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Potential benefits of managed aquifer recharge MAR on the Island of Gotland, Sweden
SGU Geological Survey of Sweden, Sweden.
RISE - Research Institutes of Sweden, Built Environment, Energy and Circular Economy. Chalmers University of Technology, Sweden.ORCID iD: 0000-0002-0231-6450
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
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2019 (English)In: Water, ISSN 2073-4441, E-ISSN 2073-4441, Vol. 11, no 10, article id 2164Article in journal (Refereed) Published
Abstract [en]

The Island of Gotland (3000 km2), east of mainland Sweden, suffers from insufficient water availability each summer. Thin soils and lack of coherent reservoirs in the sedimentary bedrock lead to limited reservoir capacity. The feasibility of Managed Aquifer Recharge (MAR) is explored by identifying suitable areas and estimating their possible contribution to an increased water availability. MARis compared to alternative water management measures, e.g., increased groundwater abstraction, in terms of costs and water availability potential. Results from GIS analyses of infiltration areas and groundwater storage, respectively proximity to surface water sources and surface water storage were classified into three categories of MAR suitability. An area of ca 7700 ha (2.5% of Gotland) was found to have good local conditions for MAR and an area of ca 22,700 ha (7.5% of Gotland) was found to have moderate local conditions for MAR. These results reveal the MAR potential on Gotland. The water supply potential of MAR in existing well fields was estimated to be about 35% of the forecasted drinking water supply and 7% of the total water demand gap in year 2045. It is similar in costs and water supply potential to increased surface water extraction. © 2019 by the authors.

Place, publisher, year, edition, pages
MDPI AG , 2019. Vol. 11, no 10, article id 2164
Keywords [en]
Decision-support, Groundwater, Mapping, MAR, Sweden, Aquifers, Decision support systems, Groundwater resources, Potable water, Recharging (underground waters), Underground reservoirs, Water conservation, Water management, Water supply, Decision supports, Groundwater abstraction, Groundwater storage, Managed aquifer recharges, Management measures, Potential benefits, Surface water sources, Surface waters, aquifer, bedrock, decision support system, drinking water, GIS, infiltration, mapping method, surface water, water availability, water demand, water storage, Gotland
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40869DOI: 10.3390/w11102164Scopus ID: 2-s2.0-85074365246OAI: oai:DiVA.org:ri-40869DiVA, id: diva2:1376788
Note

Funding details: Svenska Forskningsrådet Formas, 942-2015-130; Funding details: Tillväxtverket; Funding details: 754412; Funding text 1: The work was funded by the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No 754412; Region V?stra G?taland; Region Gotland; The Swedish Agency for Economic and Regional Growth; and the Swedish Research Council Formas contract no 942-2015-130.The authors would like to thank Mikael Tiouls and LarsWesterlund at Region Gotland for contribution with local expertise in the comparative study.

Available from: 2019-12-10 Created: 2019-12-10 Last updated: 2019-12-10Bibliographically approved

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