A french drain is a trench filled with gravel and a perforated pipe that intercepts groundwater or surface runoff and redirects it away from problem areas. When properly designed for your soil type and installed with adequate slope and the right filter fabric, a french drain is one of the most effective long-term solutions for drainage problems.

Keller sits on the northern edge of Fort Worth in Tarrant County, a former agricultural community — it was a significant grain-shipping point along the old Cotton Belt Railroad — that transformed into one of the DFW Metroplex's more affluent suburbs largely from the 1980s onward. The overwhelming majority of Keller's housing stock is newer slab-built subdivisions reflecting that recent growth, built on the same expansive blackland-to-grayland prairie clay found throughout North Texas, though Tarrant County's soil composition runs slightly more variable than the deep uniform clay on the Dallas side of the Metroplex given its position closer to the Eagle Ford outcrop. Keller's higher household incomes and newer housing stock shift the local drainage market toward proactive correction and French drain installation ahead of visible problems, rather than the deferred, reactive repairs more common in older North Texas neighborhoods. Keller's Bear Creek corridor running through parts of the city is one of the few natural drainage channels still largely intact amid the surrounding subdivisions.

How French Drains Work

Water follows gravity. A french drain intercepts that flow by providing a path of least resistance — the gravel-filled trench allows water to enter from the surrounding soil, where it's collected by the perforated pipe and directed to a discharge point. The key variables are slope (minimum 1% grade for adequate flow), filter fabric selection (prevents soil migration into the gravel), and outlet placement (daylight outlet, dry well, or street). Getting these right is the difference between a drain that lasts decades and one that clogs in a few years.

Common Applications in Tarrant County

The contractors we connect you with install french drains along foundation perimeters to intercept water before it reaches the structure, across yards to interrupt subsurface water flow toward the home, and in low-lying areas where water consistently pools. In Tarrant County's clay soils, proper filter fabric selection is especially important — clay particles are small enough to migrate through coarser fabrics and eventually block the drain.

Have Questions?

We're happy to discuss what you're dealing with before you commit to anything. Call us and we'll tell you what's likely causing it.

Call (469) 501-9927

This content is reviewed by the Texas Drainage Solutions editorial team and informed by licensed-contractor sourcing, manufacturer documentation, and established industry standards for Drainage. Read our editorial standards.