Detention and retention pond construction that controls stormwater and meets site requirements.
Detention ponds in Wimberley sit at the bottom of some of the steepest, rockiest drainage in the Hill Country. Thin soil over limestone does not absorb much, so a hard rain off Cypress Creek or the hills around Woodcreek hits a basin fast and all at once. A pond built or graded for average conditions somewhere flatter tends to fall behind out here.
You can see the pattern in the basins we get called to. Shallow topsoil means runoff carries sediment and rock fines straight into the forebay, so silt builds up faster than on a clay-bottomed site. Steep cedar-covered slopes around the pond grow volunteer saplings and brush that nobody planted and nobody wants, and their roots work into embankments and liners. Outlet structures clog with cedar litter and limestone gravel washed down from above, which slows drawdown and leaves standing water where the plan calls for a basin that empties between storms.
When Corral Bros handles this scope, we start by walking the site with whoever is responsible for it, whether that is a property manager, an HOA board, or a GC closing out a development. We look at the forebay, the slopes, the outlet, and we build or repair to the property engineer's plan rather than guessing at specs. The work covers excavation and shaping, inlet and outlet structures, riprap and liners, and slope stabilization so the basin does the job it was designed for.
We're a local, family-built company that treats your Wimberley property like our own, tidy crews, clear pricing, and detention ponds that holds up to Hays County conditions. Available as a one-time project or part of an ongoing plan.
A detention pond temporarily holds stormwater runoff and releases it slowly, so a developed site doesn't flood downstream neighbors or overwhelm storm drains. Most Central Texas commercial sites, subdivisions and larger developments are required to have detention as part of their drainage permit.
A detention pond drains down to empty between storms and is dry most of the time, while a retention pond holds a permanent pool of water. We build and maintain both, choosing the right one based on your site's soils, drainage requirements and available space.
We schedule a free, no-obligation site visit, usually within 48 hours of your call. We walk the basin with you, check the forebay, slopes, inlet and outlet, and note anything that is keeping the pond from draining the way the plan intends. From there we put together a scope based on what the site actually needs, not a generic package.
It depends on the terrain above the basin and how much cedar and limestone runoff it catches, but many Hill Country ponds need attention every few years rather than on a fixed schedule. Watch for slow drawdown after rain, a forebay that looks shallower than it used to, or brush taking hold on the embankment. Any of those is a sign to call before the next heavy storm overwhelms it.
Detention basins usually sit apart from buildings and parking, so most of this work does not interrupt daily activity on the property. We coordinate access and timing with whoever manages the site, whether that is an HOA board, a property manager, or an on-site super, and keep equipment and staging away from occupied areas and traffic flow.
Shallow topsoil over limestone means less absorption and faster, harder runoff into the basin, which silts in forebays quicker and stresses outlet structures more than in flatter, deeper-soil areas. It can also mean we hit rock sooner than expected during excavation or grading, which changes how a slope or basin floor gets shaped. We plan for that going in rather than discovering it mid-job.
The biggest factors are how much sediment has to come out, how much of the embankment and outlet structure need rebuilding versus cleaning, and how much rock we hit during excavation. Slope stabilization, riprap, and liner work add scope depending on condition. We give you a firm number after the site walk, based on what your specific basin needs rather than a flat rate.
Free, no-pressure estimate from a local crew. Call (737) 404-9343 or request a quote online.
