A beel ( Bengali and

Assamese Assamese may refer to: * Assamese people, a socio-ethnolinguistic identity of north-eastern India * People of Assam, multi-ethnic, multi-linguistic and multi-religious people of Assam * Assamese language, one of the easternmost Indo-Aryan language ...

: বিল) is a billabong or a lake-like wetland with static water (as opposed to moving water in rivers and canals - typically called in Bengali, in the Ganges - Brahmaputra flood plains of the Eastern Indian states of West Bengal, and Assam and in the country of Bangladesh. The term owes its origins to the word of the same pronunciation meaning "pond" and "lake" in the Bengali and

languages.

Formation

Typically, beels are formed by inundation of low-lying lands during flooding, where some water gets trapped even after flood waters recede back from the

flood plain A floodplain or flood plain or bottomlands is an area of land adjacent to a river which stretches from the banks of its channel to the base of the enclosing valley walls, and which experiences flooding during periods of high discharge.Goudi ...

s. Beels may also be caused by filling up of low-lying areas during rains, especially during the monsoon season. There are different causes for the formation of beels. A string of beels is indicative of there being the remains of a great river that deserted its channel, moving to a new one elsewhere.

Haor, baor

In north eastern Bangladesh there are large water bodies called haors. A haor is a bowl shaped depression which is flooded every year during monsoon. Throughout the rainy season a haor is such a vast stretch of turbulent water that it is thought of as a sea, within which the villages appear as islands. It remains under water for seven months of the year. During the dry season water drains out leaving small shallow lakes exposing rich soil extensively cultivated for rice. In greater Comilla, Faridpur, Dhaka and Pabna districts the beel is sometimes referred to as baor.

Location of important beels

Bangladesh

Bangladesh has thousands of beels, with the best-known being Chalan Beel, Gopalganj-Khulna Beel, Meda Beel, Aila beel, Dekhar beel, Kuri beel, Erali beel and Arial Beel.Abdul Wahab Akonda
BANGLADESH
, International Water Management Institute; ''Retrieved: 2007-12-04'' In the central part Bangladesh, important beels are Katla, Chatal, Nagarkanda, and Chanda. Most of the large beels have shrunk a great deal in recent decades. Regionwise, in the northwest of Bangladesh some of the larger beels are Bara Beel in Pirganj, Tagrai Beel in

Kurigram Kurigram District ( bn, কুড়িগ্রাম) is a district of Bangladesh in the Rangpur Division. The district is located in northern Bangladesh along the country's border with India. Under Indian rule, the area was organized as a mahakum ...

, Lunipukur in Rangpur, Bara Mirzapur Beel in Narail and Keshpathar in Bogra. The old river course of Atrai has beels. In the southern region of Bangladesh, important beels are Boyra, Dakatia, Bara, Kola, Patla, Chatal and Srirampur.

Assam

In Assam, Deepor Beel is a permanent, freshwater lake, in a former channel of the Brahmaputra river, to the south of the main river south-west of Guwahati. It has great biological and environmental importance besides being the only major storm water storage basin for the Guwahati city. The beel is endowed with rich floral and faunal diversity. In addition to huge congregation of residential water birds, the Deepor ecosystem harbours large number of migratory waterfowl each year. Deepor Beel has been designated as a Ramsar site in November 2002.

References

''Birding opportunities at Deepor Beel''
{{pond Lakes Depressions (geology) Geography of India Ponds Wetlands of Bangladesh