The Ubol Ratana Dam (formerly known as the "Phong Neeb Dam") is a multi-purpose dam located in Kok-Soong, Ubol Ratana in the Khon Kaen Province.It impounds the Nam Phong, a tributary of the Mekong River, and was given its current name by Royal Permission in 1966, in honour of Thai princess Ubolratana Rajakanya.The dam is considered to have multi-purpose functions, electricity generation, irrigation, flood control, transportation, fisheries and as a tourist attraction. This is an earth core rockfill dam, and was constructed in 1964.