Dipor Bil, also spelt Deepor Beel, is located to the south-west of Guwahati city, in Kamrup Metropolitan district of Assam, India. It is a permanent freshwater lake, in a former channel of the Brahmaputra River, to the south of the main river. In 1989 4.1 km² of the area was declared as a wildlife sanctuary by the Government of Assam. It is also called a wetland under the Ramsar Convention which has listed the lake in November 2002, as a Ramsar Site for undertaking conservation measures on the basis of its biological and environmental importance.
Considered one of the largest beels in the Brahmaputra valley of Lower Assam, it is categorised as representative of the wetland type under the Burma monsoon forest biogeographic region.
The Dipor Bil is reported to provide, directly or indirectly, its natural resources for the livelihood of fourteen indigenous villages (1,200 families) located in its precincts. Freshwater fish is a vital protein and source of income for these communities; the health of these people is stated to be directly dependent on the health of this wetland ecosystem. A member of Deepor Beel Fishermen’s Cooperative Society has succinctly stated: “Our forefathers protected this wetland and we are committed to do the same as we depend on the wetland for our livelihood. We will protect this wetland at any cost and against any odds”.