dc.contributor.author | Hernes, Ragni Rønneberg | |
dc.contributor.author | Gragne, Ashenafi Seifu | |
dc.contributor.author | Hassan Abdalla, Elhadi Mohsen | |
dc.contributor.author | Braskerud, Bent C. | |
dc.contributor.author | Alfredsen, Knut | |
dc.contributor.author | Muthanna, Tone Merete | |
dc.date.accessioned | 2020-09-10T11:58:20Z | |
dc.date.available | 2020-09-10T11:58:20Z | |
dc.date.created | 2020-07-13T11:02:47Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 1998-9563 | |
dc.identifier.uri | https://hdl.handle.net/11250/2677261 | |
dc.description.abstract | Paved 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.iso | eng | en_US |
dc.publisher | IWA Publishing | en_US |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Assessing the effects of four SUDS scenarios on combined sewer overflows in Oslo, Norway: evaluating the low-impact development module of the mike urban model | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.journal | Hydrology Research | en_US |
dc.identifier.doi | 10.2166/nh.2020.070 | |
dc.identifier.cristin | 1819296 | |
dc.description.localcode | This 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.2020.070 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |