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Earth's water
Earth's Water Topics
Earth's water
Where is Earth's water located?
Earth's water distribution
How much water is there on (and in)
the Earth?
Sea level and climate
The Water Cycle
Our
water-cycle diagram and summary
- in many languages
Follow this drip
through the water cycle
The water cycle for kids
See how a
2nd grade Australian class views the water cycle
Measuring water
How USGS monitors water
How is flow in a stream measured?
How does stream height relate to flow?
High water marks
The water around us
Watersheds
Impervious surfaces and flooding
Rain
Why
raindrops are different sizes
Are
raindrops tear-shaped?
Surface-water menu
Surface water use
Rivers and streams
Runoff
Rivers and the landscape
Monthly and yearly streamflow patterns
Sediment
in rivers
Comparing river lengths
Lakes and reservoirs
Q&A about floods
Q&A about droughts
Ground-water menu
What is ground water
Ground-water use
Importance of ground water
Trends in ground-water use
Ground-water quality
Pesticides in ground water
What is an
aquifer?
Water wells
What is an
artesian well?
Sinkholes
Land subsidence
Water dowsing
How hydrologists find ground water
Glaciers and icecaps
EPA's Surf Your Watershed