What is green stormwater infrastructure?

Top definitions of GSI:

University of Arizona:

Green stormwater infrastructure in Tucson encompasses a suite of techniques and practices designed to manage stormwater runoff in urban environments using natural and engineered systems. These approaches focus on reducing runoff volume, improving water quality, and enhancing groundwater recharge.

City of Tucson, Storm to Shade:

Green stormwater infrastructure refers to decentralized stormwater management practices that utilize natural processes to capture, store, and treat stormwater runoff. These practices aim to reduce the impacts of flooding, erosion, and pollution while enhancing the resilience of the local water supply.

Pima County Regional Flood Control District:

Green stormwater infrastructure involves the use of vegetation, soils, and other natural elements to mitigate the adverse effects of stormwater runoff. GSI practices aim to mimic natural hydrological processes and promote sustainable water management in urban areas.

Environmental Protection Agency (EPA):

Green stormwater infrastructure consists of natural or built systems that mimic natural hydrological processes to manage stormwater runoff. These systems help reduce flooding, improve water quality, and conserve natural resources. Examples include: rain gardens, bioswales, permeable pavements, green roofs, and constructed wetlands.

American Society of Landscape Architects (ASLA): 

Green stormwater infrastructure encompasses a range of strategies and practices that utilize natural processes to capture, absorb and manage stormwater runoff. These strategies include the use of vegetation, permeable surfaces, and rainwater harvesting amongst other techniques to enhance water infiltration and filtration in urban development.