Shitalakshya River originates from the old brahmaputra and bifurcates into two courses at Toke in Gazipur district. One of the courses named the banar flows southwest and at Lakpur is renamed as the Shitalakshya. It then flows east of Narayanganj town. The Shitalakshya falls into the dhaleshwari near Kalagachhiya. The length of the river is about 110 km and the width near Narayanganj is about 300 m but reduces to about 100 m in the upper reach. Its highest discharge has been measured at 2,600 cumec at Demra. The river is navigable throughout the year and shows little erosional tendency.
In the past, the famous muslin industry of the country flourished along the Shitalakshya. At present, a number of heavy industries including the adamjee jute mills, stand on the banks of Shitalakshya. There are three thermal powerhouses located at Palash, north of Ghorashal, and one at Siddhirganj, on the bank of the river. The important riverport of Narayanganj is also situated on its bank. The river was once famous for its clear and cool water. The river goes under tidal effect for about five months of the year but never overflows its banks. [Md Mahbub Murshed]
See map in brahmaputra-jamuna river system.