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Yard & Area Drains · September 28, 2026

Before El Niño Arrives: Yard Drain Cleaning in Upland

Dry weather hides drainage problems, and this winter may not be dry. NOAA's Climate Prediction Center gives a very strong El Niño better than 90 percent odds for this fall and winter, and the seasonal outlooks favor above-normal rain across Southern California, including the Inland Empire. Forecasts are not guarantees. But a yard drain that has been quietly filling with silt and roots for three or four seasons is the kind of thing a wet winter finds fast.

Your yard drains are the grates in the lawn, planters and side yards, usually tied into the downspouts. They feed a buried line that empties through a small opening in the curb. That is the whole system, and it only works if the line is open all the way to the street.

Root mass being forced out of a curb drain outlet by a hydro jetter hose
A root mass forced out of the curb outlet by the jetter. It had closed the line completely about 36 feet in, so every yard drain upstream had nowhere to send its water.

Newer or older, the same thing happens

Upland covers everything from foothill streets on the slopes north of Foothill Boulevard to older, tree-lined neighborhoods closer to downtown. The foothill lots move a lot of water downhill in a hurry. The older neighborhoods have decades of root growth around shallow drain lines. And every fall, the Santa Ana winds fill grates with leaves right before the rainy season starts. Each of those ends in the same place: water with nowhere to go.

What a fully blocked line looks like

We recently cleared a yard drain line that had stopped working entirely. The homeowner's upstream drains would not take water at all. The camera showed why: a root mass had completely closed the line about 36 feet in from the curb outlet. Every drain behind it was backing up.

Tangle of roots on a sidewalk beside a curb outlet, with a drain inspection camera on the curb
Roots already pulled from the curb outlet, with the inspection camera staged to run the line. The camera counts cable footage, so we can tell you exactly how far in a problem sits.

When the jetter broke through, the roots came out of the curb first. Then everything that had been trapped behind them followed.

Muddy backed-up water rushing out of a curb outlet after a yard drain blockage is cleared
The moment the blockage breaks: water that had been trapped in the line behind the roots rushes out of the curb outlet.

Why we jet rather than snake

A snake bores a small hole through a clog. It gets water moving, but the roots stay attached to the pipe wall and grow back, and the silt stays on the bottom. A hydro jetter uses high-pressure, rear-facing nozzles that clean the whole inside of the pipe and flush the debris out the curb. Then we run the camera through again to confirm the line is clear from the yard to the street. If anything still looks suspect, we tell you exactly where, by cable footage from the outlet.

Hydro jetter hose flushing a yard drain line out through a curb outlet
The jetter's rear-facing nozzles scour the full pipe wall and drive silt and root fragments out to the gutter.

Signs your yard drains are already struggling

Seeing any of those? Call 714-992-6363 and we will get you on the schedule.

What happens after the work

You get a drain line that is open to the street, verified with a camera, and an honest explanation of what we found along the way. FlowPro is new, but the inspector behind it is not: Rob Kruger has been inspecting Southern California homes since 2020.

Clear them before the rain, not during it

Once storms start, everyone calls at once. Get your Upland yard drains cleared now, while it is dry and scheduling is easy.

Call 714-992-6363