The Pa Sak Jolasid Dam or Pa Sak Cholasit Dam (Thai: เขื่อนป่าสักชลสิทธิ์) impounds the Pa Sak River at Ban Kaeng Sua Ten, Tambon Nongbua, Phatthana Nikhom District, Lopburi Province, Thailand. It is the biggest reservoir in Central Thailand.[1]
The 4,860-meter (15,940 ft) wide and 36.5-meter (120 ft) high dam is an earth-filled dam with an impervious core. The storage capacity is 785 million cubic meter of water at normal water level, with a maximum capacity of 960 million cubic meters. Additionally to the water management the dam also supplies about 6.7 MW of hydro-electric power.