Stormwater Symposium

Oral

394866 - Hydrologic and Water Quality Impacts of a Green Street Retrofit in Fayetteville, North Carolina

Tuesday, June 5
10:30 AM - 12:00 PM
Location: Greenway AB
Co-Authors: Kathryn Shaneyfelt, Raleigh, NC – NC State University; William Hunt, Raleigh, NC – NC State University

Impervious cover associated with urbanization has direct hydrological and water quality effects on landscapes and surface waters. Green streets have the ability to mitigate the impact of urban development by reducing and treating stormwater runoff at its source. An urban two-block corridor has been retrofitted in Fayetteville, North Carolina with green infrastructure to manage stormwater runoff. This is the first comprehensive green street in North Carolina, and the retrofit involves redeveloping an entire corridor during scheduled street repair. Stormwater control measures (SCMs) include: bio-infiltration bump-outs, permeable pavement, and suspended pavement systems. This study aims to evaluate the ability of the green street to manage stormwater runoff in an urban area and to gain a large-scale perspective on the environmental impacts of green streets. Water quality samples and stormwater runoff data have been analyzed at both the street level and individual suspended pavement systems to determine any significant statistical differences between the pre- and post-retrofit hydrology and water quality data. These data will be incorporated into pre- and post-retrofit PCSWMM models to optimize green street design in North Carolina. Monitoring green streets both pre- and post-retrofit is crucial in understanding and recognizing green streets’ environmental impacts.

Sarah Waickowski, E.I.

Extension Engineer
NC State University

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394866 - Hydrologic and Water Quality Impacts of a Green Street Retrofit in Fayetteville, North Carolina



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