Stormwater Management for Municipal Projects

Engineered Systems for Runoff Control, Compliance, and Water Quality

Managing stormwater isn’t just about moving water—it’s about meeting regulations, protecting infrastructure, and safeguarding community resources. Diversified Drainage partners with municipalities and engineering teams across Minnesota to deliver stormwater management systems that control flow, prevent flooding, and meet MS4, NPDES, and water quality standards. Whether you're designing a new right-of-way project or retrofitting aging infrastructure, we build systems that perform.


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/OUR PROCESS

About the Service: What Is Municipal Stormwater Management?

Stormwater management for municipal sites involves controlling the volume, rate, and quality of runoff from impervious surfaces like roads, sidewalks, parking lots, and public spaces. Our systems help cities stay in compliance with environmental requirements and protect infrastructure from water damage.

Our Stormwater Management Capabilities

  • Detention & Retention Ponds
    Design and construction of wet and dry ponds for volume control and sediment capture.
  • Storm Drain Networks & Catch Basins
    Installation or upgrade of inlet structures and storm sewer tie-ins to manage flow during peak storm events.
  • Bioswales, Filter Strips & Rain Gardens
    Green infrastructure to meet water quality standards and BMP guidelines for MS4 compliance.
  • Underground Detention Systems
    Space-saving solutions for volume control in tight urban environments, often under streets or parking lots.
  • Flow Control Structures
    Valves, weirs, and orifices engineered to regulate discharge rates from municipal systems.
  • Stormwater Retrofits
    Upgrades to outdated or undersized drainage infrastructure to meet modern code and capacity needs.
  • Sediment & Debris Management
    Design and integration of structures to capture pollutants and protect downstream systems.
/Municipal-Grade Solutions

Why Municipalities Choose Diversified Drainage

MS4/NPDES Compliance Support - We understand the permit frameworks and design systems that meet state and federal stormwater standards.
Built for Heavy Use - Our systems are engineered for long-term performance under vehicular traffic, freeze/thaw, and seasonal overloads.
Partnered with Engineers - We collaborate with municipal staff and consulting engineers to ensure every component meets spec.
Efficient & Scalable - From small right-of-way projects to full watershed-scale drainage upgrades, we deliver results on time and to spec.
Environmentally Responsible - Support local water quality goals with systems that treat runoff and reduce pollutants before discharge.
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Where We Work

We provide municipal stormwater management services for:

Cities & townships
County road commissions
Public works departments
Engineering consultants & civil design teams
DOT projects & roadway drainage
Parks, trails, and recreational developments

Built for Minnesota’s Watersheds

Our stormwater systems are engineered to perform under:
Clay and low-infiltration soils
Heavy snowmelt and rain-on-snow events
Urban runoff with high pollutant loads
Stringent municipal and watershed authority requirements

Why Choose Diversified Drainage? 

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25+ Years of Experience

With over two decades of hands-on experience, we’ve seen—and solved—every kind of drainage issue for both homes and commercial properties.

Fully Licensed & Insured

Our team is fully licensed, insured, and qualified to work on residential neighborhoods, large-scale commercial sites, and everything in between.

Local Expertise

As a Plymouth-based company, we understand the soil, slope, and drainage challenges unique to Minnesota properties.

Effective Solution Design

We provide high-quality drainage systems that are both cost-effective and built to perform season after season.

Customer-first Service

From homeowners to property managers, we prioritize clear communication, honest recommendations, and long-term results.

Ready to Upgrade Your Stormwater Infrastructure?

We help cities, counties, and consultants plan and build high-performance stormwater systems that stand up to Minnesota’s toughest drainage challenges.
(763) 443-0575
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Municipal Drainage FAQs

Proper municipal drainage starts with the right system—and a clear understanding of how it works. Explore these FAQs to learn more about drainage.

What types of stormwater systems do you install?

We install open and closed systems—everything from bioswales and ponds to storm sewer infrastructure and underground detention vaults.

Can you help with MS4 compliance?

Yes. We understand the regulatory landscape and can design systems that align with your stormwater pollution prevention plan (SWPPP).

Do you work on retrofits or only new projects?

We do both. Many of our projects involve retrofitting outdated systems to meet modern volume and water quality standards.

Do you work directly with municipalities or through engineers?

Both. We partner with city staff, civil engineers, and contractors to provide a seamless design–build experience.