Stormwater management is one of the most critical engineering challenges in low-lying coastal Florida. Civil Seas Engineering designs stormwater systems that reduce onsite flooding risks, improve water quality, protect regional aquifers, and ensure compliance with strict environmental standards.
Our Stormwater Services
We leverage advanced hydrologic software and low-impact development (LID) principles to design systems that mitigate storm runoff:
- Detention & Retention Basin Design: Engineering dry retention areas, wet detention ponds, and underground storm vault systems to capture, slow, and filter stormwater before releasing it.
- Green Infrastructure: Designing natural, bio-retention systems such as bioswales, rain gardens, and vegetated swales that capture stormwater and facilitate natural groundwater recharge.
- Permeable Pavement Systems: Implementing porous asphalt, pervious concrete, or interlocking concrete pavers to reduce total impervious surface areas and control runoff at the source.
- Hydraulic & Hydrologic Modeling: Performing detailed flood routing calculations, pipe network modeling (using ICPR, BMP Trains, WaterCAD, or Civil3D), and pre- vs. post-development flow analyses.
- MS4 & BMP Compliance: Helping municipal and industrial clients comply with National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) permits and implement Best Management Practices (BMPs).
Specialization: Tidally-Influenced Outfalls & High Water Tables
St. Augustine’s stormwater systems must operate under the influence of fluctuating tides and shallow groundwater. We specialize in designing outfalls equipped with check-valves (e.g., inline rubber duckbill valves) to prevent sea-water intrusion during high tides, and designing elevated retention basins that maintain required storage volumes even in areas with high water tables.
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We provide regulatory-compliant designs and permitting coordination for residential, commercial, and municipal clients.