Drainage Assessment in McAllen, TX

Before recommending any solution, a local contractor walks your property and assesses the actual drainage situation, then gives you an honest answer on whether a french drain is the right fix — or says so if another approach would work better. You get a clear picture of the problem and honest options for addressing it at no charge.

McAllen sits closer to the Rio Grande's floodplain than Edinburg to its north, and the city's rapid growth as the Valley's primary retail and medical hub, especially since the 1990s expansion of cross-border commerce, has built dense commercial corridors along 10th Street and Nolana Avenue that add substantial impervious-surface runoff to what the surrounding residential drainage was originally sized for. McAllen's older, more established neighborhoods date to the early-1900s citrus-boom decades when the Valley's now-famous grapefruit industry took hold, sitting on the same heavy delta clay as the rest of the region but with drainage infrastructure aged nearly a century in the most historic sections. The flat, near-zero natural slope typical of the entire lower Rio Grande Valley applies here as much as anywhere, making engineered grading the primary defense against standing water.

What Gets Checked During a Drainage Assessment

A drainage assessment checks the grade around your foundation, the slope of the yard, soil type and permeability, downspout placement, existing drainage features, and low points where water naturally concentrates. In Hidalgo County's clay-heavy soils, particular attention goes to how water is moving through the soil versus across the surface — that distinction determines whether a french drain, catch basin, or surface regrading is the right solution.

What You Get After the Assessment

After walking the property, you'll get a plain-terms explanation of what was found along with an honest recommendation. If a french drain is the right solution, you'll learn where it should go, how it will be configured, and what it will cost. If another approach is more appropriate, you'll be told that too. There is no pressure to hire anyone after the assessment.

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