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How can I obtain historical USGS topographic maps?
What work does the USGS do related to Asian carp?
How do we know the climate is changing?
Where does the USGS monitor stream water quality in real time? How can I see these sites on a map and get to the data?
Learn about eutrophication
Is there water under the ground?
What causes drought?
Does the Bakken Formation contain more oil than Saudi Arabia?
Will California eventually fall into the ocean?
Why is the ocean salty?
USGS Spotlight Questions