Jamuna River (Bangladesh)
The Jamuna river system with the Meghna Brahmaputra and Ganges
Jamuna ( Bengali: যমুনা, Jamuna ) is the name of the Brahmaputra main strand in Bangladesh and also the third to last of the many especially among different sections of the largest river run in Asia. The Jamuna has an average discharge of 20,100 m³ / s
Course
Shortly after the crossing of the Brahmaputra from the Indian state of Assam to Bangladesh, he is given the name Jamuna. After 245 kilometers flow path in a braided, of shifting sandbanks ( Chars ) interspersed riverbed of up to 14 kilometers wide ( at Sirajganj ) he unites with the right ( west ) incoming main branch of the Ganges (mean natural runoff: 11,400 m³ / s ) and bears from then on the name Padma.
Flow history
At two points, downstream at the beginning of the Jamuna and about 50 kilometers, smaller watercourses split off to the left, which unite to form the Old Brahmaputra. It marks an earlier course of the Brahmaputra, which went so far to the east, that he and the Ganges flowed almost separated from each other in the Bay of Bengal. This former situation is still reflected in the naming of the waters, even if the main streams have been very different today. This explains the name of equality of very different sections of the river as the Brahmaputra, Padma or Meghna, but also the names change in the course of the main river. Today Jamuna follows the Konai - Jenai watercourse, a former lower course of its flow paths widely varying Creek Tista. It crosses two flood vacant river terraces ( Barind and Madhupur plateau, partly remnants of alluvial fans ) that separate the lowlands of the Old Brahmaputra in the Northeast and the Ganges in the south west. The relocation of the Brahmaputra to the west, so on today's Jamuna for Padma out, is explained by tectonic uplift in the western Ganges Delta and the Old Brahmaputra, especially after an earthquake in 1782 and floods in 1787, during which the Tista its course shifted from the Ganges to be newly forming Jamuna.
Use
The Jamuna is an important shipping route despite the very variable current gutters, since the large current gutters are 5 feet deep on average. The wide river bed with current trays of 1-3 km wide, even at low tide, however, was a strong barrier to the movement between the capital Dhaka and Rajshahi Division of the Northern. In 1998, this connection was created with the 4.8 -kilometer-long Bangabandhu Bridge, the elftlängsten river bridge in the world, namely for combined road and rail traffic.
Name
The name Jamuna has become official after the founding of the state of Bangladesh. Jamuna or Yamuna is a female first name, which is used in India and Sri Lanka, as well as Singapore and Malaysia among Hindus.
The river is sometimes confused with the most important tributary of the Ganges in India, the Yamuna.