Water Basics - United States Geological Survey

 

• Hydrology
  Primer—What is hydrology and what do hydrologists do?
• USGS Water
  Science  School—Find information on many aspects of water, along
  with pictures, data, maps, and an interactive center where you can give opinions
  and test your water knowledge.                  
• The Water Cycle
• Water
  Properties
• Surface Water
• Groundwater
• Aquifer Basics
• Groundwater Basics: Resources and Introductory
  Information
• Water
  Education Posters (Online only)—Cartoon posters for grades K-12
  on the subjects of wetlands, water use, wastewater, navigation, groundwater,
  coastal hazards, watersheds, water quality, and hazardous waste.
• Science in
  Your Watershed— Find information about your watershed
• A Journey with Water—Educational coloring book
• Glossaries of Water Resources Terms
• A-Z Index of
  hydrologic terms