Editorial: Utilizing hydroinformatics for efficient water systems management

This Special Issue of Journal of Hydroinformatics presents a collection of fully peer reviewed papers initially presented at the 3rd EWaS International Conference ‘Insights on the Water-Energy-Food Nexus’. The conference was held from 27th to 30th of June 2018, in Lefkada Island/Greece (http://ewas3.civ.uth.gr/). This conference (EWaS3) was organized by the University of Thessaly/Civil Engineering Department (chairman: Prof. V. Kanakoudis-University of Thessaly/Founder of EWaS Series of Conferences; vice chairman: Assist. Prof. E. Keramaris-University of Thessaly). EWaS series of conferences started in 2013, when the 1st EWaS (EWaS1) Conference was held in Thessaloniki/ Greece and continued in 2016 when the 2nd EWaS (EWaS2) Conference was held in Crete/Greece.