The dam was built in 1984–1986 with the assistance of the Soviet Union.[3] The power plant became operational in 1988. The dam forms a man-made reservoir lake known as Trị An Lake. La Ngà village on the La Ngà River was created as a result of population displacement.[4]
^Vietnam Economic Times - Volume 102 - Page 10 Viện kinh tế thế giới (Vietnam) "The "village" of La Nga was only established when Tri An lake was created for a hydro-power plant in 1986. At first it was just a gathering of a few homeless people from various places and backgrounds who had one thing in common: land ..."
