Catch Basin Installation Houston, TX

A catch basin fits when water collects in one predictable place: a puddle at the bottom of a sloped lawn, a patio corner that holds water after every storm, the strip between the driveway and the house, or the spot where two side-yard swalesSwaleA shallow, gently sloped channel in the ground, often grassed, that guides surface water toward an outlet. In practice: Side-yard swales between houses are common on Houston lots and are easily blocked by fences, beds or fill. meet. If you can point to where the water ends up, a basin can usually catch it there.

Basins are less effective when the problem is saturated soil across a broad area, or water that never pools at the surface at all. Those cases call for a French drainFrench drainA gravel-filled trench with a perforated pipe that collects water from the soil and carries it away. In practice: In heavy clay, a French drain mainly works by intercepting water near the surface. It must slope to a real outlet to be effective. or regrading, sometimes combined with basins.

A catch basin works by giving surface water an easier route than soaking into clay. Water reaches the grate, falls into the box, and exits through an outlet pipe set a few inches above the basin floor. The space below the outlet acts as a sump, where sand, silt, and debris settle instead of washing into the line.

Because Houston clayExpansive clayClay soil that swells when wet and shrinks when dry. Much of the Houston area sits on it, and it affects foundations, paving and drainage design. In practice: Keeping soil moisture around a slab foundation steady, without ponding or bone-dry spells, is part of good drainage design here. barely absorbs water, the basin is not a soak pit. It only works if the outlet pipe has continuous fall to a real discharge pointOutfallThe final point where collected water leaves the system, such as a street curb, storm sewer or approved ditch. In practice: A drainage system is only as good as its outfall. If the outfall is too high or blocked, the water backs up.. We set the rim slightly below the surrounding grade so water flows in from every side, then shape the soil or sod around it to funnel flow toward the grate.

Placement is everything, so most of the care goes into the first two steps.

1. 1Find the true low point by watching water flow and measuring elevations, not by eye.
2. 2Plan the pipe route and confirm fall all the way to the outlet.
3. 3Call 811 for utility locates before any digging.
4. 4Excavate and set the basin on a compacted, level base so it will not settle or tilt.
5. 5Connect solid pipe to the basin outlet and run it with steady fall to the discharge point.
6. 6Set the grate just below finished gradeGrade and slopeGrade is the level of the ground surface, and finished grade is that level after work is complete. Slope, or fall, is the rate at which a surface drops over distance. Every hard surface needs some fall so water does not sit on it., then backfill and compact around the box in layers.
7. 7Shape the surrounding grade, restore sod, and flood test the basin.

We install NDS catch basins, which come in several sizes, from compact square boxes for patios and beds to larger basins for areas that collect a lot of runoff. Basins can be stacked with risers when the pipe has to run deeper, and multiple side outlets let one basin take in branch lines from other drains.

Grate choice depends on location. Flat grates sit flush in lawns and patios. Atrium or dome grates suit planting beds, where mulchMulchA layer of organic or mineral material spread over soil to hold moisture, moderate soil temperature and suppress weeds. In practice: In heavy rain, light mulch can float and wash onto paving. Placement and edging should account for water flow. and leaves would bury a flat grate. Green grates disappear into St. Augustine, and black or gray ones match hardscape. In driveways, the grate and basin must be rated for vehicle traffic. Connecting pipe is solid SDR-35 or solid PVC.

The number of basins, their size, and the length of pipe to the outlet are the main factors. Basins set into concrete or pavers cost more than basins in a lawn because of cutting and patching. Traffic-rated grates, deeper installs, and pump basins on lots with no fall add to the total.

Most yards need more than one basin tied together on a shared line. Our ballpark price tool gives a starting point, and the itemized proposal lists each basin and pipe run so you can see where the cost comes from.

The most common mistake is a grate set too high, often because the basin settled into loose backfill or was set to the old grade before new sod went down. Water flows around it and pools beside it. We also find basins draining into a dead-end gravel pit, basins connected with corrugated pipe that sags under the yard, and single basins asked to handle an entire roof and patio.

Another issue is placement under trees with no plan for leaves. Live oaks drop leaves in spring and pines shed needles year round, and a flat grate under either will clog. The right grate plus a simple cleaning routine prevents that.

Catch basins are often one part of a larger surface water drainage system that includes channel drainsChannel drainA long, narrow grated drain set into paving to catch sheet flow along an edge, such as at a garage door or patio edge. along hard surfaces. Downspouts can tie into the same line through a rainwater drainage system. Where water pools because the yard is shaped wrong, lawn grading and leveling sends it toward the basin. For an overview of the whole category, see our drainage service in Houston.

Our team includes NDS Certified drainage specialists who install the basins, pipe, and outlets themselves. A Home Scout walks your property before writing a proposal, and the same crew finishes the sod, concrete, or pavers around each basin, so the grate ends up at the right height. You get an itemized proposal under our price-what-we-quote guarantee, a Drainage Performance Guarantee, and a 72-hour post-completion walkthrough.