Chapter
Apr 26, 2012
Green Roof Hydrologic and Water Quality Performance from Two Field Sites in North Carolina
Authors: A. C. Moran [email protected], W. F. Hunt [email protected], and J. T. Smith [email protected]Author Affiliations
Publication: Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges
Abstract
Two green roofs were constructed and monitored in North Carolina's Neuse River Basin (WCC in Goldsboro and B&J in Raleigh). Data was collected from WCC from April 2003 to September 2004; B&J data collection began in July 2004. The hydrologic and water quality performance of two different green roofs were investigated. Each green roof retained a significant (p<0.05) proportion of the rainfall, peak outflows were significantly (p<0.05) reduced from the green roofs, and each green roof had substantial delays in runoff. Both concentrations and amounts of total nitrogen and total phosphorus increased from rainfall to green roof outflow and from the control roof outflow to green roof outflow. It was determined that the soil media, composed of 15% compost, was leaching nitrogen and phosphorus into the green roof outflow. This field study demonstrated the importance of green roof media selection in locations where nutrients are a concern.
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Published In
Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges
Pages: 1 - 12
Copyright
© 2005 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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Authors
Affiliations
Water Quality Specialist, City of Raleigh, NC. E-mail: [email protected]
Assistant Professor and Extension Specialist, Department of Biological & Agricultural Engineering, North Carolina State University, NCSU Box 7625, Raleigh, NC 27695-7625. E-mail: [email protected]
Extension Engineer, Department of Biological and Agricultural Engineering, North Carolina State University. E-mail: [email protected]
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.