Turag River drawn into the Jamuna system by the invasion of the Lohajang river (in Tangail district). The Turag remains active, although it has only a small flow in the dry season. Jamuna sediments have invaded its valley almost as far south as Tongi Khal perhaps since the Assam earthquake in 1950. It joins the buriganga near Mirpur (Dhaka) and is tidal in its lower reaches. It is navigable by country boats throughout the year. The whole of the Turag valley south of the Mymensingh Trunk Road is notable for boro rice cultivation. [Sifatul Quader Chowdhury]