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Yard Drainage & Erosion Control in Houston, TX

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Houston yard drainage problems come from flat ground, slow-draining clay and intense storms. Common fixes include extending downspouts, regrading away from the slab, swales, surface drains and French drains with a real outlet. Call Texas811 before digging, and check city, county and HOA rules before changing lot drainage or working near a bayou or ditch.

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Drainage is the most common yard complaint in the Houston area, and the reasons are built into the landscape. The ground is nearly flat, much of it is heavy clay that absorbs water slowly, and storms can drop several inches of rain in a short time. According to the Harris County Flood Control District, a major flood happens somewhere in Harris County about every two years. Even outside mapped flood zones, many yards hold water for days after a big rain.

Signs you have a drainage problem

  • Water standing in the lawn or beds more than a day or two after rain
  • Water pooling against the slab or running toward the house
  • Grass dying in the same low spots every year, or mosquitoes breeding in puddles
  • Mulch and soil washing onto walkways or into the street
  • Side yards that stay muddy between homes

Why Houston yards stay wet

On a flat lot there is very little slope to carry water away, so small changes matter. A few inches of settling next to the slab, a raised flower bed that blocks the path to the street, or downspouts that empty at the foundation can all trap water. Clay makes it worse because water moves through it slowly. In newer subdivisions, lots are often graded to drain toward the street or a rear swale, and later projects such as patios, pools and fences can interrupt that path.

Common fixes

  • Downspout extensions and buried lines. Moving roof water away from the house, often to a pop-up emitter or the street, where local rules allow.
  • Regrading. Reshaping soil so it slopes away from the foundation and toward a safe outlet.
  • Swales. Shallow, grassed channels that guide surface water around the house.
  • Surface drains and catch basins. Grates in low spots connected to solid pipe that carries water to an outlet.
  • French drains. Gravel trenches with perforated pipe for areas where soil stays saturated. In clay they need careful design and a real outlet.
  • Raised beds and soil improvement. Lifting plants above wet soil and adding organic matter to beds.

Our guide to fixing a soggy yard on Houston clay walks through each option in more detail.

Erosion along bayous, ditches and slopes

Most Houston lots are flat, but homes that back up to bayous, creeks, detention ponds or roadside ditches can lose soil along the bank. Fixes range from establishing dense vegetation to rock or engineered stabilization. Work in or next to a flood control channel or easement may need approval from the Harris County Flood Control District or your city. Ask before you build anything on a bank.

Rules to know

  • Call Texas811 first. Texas requires a locate request before digging, including in your own yard. Private lines such as sprinklers are not marked.
  • Do not push water onto a neighbor. Redirecting concentrated water onto another lot can lead to disputes and liability.
  • Check floodplain and drainage rules. Fill in a floodplain, connections to storm sewers, and work in drainage easements can require permits. Rules vary by city and county.
  • Check your HOA. Many neighborhoods regulate changes to lot drainage.

What affects the cost

Drainage costs depend on the length of pipe or trench, how far water must travel to an outlet, whether concrete or patios must be cut, the amount of soil moved, and repairs to lawn, beds and sprinklers afterward. A site visit, ideally during or right after rain, is the only way to get an accurate quote.

Water standing in your yard right now? Request a Houston-area drainage company and mark your request as urgent.

See how it works

How a French drain carries water away from a yard. Press the buttons to run each step and see what happens inside. Made with Colorfigures ·
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Frequently asked questions

How long should water stand in my Houston yard after a storm?

Some ponding after a very heavy rain is normal on clay. Water that stays more than a day or two, or that collects against the slab, usually points to a grading or outlet problem.

Can I connect my yard drain to the street or storm sewer?

Some cities allow drains to outlet at the curb, and some require permits or prohibit direct connections. Rules vary, so check with your city or county before a contractor ties into public drainage.

Can I add fill dirt to raise my yard?

Small amounts to correct grading are common, but adding fill can push water onto neighbors, and fill in a mapped floodplain may require a permit. Check with your floodplain administrator first.

Sources and further reading

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