St. Marys River
A landscape image of the St. Marys River
Location
CountryUnited States
StateMaryland
CountySt. Mary's County
Physical characteristics
Mouth 
  location
Potomac River
  elevation
0 feet (0 m)
Length22.3 miles (35.9 km)

The St. Marys River (sometimes spelled St. Mary's River) is a 22.3-mile-long (35.9 km)[1] river in southern Maryland in the United States. It rises in southern St. Mary's County, and flows to the southeast through Great Mills, widening into a tidal estuary near St. Mary's City, approximately 2 miles (3 km) wide at its mouth on the north bank of the Potomac River, near the Chesapeake Bay to the east.

See also

References

  1. "National Hydrography Dataset high-resolution flowline data". U.S. Geological Survey. Retrieved August 15, 2011.

38°10′N 76°27′W / 38.167°N 76.450°W / 38.167; -76.450



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