Green Stormwater Infrastructure

Green Stormwater Infrastructure, or GSI, is the next generation of stormwater management. Traditional stormwater management focuses on collecting stormwater via catch basins and piping it directly to the nearest natural water body. This can be expensive due to the construction of extensive piping systems, as well as the maintenance involved, not to mention the potential for detrimental environmental impacts to the water body’s ecosystem.

GSI uses the natural absorptive and filtering properties of soil and vegetation to capture and infiltrate rain where it falls, providing water quality benefits, as well as enhancing aesthetics, improving air quality, and providing pockets of natural habitat.

Watershed Consulting Associates has modeled and designed numerous GSI practices including:


  • Blanchard Beach Water Quality Improvement Project

    Watershed helped design and implement a stormwater retrofit plan including a hydrodynamic swirl separation, stream stabilization and restoration, and ecological landscape design.
    Partners: Lakeside Environmental Group (LEG)


  • Handy Apartments Porous Asphalt

    Watershed used an innovated permeable pavement system to reduce stormwater runoff at this residential re-development in Essex Junction, VT.


  • College Street Green Stormwater Infrastructure (GSI) Retrofit Project

    When the City of Burlington, VT wanted to analyze and model the complex stormwater runoff in its urban core for Green Stormwater Infrastructure (GSI) implementation, they chose Watershed for the task.


  • Unversity of Vermont Bioretention Learning Laboratory

    University of Vermont research professor, Stephanie Hurley, received a grant to create an outdoor learning laboratory in an effort to monitor bioretention performance under simulated climate change scenarios. With Lakeside Environmental Group, Watershed provided Hydrologic and Hydraulic modeling support and design guidance for the implementation of eight curb-side bioretention cells, on the University of Vermont campus.


  • Kenyon’s Hardware Parking Lot Infiltration Retrofit

    Working with the Friends of the Winooski River, Watershed conducted a hydrologic analysis and designed a solution to mitigate damaging stormwater runoff in a small hardware store parking lot that was causing substantial erosion of the stream bank.


  • St. Albans Park and Ride Gravel Wetland

    Gravel wetlands are a cost-effective, efficient means of treating stormwater runoff, which is why the VT Department of Environmental Conservation contracted Watershed to design a gravel wetland system for a Park and Ride facility in St. Albans, VT.



Green Stormwater Infrastructure

Green Stormwater Infrastructure

We model, design, plan, and supervise construction of innovative stormwater management practices such as rain gardens, bio-swales, and green gutters to make your next project more attractive, functional, and economical.

Permitting

Permitting

From Multi-Sector General Permits to Construction General Permits and everything in between, we can guide you through the process efficiently from start to finish.

River Management

River Management

We specialize in assisting communities and businesses with the prevention and repair of damage to river ecosystems through complex modeling and comprehensive design.

Water Quality Investigation

Water Quality Investigation

We offer comprehensive water quality sampling and analysis including Illicit Discharge Detection and Elimination (IDDE) surveys to help you meet your water quality goals.

Watershed Master Planning

Watershed Master Planning

We provide technical assistance to communities developing Stormwater Management Programs under the MS4 permit, implementation of Total Maximum Daily Load (TMDL) plans, and BMP site evaluation and design services.