CrowdWater is a citizen science project at the University of Zurich, aiming to collect hydrological data. Everyone who is interested in water can join! Download the CrowdWater app - available for Android and iOS and become a hobby-hydrologist! Android: https://play.google.com/store/apps/details?id=com.spotteron.crowdwater iOS: https://itunes.apple.com/us/app/crowdwater-spotteron/id1213513623?mt=8 www.crowdwater.ch