Commercial Retention & Detention Basins in Old Lyme, CT

Drainage Pro of CT designs and installs retention and detention basin systems for commercial properties throughout Old Lyme, CT. We build exterior stormwater management infrastructure that meets the performance standards required by Connecticut DEEP, the Old Lyme Planning and Zoning Commission, and the Old Lyme Inland Wetlands Commission for commercial development near the town's coastal, estuarine, and inland regulated resources.

Retention & Detention Basins for Old Lyme, CT Commercial Properties

Old Lyme's regulatory environment for commercial stormwater management is shaped by a combination of factors that make it more demanding than most inland Connecticut towns of comparable size. The town sits at the mouth of the Connecticut River where it meets Long Island Sound, with hundreds of acres of protected tidal marsh fringing the river, the Lieutenant River and Black Hall River tidal corridors draining significant portions of the upland, and an estimated 2,000 acres of inland wetlands distributed across the watershed. Commercial development and redevelopment in Old Lyme that triggers Connecticut DEEP General Permit for Stormwater Discharge from Construction Activities, or that requires Old Lyme Inland Wetlands Commission or Planning and Zoning Commission approval, may require retention or detention basin systems as a condition of that approval or permit.

Retention basins hold stormwater on site and allow it to infiltrate slowly into the surrounding soil, providing both peak discharge reduction and stormwater quality treatment through settling and biological uptake before any discharge reaches regulated receiving waters. On Old Lyme commercial sites where regulated wetland or coastal resources are in proximity to the discharge path, retention basin design accounts for the specific water quality requirements applicable to the receiving environment.

Detention basins temporarily hold stormwater on site and release it at a controlled rate through a designed outlet structure, reducing peak discharge rates from developed commercial sites to pre-development levels and preventing downstream flooding in Old Lyme's tidal drainage corridors during and after major storm events. Commercial development near the Lieutenant River, the Four Mile River, and the tidal portions of Old Lyme's stream network is particularly likely to face detention basin requirements as a condition of site plan or wetlands approval.

When Old Lyme Commercial Properties Need Retention or Detention Infrastructure

Our Approach to Retention and Detention Basin Design in Old Lyme

Every retention or detention basin project we undertake for an Old Lyme commercial property begins with a site assessment that evaluates the applicable permit requirements, the site's soils and hydrology, the character of the receiving waters or wetlands to which the basin will ultimately discharge, and the space and grade constraints that shape what type of basin system is feasible on your specific site. We design to the performance standards required by the applicable permit or approval condition, provide detailed as-built documentation after installation, and back every installation with our 5-year workmanship warranty.

Get a Free Commercial Stormwater Basin Assessment in Old Lyme, CT

If your Old Lyme commercial project requires retention or detention basin infrastructure as a condition of Connecticut DEEP, Inland Wetlands Commission, or Planning and Zoning approval, we are ready to come out and assess your site. We will evaluate the applicable permit requirements, your site's specific conditions, and give you a clear and honest plan with itemized pricing before any work begins. No pressure. No guessing. Just commercial retention and detention basin installation in Old Lyme, CT designed to meet your specific permit requirements.