 It flows through Seka District (Nong Khai Province), Wanon Niwat (Sakon Nakhon Province), and Si Songkhram District and empties into the Mekong River in "tambon" Chai Buri, Tha Uthen District, Nakhon Phanom Province.It is long.The Songkhram is one of the more important but lesser known rivers in Thailand's northeast.