Drought in Sweden Jenny McCarthy 2018-10-08 WG Groundwater, Vienna

May – August 2018: Extreme weather situation % of normal precipitation July

Groundwater indicator September 2015-2018 Stations in esker formations, natural conditions Much above normal Above normal Normal Below normal Much below normal 2015 2016 2017 2018 Quantiles used: 15, 35, 65 and 85%

May 2018 Small aquifers Depth m Precipitation mm Large aquifers

Sep 2018 Very small aquifers

Examples measures to mitigate the impact of drought Campaign : 20% reduction in water use Irrigation ban (issued by municipalities) during summer Public awareness campaigns New desalination plants up and running, Baltic Sea Water pipeline from the mainland to island in Baltic Sea Improved data and information (drought risk website, increased monitoring, new groundwater mapping using Sky TEM, etc) New national drinking water council Local and regional water plans Initiative on methods for reducing runoff

Impact on status/ trends GWBs Mainly in quaternary deposits Number: 3705 Cover 9 % of country area Median size: 1,7 km2 Poor quant status: 9 Work in progress at local water authorities– no national results -Good recovery in aquifers after abundant precipitation this autumn/winter -Measures have been taken to reduce abstraction pressure (successful results reported) Unclear change in number of GWBs in poor status due to the recent drought New monitoring efforts in identified risk areas that faced drinking water shortage this summer Poor quant. status

Thank you. jenny.mccarthy@sgu.se