province | Buenos Aires Province | Transvaal Province | Katanga Province | Cape Province | Western Province | New Ireland Province | Kars Province | Pichincha Province | Santa Fe Province | Dewa Province | Entre Ríos Province | Roman province | Rhine Province | Natal Province | Helmand Province | Battambang Province | La Convención Province | Hakkâri Province | Western Province (Papua New Guinea) | Northern Province | Mendoza Province | Guanacaste Province | Province of New York | Fars Province | Boulgou Province | Province | Manabí Province | El Oro Province | Tigray Province |
It originates from the Northern mountainous region of Xiangkhoang Province and flows south through Vientiane Province joining the Mekong at Vientiane Capital.
The special zone was created 1994 with area split off from the provinces Vientiane, and Xiangkhoang.