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dc.contributor.authorHernes, Ragni Rønneberg
dc.contributor.authorGragne, Ashenafi Seifu
dc.contributor.authorHassan Abdalla, Elhadi Mohsen
dc.contributor.authorBraskerud, Bent C.
dc.contributor.authorAlfredsen, Knut
dc.contributor.authorMuthanna, Tone Merete
dc.date.accessioned2020-09-10T11:58:20Z
dc.date.available2020-09-10T11:58:20Z
dc.date.created2020-07-13T11:02:47Z
dc.date.issued2020
dc.identifier.issn1998-9563
dc.identifier.urihttps://hdl.handle.net/11250/2677261
dc.description.abstractPaved surfaces, increased precipitation intensities in addition to limited capacity in the sewer systems, cause a higher risk of combined sewer overflows (CSOs). Sustainable drainage systems (SUDS) offer an alternative approach to mitigate CSO by managing the stormwater locally. Seven SUDS scenarios, developed based on the concept of effective impervious area reduction, have been implemented in the Grefsen catchment using the Mike Urban model. This study evaluated the hydrological performance of two SUDS controls (i.e. green roof (GR) and rain garden (RG)) modules of the model and the effect of the SUDS scenarios on the CSOs using event-based and continuous simulations. The Nash–Sutcliffe efficiency (NSE) along with flow duration curves (FDCs) has been used for evaluating the model performance. Event-based evaluations revealed the superior performance of the RG in reducing CSOs for larger precipitation events, while GRs were proven to have beneficial outcomes during smaller events. The study illustrated another way of assessing the continuous simulations by employing the FDCs. The FDCs were assessed against a discharge threshold at the outlet (which authorities can set as design criteria) of the catchment in terms of the extent, each scenario reduced occurrence and duration of outflow that invokes flow in the overflow pipe.en_US
dc.language.isoengen_US
dc.publisherIWA Publishingen_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleAssessing the effects of four SUDS scenarios on combined sewer overflows in Oslo, Norway: evaluating the low-impact development module of the mike urban modelen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.journalHydrology Researchen_US
dc.identifier.doi10.2166/nh.2020.070
dc.identifier.cristin1819296
dc.description.localcodeThis is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY-NC-ND 4.0), which permits copying and redistribution for non-commercial purposes with no derivatives, provided the original work is properly cited (http://creativecommons.org/ licenses/by-nc-nd/4.0/) 1 © 2020 The Authors Hydrology Research | 2020 doi: 10.2166/nh.2020.070en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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