Welcome to CSO, Oh No! You are about to go on the journey of a water droplet through Earth's hydrologic cycle, where humans are using the water. We all have an idea of how the water cycle works, with evaporation, condensation, precipitation, and accumulation. It may be a bit surprising as you follow your water droplet through its complex interactions with different types of human uses and human impacts! To keep track of your journey, please first make a copy of the tracking form. Next, choose one of our friendly water drops below to get started on your adventure!