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French Drain vs. Catch Basin

Two of the most common drainage fixes, and the ones people mix up most. The difference comes down to one thing: where the water is.

Both move unwanted water to a safe place. But they solve different problems, and using the wrong one — or only one when you need both — is why some drainage jobs never quite work.

The one-line rule

Catch basin = surface water at a spot. French drain = water in the soil across an area. If you can see water pooling on top of the ground in a defined low point, that's catch-basin territory. If the ground itself stays soggy and squishy over a stretch of yard, that's a French drain job.

What a catch basin does

A catch basin is a grated box set at a low point. Surface water runs across the ground, drops through the grate into the basin, and pipes away. It's perfect for a patio that sheets water to one corner, a driveway that ponds, or the bottom of a slope where runoff collects. It handles water that's already on the surface and moving.

What a French drain does

A French drain is a gravel-and-pipe trench that collects water from the soil. When ground is saturated — a lawn that stays wet for days, water wicking toward a foundation — the drain gives that subsurface water a path out. It handles water that's soaked into the ground, which a grate on the surface can't reach.

Why many yards need both: a hard Granite Bay storm produces surface runoff and saturates our slow-draining clay. A catch basin grabs the surface water at the low point while a French drain relieves the soggy soil nearby — together they keep a yard dry that neither could handle alone.

How we decide

We come look while we can see the problem — where water shows up, whether it's pooling on top or trapped in the soil, and where it can safely go. From there it's usually clear which tool (or combination) the property needs. Sometimes the real fix is neither, and it's actually regrading the ground so it sheds water on its own. The point is matching the solution to the actual water, not selling a one-size-fits-all "drainage system."

Still not sure what you're looking at? Start with why water pools in your yard, or just call and describe it — we'll point you the right way.

Not Sure Which You Need?

We'll look and tell you straight — free estimate across Granite Bay.

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