Atrai River/আত্রেয়ী নদী

Atrai River (also spelt as Atreyee) (Bengali: আত্রাই/আত্রেয়ী নদী) flows in West Bengal and northern parts of Bangladesh.

In ancient times the river was called Atreyee and finds a mention in the Mahabharata, one of the two Sanskrit epics of ancient India.. It is linked with Jorapani river, Fuleswari river,and Karatoya River. It originates in Siliguri ward no 40, near baikanthapur forest West Bengal and then after flowing through Dinajpur District of Bangladesh, it enters India again.It passes through Kumarganj and Balurghat community development blocks in Dakshin Dinajpur district. The river then renters Bangladesh. It splits into two rivers—the Gabura and the Kankra in Dinajpur district. It crosses the Barind Tract and flows into Chalan Beel. The river serves as a perennial source of fishing, even though it is often the cause of flooding in many areas during monsoons.

Total length of this river is approximately 240 miles (390 km). The maximum depth of the river is 99 feet (30 m).

Early History

The Atrai was formerly one of the greatest rivers of north Bengal for it was the main channel by which the waters of the Teesta discharged into the Ganges. In 1787, however, the Teesta broke away from its ancient bed and cut for itself a new and capacious channel by which it found its way into the Brahmaputra. Since then the Atrai has lost its importance and has now few traces of its former greatness.

It enters the district[clarification needed] from Rajshahi flowing through the Chalan Beel and falls into the Baral near the village of Nurnagar. Formerly, it used to pursue a course to the south and east after leaving the Chalan Beel till it fell into the Jamuna; but the middle portion of this old channel has been obliterated by the Baral and the Ichhamati, which, taking off from the Padma cut across the Atrai and overwhelmed it by copious deposit of silt.

The southern portion of the river in this district can still be traced from its junction with the Ichhamati at Boalmari; it then flows through Dulai and Bera thana and falls into the Padma near Ratanganj. This river presents one of the most striking instances of riverine changes in the district of Pabna.

Tangon River (also known as Tongon River) (Bengali: টাংগন নদী) is a river passing through the Indian state of West Bengal and Bangladesh. It is tributary of Punarbhaba River. It was named after Tankonath, zamindar of Ranisankail in Thakurgaon District. After originating in West Bengal, it passes through Panchagarh District, Sadar Upazilla in Thakurgaon District, Pirganj in Thakurgaon District, Bochaganj and Biral in Dinajpur District in Bangladesh before it flows through Kushmandi and Bansihari community development blocks of Dakshin Dinajpur district in West Bengal.There is also a dam constructed on tangan river near boda town, 26’11’32″N 88’28’02” E. It re-enters Bangladesh and meets Punarbhava River near Rohanpur in Naogaon District.
In 1989, a barrage was built across the river 10 kilometres (6 mi) west of Boda in Panchagarh District.
Jamuna River
The Jamuna River (Bengali: যমুনা Jomuna) is one of the three main rivers of Bangladesh. It is the lower stream of the Brahmaputra River, which originates in Tibet as Yarlung Tsangpo, before flowing into India and then southwest into Bangladesh. The Jamuna flows south and joins the Padma River (Pôdda), near Goalundo Ghat, before meeting the Meghna River near Chandpur. It then flows into the Bay of Bengal as the Meghna River. The Brahmaputra-Jamuna is a classic example of a braided river and is highly susceptible to channel migration and avulsion. It is characterised by a network of interlacing channels with numerous sandbars enclosed between them. The sandbars, known in Bengali as chars, do not occupy a permanent position. The river deposits them in one year, very often to be destroyed later, and redeposits them in the next rainy season. The process of bank and deposit erosion together with redeposition has been going on continuously,making it difficult to precisely demarcate the boundary between the district of Pabna on one side and the districts of Mymensingh, Tangail and Dhaka on the other. The breaking of a char or the emergence of a new one is also a cause of much violence and litigation. The confluence of the Jamuna River and Padma River is unusually unstable and has been shown to have migrated southeast by over fourteen kilometres between 1972 and 2014.
A view of Jamuna River from Jamuna Bridge In Bangladesh, the Brahmaputra is joined by the Teesta River (or Tista), one of its largest tributaries. The Teesta earlier ran due south from Jalpaiguri in three channels, namely, the Karatoya to the east, the Punarbhaba in the west and the Atrai in the centre. The three channels possibly gave the name to the river as Trisrota “possessed of three streams” which has been shortened and corrupted to Teesta. Of these three, the Punarbhaba joined the Mahananda. The Atrai passing through a vast marshy area known as Chalan Beel joined the Karatoya and the united stream joined the Padma (Ganges) near Jafarganj. In the destructive floods of 1787, the Teesta river forsook its old channel and rushing south-east it joined the Brahmaputra. James Rennell made a survey between 1764 and 1777 and his maps are one of the earliest authentic maps of Bengal in existence. In these maps Teesta is shown as flowing through North Bengal in several branches — Punarbhaba, Atrai, Karatoya, etc. All these streams combined lower down with the Mahananda, now the westernmost river in North Bengal, and taking the name of Hoorsagar finally discharged into the Ganges at Jafarganj, near modern Goalundo. The Hoorsagar river is still in existence, being the combined outfall of the Baral, a spill channel of the Ganges, the Atrai, the Jamuna or Jamuneswari (not the main Jamuna through which the Brahmaputra now flows), and the Karatoya, but instead of falling into the Ganges, it falls into the main Jamuna, a few kilometres above its confluence with the Padma at Goalundo. James Rennell’s 1776 map shows the Brahmaputra’s main flow through Jamalpur and Mymensingh and a much narrower Jamuna or Jamuneswari before an earthquake in 1762, and the Teesta R. flowing in 3 channels to the Ganges before a flood in 1787. Below the Teesta, the Brahmaputra splits into two distributary branches. The western branch, which contains the majority of the river’s flow, continues due south as the Jamuna (Jomuna) to merge with the lower Ganges, called the Padma River (Pôdda). The eastern branch, formerly the larger but now much smaller, is called the lower or Old Brahmaputra (Bromhoputro). It curves southeast to join the Meghna River near Dhaka. The Padma and Meghna converge near Chandpur and flow out into the Bay of Bengal. This final part of the river is called Meghna. In the past the course of the lower Brahmaputra was different and passed through the Jamalpur and Mymensingh districts. In a major[6] magnitude earthquake on April 2, 1762, the main channel of the Brahmaputra at Bhahadurabad point was switched southwards and opened as Jamuna due to the result of tectonic uplift of the Madhupur tract.[7] The Jamuna is a very wide river. During the rains it is about 8–13 km (5–8 mi) from bank to bank. Even during the dry season when the waters subside, the breadth is hardly less than 3–5 km (2–3 mi). The Jamuna was a barrier in establishing a direct road link between capital Dhaka and northern part of Bangladesh, better known as Rajshahi Division, until 1996. This was mitigated by the completion of the Jamuna Multi-purpose Bridge.[8] It is also a very important waterway. It is navigable all year round by large cargo and passenger steamers. Before the Partition of Bengal in 1947, passenger steamers used to ply up to Dibrugarh in the state of Assam in the Indian Union. At present two steamer ferry services link the district of Pabna with the districts of Mymensingh, Tangail and Dhaka. The Bangladesh Railway maintains a ferry service between Serajganj in Pabna and Jagannathganj in Mymensingh. The other ferry service between Nagarbari in Pabna and Aricha in Dhaka is run by the C & B Department.