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Maryland State Report
Other states that contain this watershed:
Virginia, Lower Potomac Watershed

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Water Quality Data Available for this Watershed

Maryland, Lower Potomac Watershed


Click on the watershed for an interactive map

Search for a waterbody within Lower Potomac
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Listed Waters for Reporting Year 2006
Maryland, Lower Potomac Watershed

Description of this table
NOTE: Click on the underlined "Waterbody Name" to view a Waterbody report.
Breton Bay MD-02140104-T Bays and Estuaries square miles
Mattawoman Creek MD-021401110784-R Rivers and Streams miles
Mattawoman Creek MD-021401110787-R Rivers and Streams miles
Mattawoman Creek MD-02140111-T Rivers and Streams miles
Mattawoman Creek MD-021401110781-R Rivers and Streams miles
Nanjemoy Creek MD-021401100778-R Rivers and Streams miles
Port Tobacco River MD-02140109-T Tidal Stream miles
Potomac River Lower Tidal MD-02140101-T Rivers and Streams miles
St. Clements Bay MD-02140105-T Bays and Estuaries square miles
St. Mary'S River MD-021401030714-R Rivers and Streams miles
St. Mary'S River MD-021401030716-R Rivers and Streams miles
Wicomico River MD-021401060739-R Rivers and Streams miles
Wicomico River MD-02140106-T Tidal Stream miles
Zekiah Swamp MD-02140108 Estuary square miles

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Causes of Impairment for Reporting Year 2006

Maryland, Lower Potomac

Description of this table
Biological 8
Sediment 6
Nutrients 4
Toxics 1

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Cumulative TMDLs by Pollutant

Maryland, Lower Potomac Watershed

This chart includes TMDLs since October 1, 1995.

Description of this table
NOTE: Click on the underlined "Number of TMDLs Completed" value to see a listing of those approved TMDLs for the pollutant.
Number of Causes of
Impairment Addressed
Nitrogen, Total color.gif 6 6
Phosphorus, Total color.gif 6 6
Total Suspended Solids (TSS) color.gif 6 6
Fecal Coliform color.gif 4 4
Nitrogen color.gif 2 2
Phosphorus color.gif 2 2
Nutrients color.gif 1 1
Polychlorinated Biphenyls (PCBs) color.gif 1 1

Total: 28 TMDLs; 0 Causes of Impairment



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