The San Gabriel river runs through town and is impounded by a low dam. Locals like to visit the park there (six blocks north and one block west of the courthouse) and cross over to the rock bluffs on the north bank. The water is deep for a refreshing plunge from as high as you dare (up to about 40 feet).
Austin is located just 26 miles south of Georgetown on Inerstate 35 and is the capital of the state of Texas. Austin has all that Georgetown doesn't - hustle and bustle and traffic.