Topographic Map of Maryland

Public service & government in Baltimore, United States
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Since the Maryland Geological Survey was created in 1896, it has been basically a scientific-investigative organization. It is charged with the many …

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Q:
What is groundwater?
A:
Water that flows or seeps downward and saturates soil or rock, supplying springs and wells. The upper surface of the saturated zone is called the water table. ...
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