Wikipedia
Kolong
The Kolong River is a tributary of the Brahmaputra River, which divert out from the Brahamputra river in Hatimura region of Jakhalabandha ( Nagaon district, Assam, India), and meets the same at Kolongpar near Guwahati. The tributary is about long and flows through the districts of Nagaon, Morigaon and Kamrup; on the way, several smaller streams (Diju, Misa and others) meet it. The river flows through the heart of the Nagaon urban area dividing the town into Nagaon and Haiborgaon.