Cordeaux. All materials for construction were transported from Bargo railway station on a specially built road, all the other dams in the scheme used rail transport. There were some light tramways constructed at the dam site, however it would appear that no locomotives were employed; skips and other items being moved by winch, horse or manpower. Nepean Dam The Nepean Dam is a heritage-listed arch dam across the Nepean River; it is tall and long. Construction on the Dam began in 1926, construction was delayed for two years during the Depression, it was finally completed in 1935. The capacity is listed variously as . The Nepean Reservoir has a small storage capacity in relation to its large catchment area of . While its capacity is much the same as that of Cataract and Cordeaux Reservoirs, its catchment basin is two and a half times as extensive as Cataract and three and a half times as extensive as Cordeaux. The Nepean Reservoir therefore fills more rapidly and, under normal conditions, is drawn upon more freely than the other reservoirs. The dam is located at an elevation of above sea level and the construction cost was A£2,062,000. Railway sidings were established on the Main Southern railway line at a point between Bargo and Yerrinbool. Transport to the dam site was again by light railway, on this occasion of standard gauge. This avoided transhipment from the Government vehicles bringing materials from large commercial quarries, effectively making the line an extended privately owned siding. The line was long through gentle countryside. Trains were worked by a variety of locomotives, including a former Sydney Steam Tram Motor. Additionally, there was a system of narrow () gauge lines in use at the dam construction site. Additional work was carried out on the spillway between 1943 and 1947 to prevent scouring of the dam foundations. Gallery See also List of reservoirs and dams in New South Wales Sydney Water Shoalhaven Scheme Upper Canal System Lower Prospect Canal Reserve Guildford West pipehead and water supply canal References Attribution This Wikipedia article was originally based on the "New South Wales State Heritage Register" published by the Government of New South Wales under CC-BY 3.0 AU licence (accessed on 13 April 2012); and based on the "New South Wales State Heritage Register" published by the Government of New South Wales under CC-BY 3.0 AU licence (accessed on 29 September 2017);