Underground detention and stormwater control measures (SCMs) for tight sites, parking lots and developments.
Storms off the Guadalupe can dump an inch of rain in under an hour, and in New Braunfels that water has to go somewhere fast. For sites with no room for a surface pond, that somewhere is underground: a chamber system, a vault, or a buried pipe network doing the job a detention basin would do on a bigger lot. We install, retrofit, and maintain subsurface stormwater control measures for properties from Gruene to Vintage Oaks to River Chase.
What we find underground here depends on which side of town you are on. Properties on the rocky Hill Country edge near Vintage Oaks often have systems that drain slow after a storm because the surrounding soil barely infiltrates and sends everything straight to the inlet. Riverfront lots near Gruene see the opposite problem: sandy fill washes into chambers and vaults during heavy flow, silting up a forebay or choking a pipe run within a season or two of a hard rain. Either way, the first sign is usually water sitting where it should not, or an inlet grate doing more filtering than it was built for.
Working with Corral Bros on this scope starts with a site walk, not a sales pitch. We pop the lids, check sediment depth, run a camera or jetter through a pipe run if needed, and tell the property manager or board what we actually found. If the system needs a retrofit, we work to the plan already on file or alongside the property's engineer rather than redesigning anything ourselves. Estimates are free and usually scheduled within 48 hours.
We're a local, family-built company that treats your New Braunfels property like our own, tidy crews, clear pricing, and subsurface stormwater control measures that holds up to Comal County conditions. Available as a one-time project or part of an ongoing plan.
A subsurface stormwater control measure is used when there isn't room for a surface pond, tight commercial lots, parking areas and dense developments. The system goes underground (chambers, vaults or pipe galleries) and stores or infiltrates stormwater beneath the site, freeing up the surface for parking or building.
Yes. Subsurface SCMs accumulate sediment and debris and must be inspected, cleaned and jetted on a schedule to keep working and stay compliant. We service, clean and retrofit underground detention and infiltration systems throughout Central Texas.
We walk the site with whoever manages it, pop any accessible lids, and check chambers or vaults for sediment load and standing water. For developments around Vintage Oaks or River Chase, we also look at how surface flow reaches the system before we quote anything. Estimates are free, no-obligation, and usually scheduled within 48 hours of your call.
Slow drawdown after a storm, water backing up in a parking lot inlet, or a compliance letter from the property's engineer are the usual triggers. Comal County's mix of rocky edge soils and sandy riverfront fill means sediment moves differently site to site, so we set a schedule based on what we find rather than a flat calendar.
Yes. Most of our subsurface work happens through existing access points, vaults, and cleanouts, so we do not need to tear up a leasing office lot or a Gruene-area retail center to get to the system. We coordinate timing with property management to keep parking loss and tenant disruption to a minimum.
Hill Country edge soils near Vintage Oaks tend to be rocky and shallow, which slows water into the system and concentrates sediment at inlets. Riverfront sand near Gruene and the Guadalupe moves faster and can wash into chambers during heavy rain. Both conditions change how often jetting or sediment removal is needed, and we account for that on site rather than guessing.
Access is the biggest factor: a buried vault under a parking lot costs more to service than one with a surface cleanout. Sediment volume, pipe length, and whether we are doing routine maintenance versus a retrofit after a system has failed also move the number. We give you a specific figure after the site walk, not a guess over the phone.
Free, no-pressure estimate from a local crew. Call (737) 404-9343 or request a quote online.
