2010-2019 Historical Data for Lake Constance 2019 2018 2017 2016 In 2016, the daily mean water level reached a maximum of 513 cm on 2016-06-20 and 2016-06-21. The minimum level of 280 cm was reached on 2016-01-02. 2015 2014 2013 2012 2011 2010