Thuan Ninh Lake is located in M6 village, about 12 km from the center of Binh Tan commune, Tay Son district, Binh Dinh province. It is a large valley that has been blocked and stored water into an irrigation reservoir since 1993. With a design of 35.36 million m3, Thuan Ninh lake ensures water supply for 2,700 hectares of cultivated land in Tay Son district and part of Phu Cat district.