After conducting research, it was determined that there is no Glenn Ferry Road located in Anderson County, Georgia. However, there is a Glenn Ferry Road located in Anderson County, South Carolina. Therefore, the following information pertains to the Glenn Ferry Road boat ramp located in Anderson County, South Carolina.

The Glenn Ferry Road boat ramp is a concrete boat ramp located on Lake Hartwell. It is approximately 20 feet wide and can accommodate multiple boats launching and retrieving at the same time. Lake Hartwell is a large reservoir that spans across parts of Georgia and South Carolina and is popular for recreational activities such as boating, fishing, and swimming.

The boat ramp at Glenn Ferry Road allows for various types of watercraft to be launched, including powerboats, sailboats, kayaks, canoes, and jet skis. However, it's important to note that certain types of watercraft may be restricted from use by local or state laws, and users should always check the latest regulations before launching their vessel.

It's worth noting that the accuracy of this information may change over time and should be verified with the latest resources available.