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 .
Lake Yonah is a residential lake with seventy - two vacation and permanent homes .
After the Tugaloo River flows from Yonah through the lower dam , Lake Yonah continues to Lake Hartwell , and joins the Savannah River , which empties into the Atlantic Ocean .
Lake Yonah is a residential lake with seventy - two vacation and permanent homes .