Drainage problems usually reveal themselves gradually. Standing water that lingers a day after rain might seem like a minor annoyance. But repeated saturation cycles damage turf, erode soil, attract pests, and can eventually threaten the foundation. Knowing what to watch for — and when to take it seriously — can save significant money and headaches.
McKinney sits in Collin County north of Plano, on Blackland Prairie black gumbo clay, a historic county seat that transformed from a modest agricultural town into one of the fastest-growing Metroplex suburbs over the past three decades. That growth pattern means McKinney has a genuinely mixed housing stock — a well-preserved historic downtown square with infrastructure over a century old, alongside extensive newer subdivision development from the 1990s onward. North Texas's intense spring thunderstorm season tests both eras of construction, though for different reasons: the historic core's century-old systems predate any modern storm-water standard entirely, while the newer subdivisions are still working through the first decades of settling into the area's notoriously expansive clay. Chestnut Square Historic Village, a cluster of preserved 19th-century buildings moved to a single site near downtown, and the McKinney Cotton Mill's restored smokestack both anchor a historic district built around the town's original 1840s courthouse square — infrastructure old enough to predate not just Collin County's suburban boom but the arrival of the railroad itself. Wilson Creek runs through the middle of the city and has shaped downtown McKinney's drainage since the original townsite was platted along it, a genuinely older and more direct creek relationship than the engineered detention-pond systems built into McKinney's newer subdivisions since the 1990s further from the historic core.
Common Drainage Warning Signs
These are the signs we hear about most often from McKinney homeowners:
Standing water in the yard more than 24-48 hours after rain
Water that doesn't drain within a day or two usually points to a grading or subsurface drainage issue rather than just a heavy storm.
Water pooling against the foundation or in a crawlspace after rain
This is one of the more urgent drainage signs, since prolonged moisture against a foundation can contribute to other structural issues over time.
A consistently soggy low spot in the yard, even during normal weather
A chronically wet spot (as opposed to a spot only wet right after heavy rain) is often solved with a French drain or rain garden rather than regrading alone.
What Causes These Problems
Most drainage problems in McKinney and Collin County come down to one or more of three conditions: soil that drains slowly (clay is the primary culprit in this region), low spots in the grading where water naturally concentrates, or runoff from neighboring lots, driveways, or roof drainage that overwhelms the yard's capacity to absorb. Identifying which condition applies determines the right solution — and a proper assessment before any work begins is the only way to get that right.
Have Questions?
We're happy to walk through your situation before you commit. Call us and we'll tell you honestly whether a french drain is the right solution for what you're dealing with.
Call (254) 269-7540This 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.