Platform: Coursera, University of Geneva
Although this course only takes around 10 hours to complete, you will still learn a lot! Over the course of 5 weeks you will look at the challenges private and public stakeholders are currently facing that are related to the water cycle. Additionally, you will also look into some approaches these stakeholders can use to combat these challenges.
Here is the link to the course: https://www.coursera.org/learn/water-management?