Question

Located at the mouth of a major Georgia river · Fastest growing port in the United States · Owned and operated by the Georgia Port Authority · Located in Georgia's fifth-largest city

Answer 1

The Port of Savannah.

The Port of Savannah, at the mouth of the Savannah River, has shown a year-to-year growth rate in shipping volume of over 11%, higher than ports in New York and New Jersey as well as South Carolina and Texas.  (In the early 2000s, the growth rate of the Port of Savannah was even higher, at over 16%)