American Geosciences Institute
American Geosciences Institute: How Is Water Distributed?
See how the topography and gravity affect the distribution and flow of Earth's water.
American Geosciences Institute
American Geosciences Institute: Where Does Our Water Come From?
See how rainwater and snow melt flows from high areas to low areas which ultimately results in Earth's groundwater.
NOAA
Noaa: National Weather Service: Simplified Hydrologic Cycle
The National Weather Service offers information on the processes that make up the water (hydrologic) cycle, including evaporation and transpiration, precipitation, run-off, infiltration, and percolation. Has a good illustration and...