Stormwater Basin and BMP Maintenance hero
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Service · BMP Maintenance

Detention pond and stormwater basin maintenance in San Antonio. On a schedule, with a crew inside 72 hours when something fails.

A Texas stormwater maintenance company that runs your basins and ponds on a calendar instead of on emergencies. Mowing, vegetation, sediment, trash racks, and inlets on the scheduled visit, and crews on site within 72 hours when a control is failing between them.

Turnaround
72-hour emergency response
Quote back in
48 hours
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Why this matters

Almost every basin failure we get called to was a maintenance item eighteen months earlier.

Almost every basin failure we get called to was a maintenance item eighteen months earlier. Cattails in the forebay, a trash rack nobody cleared, a side slope that started rilling after one wet spring. Maintained on a calendar, that work is mowing and a skid steer. Left alone, it becomes a breached embankment, a reportable discharge, and a Notice of Violation, and the repair costs twenty times the visits that would have prevented it.

Scheduled maintenance for detention ponds, retention basins, swales, inlets, and structural BMPs across the San Antonio metro, plus emergency repair when something breaks between visits. Closed out with photo documentation, as-built revisions, and city sign-off.

Basin and pond maintenance is dull work, and almost entirely predictable. Side slopes need mowing on a cycle so woody growth never establishes. Forebays and inlets collect sediment and have to be cleared before the storage volume behind them starts dropping. Trash racks bend out of plane after a heavy debris event. Outlet orifices plug. Vegetated swales lose grade. We put all of it on a written schedule sized to your site, usually six to eight visits a year in Bexar County, and each visit closes with a photo log that goes straight into your compliance file. A landscaping crew can cut the grass. What they cannot do is tell you the forebay has silted level with the main cell, which is the thing that actually costs money later. We wrote up what basin maintenance actually covers, and what neglect costs if you want the long version.

Between the scheduled visits, things still break, and that is the other half of this work. Concrete outfalls and masonry headwalls crack and spall at the joint. Energy dissipators undermine. Riprap channels migrate. Earthen embankments seep, settle, and then breach. Our crews are on site within 72 hours, and same day for anything actively discharging offsite. When the failure is reportable under the TCEQ MS4 program or a local stormwater ordinance, we coordinate the notification directly with the regulator so your owner is not drafting that email at 11 p.m. We rebuild each component to the geometry and capacity it was designed for instead of layering patch over patch until the next inspection cycle catches it.

The work runs across the whole spectrum. On the emergency end: basin breach, washed-out outfall, downstream sediment release, an inlet that collapsed under traffic. Our crews are on site within 72 hours, and when the failure is reportable under the TCEQ MS4 program or local stormwater ordinance, we coordinate the notification directly with the regulator so your owner isn't writing that email at 11 p.m. On the scheduled end: slope stabilization, trash-rack rebuild, concrete repair, re-vegetation, all quoted from a site walk and built into a maintenance budget that replaces year after year of patchwork.

Every repair closes out the same way: photo documentation tied to GPS, as-built revisions when the geometry changed, and municipal sign-off where the original permit requires it. If the failure later becomes a legal question (a downstream property owner, an insurance carrier, a TCEQ follow-up), the file holds up.

Our process

How a detention pond and basin maintenance program runs across a year.

  1. Step 01

    Site walk

    We walk every basin, pond, inlet, and outfall against the original approval, and tell you what has been maintained, what has not, and what has already crossed from maintenance into repair.

  2. Step 02

    Schedule

    A written visit calendar sized to the site and a flat annual number. Six to eight visits a year covers most Bexar County properties.

  3. Step 03

    Scheduled visits

    Mowing, woody growth, forebay and inlet sediment, trash racks, outlet orifices, debris haul-off. Photo log filed the same day.

  4. Step 04

    72-hour response

    Something fails between visits and a crew is on site within 72 hours, same day if it is discharging offsite. Concrete, masonry, earthwork, and re-vegetation in one mobilization.

What you receive

What a scheduled basin and pond maintenance visit covers.

  • Written maintenance schedule sized to your site, typically six to eight visits a year in Bexar County
  • Side-slope mowing, woody growth removal, and native vegetation management on the scheduled cycle
  • Forebay and inlet sediment clearing, trash-rack and outlet-orifice cleaning, debris haul-off
  • Photo log filed to your compliance record after every visit, so the maintenance history exists on paper
  • 72-hour emergency response for basin breach, outfall scour, and downstream sediment release
  • Concrete and masonry repair on outfalls, headwalls, junction boxes, and energy dissipators
  • Slope stabilization, erosion-control blanket, and native re-vegetation
  • TCEQ and municipal coordination on reportable failures, with as-built drawings and city sign-off at close out
Stormwater Compliant bmp maintenance work in the field
Common questions

Stormwater basin and detention pond maintenance questions.

72 hours to mobilize, and same day for anything actively discharging offsite. The after-hours line rings a CISEC inspector who can be standing in your basin that afternoon, not an answering service that takes a message.

We do the work. Outfall scour, riprap, headwall and concrete repair, slope stabilization, and regrading are in-house crews. The inspector who found the problem and the crew that fixes it work for the same company, so nothing gets lost in the handoff between two vendors.

Usually not, if you're restoring an existing structure to its approved design. If the repair changes the grade, the outlet, or the storage volume, the city wants a plan revision first. We pull the original approval before anybody touches anything and tell you which one you're in.

When it results in an unauthorized discharge: sediment leaving the property, a breach that sends untreated runoff to a creek or a neighbor, a spill that reaches the storm system. That is a TCEQ notification, and the clock on it is short. What is not reportable is a control that is degraded but still holding. We tell you which one you have on the first phone call, and when it is the reportable kind we write the notification with you instead of leaving your owner to draft it at 11 p.m.

For anything actively discharging, yes, and that is what the after-hours line is for. It rings a CISEC inspector, not an answering service. Scheduled repair work we keep on weekdays because that is when the city plan reviewer and the materials supplier are reachable, but we will run a weekend on a retail or medical property where weekday access genuinely does not work.

Yes, and we start by walking the site against the original approval rather than against their last invoice. Two things usually surface: work that was billed on a schedule but not actually done, and obligations in the recorded maintenance agreement that nobody has ever performed. You get both in writing before you sign anything with us, including the case where the honest answer is that your current vendor is doing fine.

Six to eight visits a year covers most commercial ponds in Bexar County, and the calendar is driven by the growing season more than by the storms. Mowing and woody growth run through spring and summer. Forebay and inlet sediment gets cleared once or twice depending on what is draining into it, and after any storm big enough to move material. A pond on a site with exposed soil upstream needs more. One on a fully stabilized campus needs less, and the schedule should say so.

It is part of it, and it is the easy part. Mowing keeps woody growth from establishing on the slopes, which genuinely matters. What a landscaping crew is not doing is measuring sediment depth in the forebay, clearing the outlet orifice, checking the trash rack, or noticing that the low-flow channel has started cutting. Those are the things that quietly take your storage volume, and they are the findings that show up in an MS4 audit. Keep your landscaper. The two jobs are not the same job.
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Free site walk, written scope of work, fixed-price quote. Usually back to you within 48 hours.