Kbal chhay Waterfall is located in Khan Prey Nup, take about 16 kilometers north of downtown Sihanoukville by National Road No4.
Kbal Chhay was discovered in 1960. 3 years later, it was developed into a reservoir to supply clean water to the city of Sihanoukville.
The water at Kbal Chhay comes from many sources along the mountain range, although only three sources are visible. The waterfall is 14 meters high, is the point where those three sources join.