Many Hydrologists work to provide safe water for drinking, while others study how to prevent flooding and droughts or how to use dams to create electricity. They use their knowledge of geology, chemistry and computer modeling to help us better understand water resources. This career requires a Bachelor's Degree and Postgraduate work. To prepare for this career you might collect rainwater and snowfall data and share it in graphical form; explore rivers, streams, and lakes; or study the geology of your state. Potential salary: $76,000/year.