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Storm Drainage & Retention Construction work by Dunn Infrastructure Group

Storm Drainage & Retention Construction

We provide comprehensive stormwater management solutions that protect communities while ensuring environmental compliance. We install systems that are designed to effectively manage water flow and provide solutions for storm water management.

01Scope

What's included

  1. 01Custom drainage system construction
  2. 02Retention and detention solutions
  3. 03Erosion control measures
  4. 04Water quality treatment systems
  5. 05Sustainable construction solutions
02Process

How the job runs, start to closeout.

  1. 1

    Drainage Assessment

    Analysis of water flow patterns, soil conditions, and environmental requirements.

  2. 2

    System Design Review

    Review of comprehensive drainage solutions tailored to site conditions.

  3. 3

    Implementation

    Professional installation of drainage systems and retention structures.

  4. 4

    System Testing & Cleaning

    Verification of proper water flow and system functionality.

  5. 5

    Maintenance Planning

    Development of long-term maintenance strategies and documentation.

04Markets

Who we do this work for

Storm Drainage & Retention Construction looks different depending on who's buying it. Pick the closest fit to see how we scope, schedule, and close out the work.

05FAQ

Storm Drainage & Retention Construction: frequently asked questions

What is a stormwater retention system?

A stormwater retention system captures and holds rainwater runoff to prevent flooding, reduce erosion, and improve water quality before releasing it slowly into the environment. Common types include retention ponds, underground chambers like CulTec systems, and bioswales.

What are the environmental regulations for storm drainage in Georgia?

Georgia requires compliance with the Georgia Stormwater Management Manual and EPA National Pollutant Discharge Elimination System (NPDES) permits. Projects must include erosion and sediment control plans and post-construction stormwater management to protect water quality.

How do you handle storm drainage for new developments?

We design and install complete stormwater management systems including catch basins, storm pipes, retention/detention facilities, and outfall structures. Our solutions comply with local development requirements and ensure effective water management for the life of the project.

What is a CulTec underground retention system?

CulTec is an underground stormwater retention and detention system that uses high-density polyethylene (HDPE) chambers buried beneath the surface. It provides the same storage capacity as traditional ponds while maximizing usable land area for development.

Last updated: September 24, 2026