Only 2 years later, EGAT completed the high Ratchaprapha Dam, blocking off the "Klong Saeng River", a tributary of the Phum Duang River and creating a lake inside the park. The dam provides electricity for the south, and the lake became a major holiday destination for Thai and foreign tourists alike. There were several species of animals that had to be resettled to save them from drowning, as the lake slowly filled over a period of 3 years. Unfortunately, a study from 1995 revealed the loss of some 52 species of fish from the river, which could not survive in the stagnant water.