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Controlling floodwater mosquitoes by river regulation
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering.ORCID iD: 0000-0002-2342-2068
2019 (English)In: Water and Environment JournalArticle in journal (Refereed) Published
Abstract [en]

Floodwater mosquitoes cause serious problems especially the spread of mosquito-borne diseases. The main challenge is to implement acceptable general mitigation methods. In recent years, encouraging steps have been taken in favour of developing more sustainable measures such as modern biological methods. The novelty of the present study is in suggesting an alternative green method that can eliminate the use of any secondary biological or chemical agents. The method is based on establishing an alternative river regulation scheme that limits flooding of high-risk lowland areas. A combined hydrodynamic modelling and optimization method gave effective river regulation schemes. The main idea is to maintain the total power production for a modified inflow hydrograph. The approach was applied to a 30-km reach of the Österdalälven River located in central Sweden. It was found that with the specific constraints of the site a reduction of about 8% of lowland flood areas is possible if the inflow hydrograph is moderately modified by 20%. Higher reductions are possible by further modification of the hydrograph. The proposed method has a general character controlled by the specific site requirements of a critical flow or a water surface elevation. Based on the foregoing information, the method can be applied to similar sites.

Place, publisher, year, edition, pages
Blackwell Publishing Ltd , 2019.
Keywords [en]
Hydrodynamics, Optimization, Rivers, Biological methods, Flood mitigation, Flood plains, Hydrodynamic modelling, Mosquito-borne disease, Optimization method, River regulation, Water surface elevations, Floods
National Category
Water Engineering
Identifiers
URN: urn:nbn:se:kth:diva-252120DOI: 10.1111/wej.12474Scopus ID: 2-s2.0-85062543107OAI: oai:DiVA.org:kth-252120DiVA, id: diva2:1317681
Note

QC 20190523

Available from: 2019-05-23 Created: 2019-05-23 Last updated: 2020-01-02Bibliographically approved

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Dargahi, Bijan

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