This report for the first time presents and analyzes a wide range of global data at the watershed level, assessing 145 watersheds around the world. The analysis focuses on watershed, as ecological units and on the risks of degradation from human activities, which may undermine their ability to provide ecological services and maintain intact the biodiversity found within them. The analysis is based on 15 global indicators that characterize watersheds according to their value, current condition, and vulnerability to potential degradation. These indicators, presented in more than 150 maps, give a unique global perspective on the largess transboundary watersheds, as well as many smaller basins and sub-basins.