dc.contributor.author | Guerrero, Jose-Luis | |
dc.contributor.author | Rasmussen, Jes Jessen | |
dc.date.accessioned | 2021-08-25T06:10:10Z | |
dc.date.available | 2021-08-25T06:10:10Z | |
dc.date.created | 2021-08-24T09:59:14Z | |
dc.date.issued | 2021 | |
dc.identifier.isbn | 978-82-577-7385-4 | |
dc.identifier.issn | 1894-7948 | |
dc.identifier.uri | https://hdl.handle.net/11250/2771053 | |
dc.description | Project Manager/Main Author Jes Jessen Rasmussen/José-Luis Guerrero | en_US |
dc.description.abstract | We assessed three different flood mitigation options, based on simple models, to reduce flooding problems in Bjørkelangen town. The mitigation options i) small debris dams, ii) re-meandering of Lierelva, and iii) restoration of Liermåsan and Bliksrudmåsan were considered for current and future flow scenarios in a climate change context. We evaluated flood reduction potential for peak flow episodes with return periods of 100 years. Restoration of Liermåsan and Bliksrudmåsan may store approximately 4-5% of the total water volume comprising maximum daily peak flow and approximately 2-3% in context of future climate change. Importantly, however, the total water storage capacity increases non-linearly with increasing area of peat land and establishing peat land in 5% of the catchment would create a 10% flooding reduction. Construction of small debris dams in forested areas at approximately 1,000 sites may store approximately 5% of the total water volume comprising the 1-day peak flow and approximately 2-3% in context of future climate change. Re-meandering of Lierelva was not found to have significant effects on flood mitigation in Bjørkelangen. Restoration of Liermåsan and Bliksrudmåsan should receive highest priority due to a combination of highest cost-efficiency and high flood mitigation potential. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Norsk institutt for vannforskning | en_US |
dc.relation.ispartof | NIVA-rapport | |
dc.relation.ispartofseries | NIVA-rapport;7649 | |
dc.subject | Vannforvaltning | en_US |
dc.subject | Water managment | en_US |
dc.subject | Flomreduksjon | en_US |
dc.subject | Flood mitigation | en_US |
dc.subject | Restaurering av myr | en_US |
dc.subject | Restoration of mires | en_US |
dc.subject | Restaurering av vassdrag | en_US |
dc.subject | Stream restoration | en_US |
dc.title | Flood mitigation options to reduce flooding risks in Bjørkelangen town | en_US |
dc.type | Research report | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | © Norsk institutt for vannforskning/Norwegian Institute for Water Research.
The publication can be cited freely if the source is stated. | en_US |
dc.subject.nsi | VDP::Matematikk og naturvitenskap: 400 | en_US |
dc.subject.nsi | VDP::Mathematics and natural scienses: 400 | en_US |
dc.source.pagenumber | 32 | en_US |
dc.source.issue | 7649 | en_US |
dc.identifier.cristin | 1928225 | |
cristin.ispublished | true | |
cristin.fulltext | original | |