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Important for you to know:

  • Discrete sample data delivery is undergoing modernization. Starting March 11, 2024, there will be a period when new sample data will not be accessible. Learn more about the upcoming change on our blog.
  • New to WDFN: customize and keep track of your list of favorite monitoring locations and data types using the new My Favorites page. To learn more, read our announcement on our Water Data for the Nation blog.

Hydrological Unit: Lower Potomac

HUC Name
0207001101 Quantico Creek-Potomac River
0207001102 Potomac Creek-Potomac River
0207001103 Nanjemoy Creek-Potomac River
0207001104 Zekiah Swamp Run
0207001105 Wicomico River-Frontal Potomac River
0207001106 Upper Machodoc Creek-Frontal Potomac River
0207001107 Saint Clements Bay-Frontal Potomac River
0207001108 Nomini Creek-Frontal Potomac River
0207001109 Saint Marys River-Frontal Potomac River
0207001110 0207001110-Potomac River
Monitoring Locations