Effective stormwater management preserves watersheds by preventing erosion, reducing pollution, preserving ecosystems, and protecting both open waters and fresh water supplies. With federal and state standards consistently tightening, cities and suburban areas continuing to grow steadily, and climate change potentially increasing the probability of extreme weather events, it has never been more important to effectively control, convey, and treat stormwater.

Stormwater BMP systems can often replace the need for expensive storm sewers, providing natural treatment of stormwater, groundwater replenishment, and a beautiful wetland habitat for native flora and fauna.

BMP systems throughout the Staten Island Bluebelt provide water quality improvement, aesthetic enhancement, and community benefits.

Green infrastructure solutions such as rain gardens, constructed wetlands, bioretention areas and swales, and blue and green roofs can serve as valuable additions to a community’s stormwater management toolbox.

Right of Way Bioswales (ROWBs) are simple green infrastructure practices that capture stormwater runoff from the public right of way and infiltrate/evapotraspire the water, reducing the flow into the sewer system. Hazen and Sawyer is working with New York City Department of Environmental Protection, New York City Department of Design and Construction, and New York City Economic Development Corporation to plan, design and construct ROWBs and other green infrastructure practices for over 6,100 acres in New York City.

Restoration of an existing residential canal system at Jones Creek significantly reduces sediment and other pollutant loadings to the Loxahatchee River Aquatic Preserve.

A fish by-pass allows the migration of fish from downstream tidal waters to upstream waters, preserving an important function of the natural habitat at Mill Pond.

Porous pavement at the Bradley Avenue Water Treatment Plant prevents stormwater runoff and replenishes groundwater.

We're currently evaluating several ecological restoration strategies, including reintroduction of ribbed mussel beds, oyster habitat reefs, and eelgrass, as part of the overall Jamaica Bay restoration.

Our work at Platts Creek provides water quality treatment for the 1,000-acre drainage basin and restores 80+ acres of wetlands directly adjacent to the North Fork of the St. Lucie River.

Stormwater Pioneer

At Hazen and Sawyer, we offer sustainable, watershed-based approaches to stormwater management. We have done extensive work that focuses on reducing stormwater runoff by employing Low Impact Development (LID) techniques and Better Site Design practices and naturally treating stormwater runoff through Best Management Practices (BMPs).

This more sustainable alternative applies a comprehensive, watershed-based approach that minimizes the conveyance of stormwater, maximizes upstream infiltration and treatment, and uses natural features, such as creeks, streams, and swales, to move as much of the water as required and aesthetically enhance the area. Natural features are supplemented with engineered structures to ensure drainage of developed areas, existing roads and infrastructure, and interface with collection and treatment systems. This approach vastly reduces the construction and maintenance cost of the stormwater infrastructure, can recharge groundwater aquifers and restore wetlands, and better withstand intense storm events than conventional infrastructure alone.

With our experience, know-how, and technology to help you tackle all your stormwater issues, you can confidently – and cost-effectively – meet necessary standards and help sustain the environment. Our forward-minded approach leads to enhanced effectiveness of design infrastructure, lowered costs, and improved water quality.

Our toolkit includes:

  • Understanding of latest technology and BMPs
  • Expertise with engineered wetlands and environmental restoration
  • In-depth, up-to-date understanding of climate change and how it may affect operations
  • Extensive experience with modeling and GIS
  • Detailed knowledge of state and federal regulations, and diligent tracking of regulatory changes to TMDLs and NPDESs

Utilizing our talented staff with real-world experience, we skillfully design economical solutions that fully address the challenges of today and of tomorrow. We can guide you successfully through increasingly stringent regulations, changing climatic conditions, and continued community growth to a successful stormwater management program.