The Blackwater railway system is located in Central Queensland and services the coal mining area of the Bowen Basin. It carries coal, as well as products, to other destinations by way of connections to the North Coast Line at Rocklands and the Goonyella Line via Gregory coal mine to Oaky Creek. Together with the Moura line the two railway systems are known as the Capricornia Coal Chain. The Blackwater system is narrow gauge 1,067 mm (3 ft 6 in) and electrified using 25 kV 50 Hz. The system is used by both electric and diesel locomotives.