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RECONCILING ON-SITE STORMWATER BEST MANAGEMENT PRACTICE (BMP) EFFECTIVENESS AND PERFORMANCE WITH CURRENT HYDROLOGIC AND ECONOMIC PERCEPTIONS
Citation:
SHUSTER, W. D., H. W. THURSTON, AND Y. ZHANG. RECONCILING ON-SITE STORMWATER BEST MANAGEMENT PRACTICE (BMP) EFFECTIVENESS AND PERFORMANCE WITH CURRENT HYDROLOGIC AND ECONOMIC PERCEPTIONS. Presented at URBAN DRAINAGE MODELLING AND WATER SENSITIVE URBAN DESIGN 2006, MELBORNE, AUSTRALIA, April 03 - 07, 2006.
Impact/Purpose:
To inform the public
Description:
There is currently a dearth of data characterizing best management practice impacts on runoff production at the parcel-level. This data is of critical importance insofar as judging the effectiveness and reliability of on-site stormwater BMPs, with significant implications for both a) establishing the BMP infrastructure necessary for mitigating the deleterious impacts of urban stormwater flows, and b) performing cost-benefit analyses, which may affect the acceptance of BMPs onto individual parcels. Water balance data was drawn from instrumented BMP (i.e., rain garden, rain barrel) implementations located on several residential parcels (0.1 to 0.7 hectare) within each of two soil-climate zones in northeast Ohio (USA). We used this data to determine the percent stormwater runoff mitigated for natural rainfall events occurring over the 2005 water year, and how precipitation was redistributed into the various components of the hydrologic cycle. We then discuss implications for using parcel-level data to better understand BMP effectiveness through the incorporation of actual data and uncertainties into hydrologic models; and the economic ramifications of anomalies in performance due to large storm events.