Paper Watershed – Extras

http://science.howstuffworks.com/environmental/conservation/issues/watershed.htm/printable

A cartoon explanation of a watershed.

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Map of watersheds in the United States.
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http://www.pgwa.org/the_spring_creek_watershed.htm

The Spring Creek Watershed in Penns Valley

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http://www.democraticunderground.com/discuss/duboard.php?az=printer_friendly&forum=115&topic_id=209377&mesg_id=209384

Map of Chesapeake Bay watershed