Bangshi River (also spelt Bansi) (Bengali: বংশী নদী) is an important river in central Bangladesh. It originates in Jamalpur, from the course of the old Brahmaputra and flows past the Madhupur tract. It flows through Tangail and meets the Tongi in Ghazipur. It passes near Jatiyo Smriti Soudho in Savar and falls into the Dhaleshwari. About 238 kilometres (148 mi) long, it is not navigable for most of the year except when swelled by the rains of the monsoon. Louhajang is a tributary of the Bangshi The river's average depth is 30 feet (9 m) and maximum depth is 80 feet (24 m).