Why drainage problems are common in Houston
Houston gets frequent heavy rain. Much of the area is very flat, and many neighborhoods sit on clay soils that absorb water slowly. When a heavy storm hits a flat lot with slow-draining soil, water has nowhere to go quickly. It sits in low spots, runs toward the house or stays in the lawn for days.
Lot-level details make it worse: yards that settle over time, flower beds and patios that block the natural slope, fences built across drainage paths, and downspouts that empty right next to the foundation. Most of these can be diagnosed and corrected.
Common Houston drainage problems
Possible solutions
The right solution depends on where the water comes from and where it can go. These are the solutions Houston drainage professionals use most:
Downspout drainage
Extending or burying downspouts so roof water is carried away from the foundation to a safe outlet.
Regrading
Reshaping the soil so the yard slopes away from the house and toward a drainage path.
French drains
A perforated pipe in gravel that collects water from saturated soil and carries it away.
Catch basins and yard drains
Surface drains in low spots, piped to the street, a swale or another legal outlet.
Channel (trench) drains
Linear drains across driveways, patios and garage entrances.
Swales and dry creek beds
Shallow, shaped channels that guide surface water around the house.
What affects the cost of drainage work
Drainage.net is preparing Houston cost guides from published sources. Until those are ready, these are the main factors that change the price of a drainage project:
- How much water there is and where it comes from (roof, neighbor, street or groundwater)
- How far the water must be carried to a legal outlet, and whether that outlet exists
- Length and depth of pipe or trenching needed
- Access, existing landscaping, concrete or fences that must be removed and restored
- Whether regrading, sod or hardscape restoration is included
- Permits, HOA approval and utility locates
Property drainage vs. regional flooding
Property drainage problems happen when rainwater cannot leave your lot fast enough. Regional flooding, when bayous, creeks or streets overflow, is a different problem that lot-level drainage cannot fix. To check whether a property is in a mapped flood zone, look it up on the FEMA Flood Map Service Center or with the Harris County Flood Control District.
Houston-area drainage pages
Drainage.net is starting with Houston and the surrounding cities. Choose your city to see local drainage help.
Frequently asked questions
Why does my Houston yard stay wet for days after it rains?
Usually because the soil drains slowly and the water has no path off the property. Clay soil, a low spot, a blocked drain or downspouts emptying into the area can each keep a yard wet. The diagnostic can help narrow it down.
Is standing water near my foundation a problem?
Water that regularly collects against the foundation should be corrected. Clay soils shrink and swell as their moisture changes, and steady water at the slab edge can contribute to foundation movement and moisture problems. Grading and downspout drainage are the usual first steps.
Can I pipe yard drainage to the street?
Sometimes, but rules vary by city, county, drainage district and HOA. Some places allow curb outlets and some don't. A drainage professional should confirm what is allowed before installing a drain to the street.
Who performs the drainage work?
Drainage.net helps you understand the problem and connects you with qualified independent drainage professionals who serve your area. The professional confirms the scope and price with you directly.