The Mackay River is a 13.4-mile-long (21.6 km)[1] tidal river in Glynn County, Georgia. It flows between Saint Simons Island to the east and the mainland, including the city of Brunswick, to the west, and connects to Buttermilk Sound at its north end and St. Simons Sound and the Brunswick River at its south end. It runs parallel to and west of the Frederica River. The Mackay River is crossed by the F.J. Torras Causeway traveling between Brunswick and Saint Simons. It is part of the Intracoastal Waterway.

Mackay River
Location of mouth
Location
Country	United States
State	Georgia
Physical characteristics
Source
• location	Georgia
Mouth
• coordinates	31°09′26″N 81°25′48″W
Length	13.4 mi (21.6 km)

The river most likely was named after Captain James Mackay, a pioneer citizen.[2]

See also

• List of rivers of Georgia

References

• U.S. Geological Survey Geographic Names Information System: Mackay River
• USGS Hydrologic Unit Map - State of Georgia (1974)