weir, biofalls / waterfall box, spillway, splash zone, head height, flow rate (GPM), check dam, riffle, liner termination, boulder setting, waterfall foam.

    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 & Stream Construction 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.

    Customer story

    Victoria's raised koi pond in Garden Grove

    “My son found Wes with Koi Pros online, and Wes built this above-ground fish pond for me. It's come out very nice. Every day my husband will come out here and relax and sit by the pond and enjoy the sounds and beauty of the Japanese-style koi pond Wes built for us. We also use it to water our plants with the fish waste, and our plants are very beautiful because of that. We are very pleased with Wes and his team.”

    Victoria, homeowner for 30 years, Garden Grove, CA

    Victoria has lived in her Garden Grove home for 30 years. Her son found Koi Pros online, and Wes built a raised, Japanese-style koi pond with a waterfall for her backyard. Her husband sits by it every day, friends come over to see it, and the fish water feeds the garden.

    Check out Koi Pros projects

    Koi ponds, waterfalls and water features we've designed, built and maintain across Southern California, in one minute. The same crew handles waterfalls.

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    Questions about waterfalls

    How much water does a waterfall use?

    A recirculating waterfall only loses water to evaporation and splash. A well-built 4-foot-wide falls typically loses a few gallons a day in summer; auto-fill valves keep the level steady.

    Can a waterfall be added to my existing pond?

    Usually, yes. We check whether the existing pump and plumbing can support the added head height, and upgrade them where needed.

    Need waterfall help?

    We assess the whole system first, then quote a fixed scope. Call or send the form.

    Call Request assessment