Sekong River

The Sekong River is a river in Southeast Asia. The river begins in Central Vietnam's Tha Thien–Hu Province and runs through southern Laos and eastern Cambodia for 480 kilometers (300 miles). It meets the Mekong River near the Cambodian town of Stung Treng. The international border between Laos and Cambodia is formed by a section of the river.

Sekong comes from the Truong Son mountainous region in Thua Thien Hue province, in the west of A Luoi district. Se Asap is the name of the first section, which is currently known in Vietnam as A Sap River. The Sekong River runs through the provinces of Sekong, Saravane, and Attapeu in Laos. Banbak, Lam Mam, and Attapeu are Laotian settlements on the Sekong.

The Sekong river takes water from a major tributary in Laos, the Se Kaman (or Xe Kaman). The Dak P'Lo stream in Dak P'Lo commune, Dak Glei district, Kon Tum province, Vietnam, is the source of Se Kaman. On Se Kaman, the Lao government has constructed a variety of hydropower and irrigation projects. The Xekaman 3 Hydropower Plant, for example, has been operational since 2013. It is the longest Rivers in Laos.

Length: 480 km