Lake Yonah is a lake on the Tugaloo River, separating Georgia and South Carolina.
The lake is created by the Yonah Dam, which is owned and operated by Georgia Power, and generates 22 megawatts. Lake Yonah is a residential lake with 72 vacation and permanent homes.
After the Tugaloo River flows from Yonah through the lower dam, it continues to Lake Hartwell, and joins the Savannah River, which empties into the Atlantic Ocean.
