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Sustainability aspects of water regulation and flood risk reduction in Lake Vänern
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Centre for Climate and Safety.ORCID iD: 0000-0002-2992-9572
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Centre for Climate and Safety. Bonn University.
Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Geography, Media and Communication.ORCID iD: 0000-0001-8788-0044
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Centre for Climate and Safety.
2014 (English)In: Aquatic Ecosystem Health & Management, ISSN 1463-4988, E-ISSN 1539-4077, Vol. 17, no 4, p. 331-340Article in journal (Refereed) Published
Abstract [en]

A modern feature of flood risk management is to integrate ecological, economic and social aspects in risk prevention and mitigation. Risk-reducing measures can be in conflict with ecosystem functions and complicate upstream/downstream relations. Flood risks are also influenced by processes in the catchment, such as changes in climate and land-use, or increases of vulnerable urban areas. Lake Vänern in Sweden has high ecological and social values but is also flood-prone, which in this article has been analyzed from a perspective of sustainable development. Lake Vänern and the Göta älv River are used for drinking water supply, shipping, hydropower production, fishing, tourism, as a recipient for industries and wastewater plants, etc. The flood risks are connected to landslide and industrial risks. One interest at stake is the drinking water supply for 800,000 persons in the Gothenburg region. According to climate scenarios, flood risks will increase in the 21st century due to increased precipitation. Recent studies in the region were used to identify relevant interests and values connected to Lake Vänern. The study reveals differing interests in relation to water level regimes. From a flood protection perspective (risks around the lake and downstream to Gothenburg) a low and stable water level is beneficial. For shipping and hydropower, a stable medium-high water level is wanted, whereas from an ecosystem and landscape development perspective larger water level amplitudes are optimal. One out of a few reasons for this is the need to prevent a massive increase in vegetation in coastal areas. There are good reasons to have a broad decision-support, representing different values and interests, when the permanent water regulation scheme will be decided. This study also addresses the potential to reconcile the concept of flood risk management with that of a sustainable development.

Place, publisher, year, edition, pages
Taylor & Francis, 2014. Vol. 17, no 4, p. 331-340
Keywords [en]
values, ecosystem, integration, sustainable development
National Category
Geosciences, Multidisciplinary
Research subject
Risk and Environmental Studies
Identifiers
URN: urn:nbn:se:kau:diva-35713ISI: 000346423200004OAI: oai:DiVA.org:kau-35713DiVA, id: diva2:798502
Available from: 2015-03-26 Created: 2015-03-26 Last updated: 2017-10-02Bibliographically approved

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Nyberg, LarsDahlström, MargaretaPettersson, Andreas

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