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Chesapeake & Ohio Canal National Historical ParkPhoto of canal boat in Georgetown.
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Chesapeake & Ohio Canal National Historical Park
Mollusks
 

Along the C&O Canal shoreline of the river there are only freshwater mollusks because the Potomac is a freshwater source.

Photo Potowmack Company canal lock at Great Falls Virginia.  

Did You Know?
George Washington's dream of connecting the eastern states with the western frontier led to the creation of the Patowmack Company. Locks were built around unnavigable parts of the Potomac River for improved commerce. The C&O Canal inherited the right of way after the Patowmack Company's demise.

Last Updated: July 30, 2006 at 20:52 EST