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5/24/2018 | 10:15 AM - 10:30 AM | ASSESSING THE EFFECTIVENESS OF URBAN GARDENS AS GREEN INFRASTRUCTURE IN THE WASHINGTON, DC AREA | 310 A

ASSESSING THE EFFECTIVENESS OF URBAN GARDENS AS GREEN INFRASTRUCTURE IN THE WASHINGTON, DC AREA

Urban gardening is increasingly popular in the Western world. Proponents claim that it offers numerous benefits to health, communities, economic development and environmental protection. This study examines community gardens’ contribution to storm water management in the Washington DC area and explore whether community gardens should be acknowledged as green infrastructure. The results of a pilot study focused on developing methods to capture surface runoff during simulated rainfall events. Within plant beds and co-located grassy areas, runoff analysis showed the amount of surface runoff generated and the concentrations of macronutrients and trace metals present in it. Findings suggest that the runoff coefficient (percent of rainfall that becomes runoff) for both surface types in community gardens in DC is relatively low with 2% on average. Manganese and potassium were observed to leach out of soils, though these two metals from soils are considered to be negligible sources of freshwater pollution. Results of this study indicate that community gardens may contribute to storm water management in DC. The design and preliminary results of a comprehensive DCWRRI-funded study is being used to continue the study through the 2018 growing season.

Nitrogen
Phosphorous
Hydrology

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Presenters/Authors

Anna Spiller (), University of Bonn, anna.rmspiller@googlemail.com;