Green infrastructure drainage of a commercial plaza without directly connected impervious areas : a case study

A paired-catchment study of two adjacent commercial areas in northern Sweden, one with Green Infrastructure (GI) storm drainage and the other with a conventional storm sewer system, served to evaluate the hydrological performance of both drainage systems and demonstrate advantages of GI. The GI catc...

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Veröffentlicht in:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 86(2022), 11 vom: 06. Dez., Seite 2777-2793
1. Verfasser: Rujner, Hendrik (VerfasserIn)
Weitere Verfasser: Leonhardt, Günther, Flanagan, Kelsey, Marsalek, Jiri, Viklander, Maria
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Water science and technology : a journal of the International Association on Water Pollution Research
Schlagworte:Journal Article Soil Water 059QF0KO0R
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520 |a A paired-catchment study of two adjacent commercial areas in northern Sweden, one with Green Infrastructure (GI) storm drainage and the other with a conventional storm sewer system, served to evaluate the hydrological performance of both drainage systems and demonstrate advantages of GI. The GI catchment avoided directly connected impervious areas by diverting runoff from a parking lot to a cascade of three infiltration features, a fractured rock strip draining onto a sloping infiltration area, followed by a collector swale. Both catchments were monitored over 4 years by measuring rainfall, runoff and, in the vicinity of the swale, soil water content and groundwater levels. For frequent storms, the median GI efficiencies in reducing runoff volumes and peak flows, and extending peak flow lags, were 96, 99 and 60%, respectively, compared to conventional drainage. The storm rainfall depth, initial soil water content, increases in intra-event soil water storage and groundwater levels had statistically significant effects on either runoff volume or peak flow reductions. No effects were found for storm rainfall intensity and duration, antecedent dry days, and initial groundwater levels. The study demonstrated that GI drainage can be successfully applied even in the challenging environment of a subarctic climate 
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700 1 |a Leonhardt, Günther  |e verfasserin  |4 aut 
700 1 |a Flanagan, Kelsey  |e verfasserin  |4 aut 
700 1 |a Marsalek, Jiri  |e verfasserin  |4 aut 
700 1 |a Viklander, Maria  |e verfasserin  |4 aut 
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