A catch basin is a grated surface inlet that collects standing water or runoff and routes it through underground pipe to a discharge point. They work well in low spots where water consistently pools at the surface — often in combination with french drains for a complete drainage system.

Seguin is one of the oldest incorporated towns in Texas, founded in the 1830s along the Guadalupe River at a natural crossing point, and its historic downtown — including the Sebastopol House and the county's namesake courthouse square — carries drainage infrastructure that's had nearly two centuries to interact with the Guadalupe's well-documented flood history, a longer and more direct river relationship than Schertz's Cibolo Creek-adjacent growth further west. The river bottom soil near downtown Seguin is heavier, more alluvial clay than the Blackland-to-post-oak transition found on the town's newer edges along the I-10 corridor, where growth tied to San Antonio's eastward expansion has built out more recently. That split between old river-town core and newer highway-corridor growth gives Seguin a genuinely two-part drainage profile.

Catch Basins vs. French Drains

A french drain intercepts subsurface water as it moves through the soil. A catch basin captures water that has already surfaced and pooled. Many drainage systems in Guadalupe County use both: french drains to intercept groundwater flow, and catch basins at surface low points where water concentrates. Together, they handle both the subsurface and surface components of the drainage problem.

Installation and Maintenance

The basin gets set at grade level, connected to underground PVC pipe with proper slope, and routed to a suitable outlet. Catch basins require periodic cleaning as leaves, silt, and debris accumulate over time — your contractor will walk you through the maintenance routine after installation.

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) 269-7540

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.