Raimangal River is a tidal estuarine river in and around the Sundarbans

Sundarbans

The Sundarbans [Sundarban Tour Booking-9051115228] is the largest single block of tidal halophytic mangrove forest in the world.The name Sundarban can be literally translated as "beautiful jungle" or "beautiful forest" in the Bengali language...

 in North 24 Parganas district

North 24 Parganas district

North 24 Parganas district is a district in southern West Bengal, of eastern India. North 24 Parganas extends in the [tropical zone] from latitude 22º11'6" north to 23º15'2" north and from longitude 88º20' east to 89º5' east...

 in the India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

n state

States and territories of India

India is a federal union of states comprising twenty-eight states and seven union territories. The states and territories are further subdivided into districts and so on.-List of states and territories:...

 of West Bengal

West Bengal

West Bengal is a state in the eastern region of India and is the nation's fourth-most populous. It is also the seventh-most populous sub-national entity in the world, with over 91 million inhabitants. A major agricultural producer, West Bengal is the sixth-largest contributor to India's GDP...

 and Satkhira District

Satkhira District

The district of Satkhira consists 3296 mosques, 1305 temples, 59 churches, 35 Buddhist temples, 8 tombs and 45 shrines.-Subdivisions:Satkhira subdivision was established in 1861 under Jessore district. It was included into Khulna district in 1882. The subdivision was upgraded into a district in...

 in Bangladesh

Bangladesh

Bangladesh , officially the People's Republic of Bangladesh is a sovereign state located in South Asia. It is bordered by India on all sides except for a small border with Burma to the far southeast and by the Bay of Bengal to the south...

.

The Ichamati

Ichamati River

Ichamati River , is a trans-boundary river which flows through India and Bangladesh and also forms the boundary between the two countries. The river is facing the problem of siltation leading to thin flow of water in the dry season and floods in the rainy season...

 breaks up into several distributaries below Hingalganj

Hingalganj

Hingalganj is an administrative division in Basirhat subdivision of North 24 Parganas district in the Indian state of West Bengal. Hingalganj police station serves this block...

 the chief of which are the Raimangal, Bidya

Bidyadhari River

Bidyadhari River , is a river in the Indian state of West Bengal. It originates near Haringhata in Nadia district and then flows through Deganga, Habra and Barasat areas of North 24 Parganas before joining the Raimangal River in the Sundarbans.The river has formed a major navigation route for...

, Jhilla, Kalindi

Kalindi River

Kalindi River is a tidal estuarine river in and around the Sundarbans in North 24 Parganas district in the Indian state of West Bengal, bordering on Satkhira District of Bangladesh....

and Jamuna. These fan out into wide estuaries in the Sundarbans.It forms the international boundary between India and Bangladesh for some distance.