Potomac River Historical Area Act

Potomac River Historical Area - Establishes the Potomac River Historical Area. Defines the boundaries of the Area.

Authorizes the Secretary of the Interior to acquire lands, waters, and other interests within the historical Area.

Permits the owners of property acquired by the Secretary for the Area to retain a right of use and occupancy for specified purposes.

Directs the Secretary to formulate and transmit to Congress a master plan for the Area. States that such plan shall indicate the location and cost of public facilities and the projected need for additional facilities.

States that the Area shall be administered in accordance with the laws applicable to the National Park System.

Provides for the inclusion within the Area of the Cheseapeake and Ohio Canal National Historical Park and the Harpers Ferry National Historical Park. States that each Park shall continue to be administered as it is now.

Authorizes and directs the Administrator of the Environmental Protection Agency to analyze the effect of existing activities within the Area on the quality and quantity of the Potomac River waters within the Area. Directs the Administrator to submit the Congress the results of such analysis.

Establishes the Potomac River Historical Area Advisory Commission. Provides for representatives on the Commission from specified Virginia and West Virginia counties.

Authorizes the appropriation of such sums as may be necessary to carry out the provisions of this Act.