Tuirial River or Sonai is an important river in the northern part of
Mizoram. It flows northward and merges in the
Barak River in
Cachar District in
Assam. This river flanks the eastern part of the
Aizawl city, whereas the western side is surrounded by the
Tlawng River. The mini zoo in the
Sihphir village is on the banks of the Tuirial River. It also favors the Tuirial Hydro Electric Project.