top of page

Green Stormwater Infrastructure

Green Stormwater Infrastructure (GSI) is an approach to managing stormwater in ways that mimic nature. It aims to capture water where it falls, preventing runoff from entering our storm sewer systems. GSI employs various tools that allow runoff to get soaked up by plants, filter into the ground, evaporate, or be stored for human use.  GSI sees stormwater as a resource, not a nuisance.

Credit: City of Boston

Examples of Green Stormwater Infrastructure:
DSC_0508 (1)_edited.jpg
Rain Gardens

These are bowl-shaped gardens designed to capture and infiltrate stormwater.  Rainwater and snowmelt from hard surfaces is channeled to the garden where it pools, filters through plant and other organic material, and soaks into the ground rather than running off and entering the storm sewer system.

Conservation Landscape 1_edited.jpg
Conservation Landscaping

This is environmentally-friendly landscape design which aims to replace lawn grasses with native plants, shrubs, and trees in order to increase infiltration capacity and wildlife habitat.  This can be as simple as creating a new garden or expanding an existing one.

permeable.jpg
Permeable Hardscaping

There are alternatives to traditional paving materials which allow water to soak into the ground. These include pavers, pervious asphalt, and gravel and can be used in a wide range of settings from a simple pathway or driveway to a large commercial parking lot.

20230823_092341 (1).jpg
Downspout Planters

These planters are like a rain garden in a container and work great where space is limited. The plants and soils store, filter and evaporate water from your downspout, preventing runoff into our storm sewer systems. 

IMG_1903.JPG
Riparian Buffers

These areas are adjacent to a stream, lake, or wetland and contain a combination of trees, shrubs, and/or other perennial plants designed to filter pollutants from runoff before it enters the body of water. Buffers also shade streams, keeping water temperatures cooler which is essential for aquatic life to thrive.

DSC_0107 edited.JPG
Depaving

Many properties have sections of driveway, sidewalk, or patio that sit unused, creating runoff without serving a function for the residents. Removing these hard surfaces and replacing them with soil and plants benefits streams and allows the spaces to provide ecological value.

Copy of 20230823_114130.jpg
Rain Barrels

Hollow, plastic barrels which are attached to a downspout and designed to capture and store rainwater for use in yard and property maintenance.

Riparian Buffer _ Tree Planting 5.JPG
Tree Planting

Trees are sponges for water and are a great asset to a yard for their water infiltration, shade, and wildlife benefits. A 45-inch-thick Northern red oak will intercept over 23,000 gallons of water per year! Long term success can be ensured by planting the right size tree for your space.

downspout redirection.jpg
Downspout Redirection

Downspout redirection is one of the most straightforward and simple ways to protect our streams. Simply, it means redirecting your downspout so that stormwater stays on your property rather than entering municipal sewer systems.

What are the benefits of green stormwater infrastructure? 

Conserve Water and Save Money!

GSI additions like rain gardens and conservation landscapes can help save you money by decreasing the need for fertilizer and irrigation.  Rainwater harvesting tools like rain barrels can also help reduce the amount of city water you need to use in tasks like watering your plants and washing your car. 

 

Reduce Flooding

Did you know that flooding costs US communities approximately $32 billion annually?  GSI can help prevent flooding by decreasing the volume of stormwater that enters our sewers and waterways. We all live in a watershed, and large amounts of stormwater runoff from communities upstream create flooding issues for communities downstream. Further, frequent floods damage stream habitat, making it hard for aquatic insects and fish to survive.  â€‹â€‹â€‹

delaware river_edited.jpg

Decrease Pollution to Our Waterways

By infiltrating stormwater runoff, GSI also helps reduce water pollution by absorbing fertilizers, oil, heavy metals, sediment, and more.  This preventative approach increases the quality of the waterways we rely on for drinking water and recreational activities like swimming and fishing.  

 

Provide Habitat for Local Wildlife

Green stormwater infrastructure often incorporates native plants.  These plants are important sources of food and shelter for various species of wildlife, including eye-catching insects like monarch butterflies and lightning bugs, songbirds like goldfinches and blue jays, and vital pollinators like bees and hummingbirds.  Providing habitat for pollinators is imperative, considering that about 35% of the world’s food crops depend on pollination to produce.  â€‹â€‹ 

DSC_0068_edited_edited.jpg
DSC_0140_edited_edited.jpg

Beautify our Communities

GSI increases green spaces in our communities. According to the EPA, “Recent research has linked the presence of green space to reduced levels of inner-city crime and violence, a stronger sense of community, improved academic performance, and even reductions in the symptoms [of] attention deficit and hyperactivity disorders.” Increasing tree canopy in urban areas can also decrease extreme temperatures during heat waves and mitigate the heat island effect.

bottom of page