Underground detention and stormwater control measures (SCMs) for tight sites, parking lots and developments.
Subsurface stormwater control measures in Lockhart carry a job that is easy to forget until it fails: holding back water on sites where the ground underneath will not take it quickly. Between Historic Square, Clear Fork, and Brock, the mix of century-old county-seat lots and newer development south of Austin means a lot of underground vaults, chambers, and pipe systems are quietly doing that work right now, mostly unchecked.
Lockhart sits on deep blackland clay, the same soil that made this good farming country and the same soil that sheds a heavy rain fast once it is saturated rather than letting it soak in. That shows up underground as a silted forebay, a chamber system that drains slower than it did last year, or an outlet structure choked with the fine clay sediment that washes off bare slopes and new embankments before grass takes hold. On older properties the system itself may predate current SCM standards entirely, and on newer sites around the growing edges of town, construction runoff is still finding its way into systems built to handle a finished, stabilized site.
Working with Corral Bros on this scope starts with a straightforward site walk, usually scheduled within 48 hours of your call, where we check access points, sediment depth, and how the system is actually performing against what the plan calls for. From there we handle inspection, cleaning, jetting, and retrofit work to keep the system functioning to the plan or alongside your property engineer. You get a crew that treats your parking lot, your tenants, and your board's time with the same care we would want on our own property.
We're a local, family-built company that treats your Lockhart property like our own, tidy crews, clear pricing, and subsurface stormwater control measures that holds up to Caldwell 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 you, pull any access lids or cleanouts we can get to, and check inlet and outlet condition along with sediment depth in the chambers or vault. For HOA and POA boards we will also walk the surface drainage feeding the system, since that tells us a lot about what is happening underground. Estimates are free and we usually get on site within 48 hours of your call.
Most subsurface systems on blackland clay sites in Lockhart need inspection and cleaning on a yearly cycle, with jetting as sediment buildup requires it. Systems feeding areas with bare slopes or heavy clay runoff, like a lot of the newer development around Clear Fork and Brock, tend to silt up faster and may need a mid-year check. Your property engineer or your permit conditions may set a specific interval, and we will work to that schedule.
Standing water in a parking lot or landscape bed after a storm has passed is the most common sign, along with a slow-draining forebay or an outlet structure that looks dry when it should be flowing. If a board member or property manager notices ponding that was not there before, or a camera inspection during a resale or refinance turns up sediment, that is usually enough reason to schedule us ahead of the normal cycle.
We stage trucks and equipment to block off the fewest spaces possible and coordinate timing with property management or the board ahead of the visit. Most chamber and vault work happens through existing access points, so we are not tearing up drive aisles or green space. For retail centers and apartment communities we can schedule around peak traffic hours when that is workable for your tenants.
Deep blackland clay sheds water fast once it is saturated, so subsurface systems here tend to get hit with heavy sediment loads in a short window during a storm rather than a steady trickle. That sediment settles in forebays and chambers and slows drawdown over time. Older systems serving Historic Square properties built before current SCM standards sometimes need a retrofit to handle that volume properly.
Access is the biggest factor: a system with clear, unobstructed lids costs less to service than one buried under landscaping or parking lot overlay. Sediment volume, the size and type of chamber or vault system, whether jetting is needed versus a straightforward vacuum, and any retrofit work to bring an older system up to current standards all affect the final number. We will give you a clear estimate before any work starts.
Free, no-pressure estimate from a local crew. Call (737) 404-9343 or request a quote online.
