The State of Assam produced from valleys particularly the Brahmaputra and Barak Valley. The flood inclined region of the kingdom is 31,500.00 Sq Km as assessed with the aid of using the Rastriya Barh Ayog which is set 39.58 % of the entire land region of Assam. This is set 9.40% of overall flood inclined region of the complete u . s ..The flood inclined region of the u . s . as an entire stands at approximately 10.2 % of the entire region of the u . s ., however flood inclined region of Assam is 39.58 % of the region of the kingdom.It means that the flood inclined region of Assam is 4 instances the country wide mark of the flood inclined region of the u . s ..The severity of flood hassle of the kingdom has been similarly annoyed with the aid of using the acuteness of abrasion on each banks of river Brahmaputra and its tributaries.Study well-knownshows that a place of 4.27 Lakh Hectare of the kingdom has been eroded with the aid of using the rivers on account that 1950, that’s 7.40 % of region of the kingdom.The common annual charge of abrasion is 8000.00 Ha. The international`s biggest river island Majuli is likewise below the grip of abrasion with the aid of using river Brahmaputra and approximately 60 % of its unique region has already been engulfed with the aid of using the river.
The Brahmaputra Valley has a mean width of approximately eighty Km. The predominant river of the valley, Brahmaputra is one in every of the most important rivers withinside the international and rank 5th with appreciate to its common discharge.The river originates from the Kailalsh levels of Himalayas at an elevation of 5300 M. After flowing thru Tibet it enters India thru Arunachal Pradesh and flows thru Assam and Bangladesh earlier than it joins Bay of Bengal.The catchments region of Brahmaputra in Tibet is 2,93,000 Sq. Km; in India and Bhutan is 2,40,000 Sq. Km and in Bangladesh is 47,000 Sq. Km.The Brahmaputra basin extends over a place of 5,eighty,000 Sq. Km as much as its confluence inside Bangladesh. The common width of Brahmaputra is 5.forty six Km. The most discharge of Brahmaputra at Pandu close to Guwahati changed into recorded as 72,779 cumec on 23.08.sixty two and minimal discharge changed into recorded as 1757 cumec on 22.02.63.The common annual discharge is set 20,000 cumec and common dry season discharge is 4,420 cumec.The river slope may be very steep until it enters India. A drop of approximately 4800 M is accomplished in a duration at approximately 1700 Km in China (Tibet).This common slope of approximately 2.eighty two m/Km receives decreased to approximately 0.1m/Km in Assam valley. Due to this unexpected pulling down of river slope, the river will become braided in nature withinside the Assam valley.During its path in Assam valley from Kobo to Dhubri the river is joined with the aid of using approximately 20 (twenty) vital tributaries on its North financial institution and 13 (thirteen) on its South financial institution.
The Brahmaputra Valley has a mean width of approximately eighty Km. The fundamental river of the valley, Brahmaputra is one in all the biggest rivers withinside the international and rank 5th with recognize to its common discharge.The river originates from the Kailalsh tiers of Himalayas at an elevation of 5300 M. After flowing thru Tibet it enters India thru Arunachal Pradesh and flows thru Assam and Bangladesh earlier than it joins Bay of Bengal.The catchments vicinity of Brahmaputra in Tibet is 2,93,000 Sq. Km; in India and Bhutan is 2,40,000 Sq. Km and in Bangladesh is 47,000 Sq. Km.The Brahmaputra basin extends over a place of 5,eighty,000 Sq. Km as much as its confluence inside Bangladesh. The common width of Brahmaputra is 5.forty six Km. The most discharge of Brahmaputra at Pandu close to Guwahati become recorded as 72,779 cumec on 23.08.sixty two and minimal discharge become recorded as 1757 cumec on 22.02.63.The common annual discharge is set 20,000 cumec and common dry season discharge is 4,420 cumec.The river slope could be very steep until it enters India. A drop of approximately 4800 M is finished in a duration at approximately 1700 Km in China (Tibet).This common slope of approximately 2.eighty two m/Km receives decreased to approximately 0.1m/Km in Assam valley. Due to this surprising pulling down of river slope, the river turns into braided in nature withinside the Assam valley.During its route in Assam valley from Kobo to Dhubri the river is joined through approximately 20 (twenty) critical tributaries on its North financial institution and 13 (thirteen) on its South financial institution.Joining of those tributaries bringing excessive sediment load turns on braiding.Brahmaputra sub-basin extends over a place of 580,000 sq.km mendacity in Tibet (China), Bhutan, India and Bangladesh. The drainage vicinity mendacity in India is 194413 sq.km which is almost 5.9% of the whole geographical vicinity of the country. It is bounded at the north through the Himalayas, at the east through the Patkari variety of hills jogging alongside the Assam-Burma border, at the south through the Assam variety of hills and at the west through the Himalayas and the ridge .isolating it from Ganga sub-basin.The sub-basin lies withinside the States of Arunachal Pradesh, Assam, Nagaland, Meghalaya, West Bengal and Sikkim.All the tributaries of the valley vicinity are rain fed and foam up with rain. The precipitation right here is specifically because of South West monsoon.Heavy precipitation happens right here from May to September. All its tributaries enjoy wide variety of flood waves as in line with rainfall in respective catchments.If the flood of the tributaries coincides with the flood of Brahmaputra, it reasons extreme hassle and devastation.The tributaries specifically Subansiri, Ronganadi, Dikrong, Buroi, Borgong, Jiabharali, Dhansiri (North) Puthimari, Manas, Beki, Aie, Sonkosh are the primary tributaries at the North even as the Noadehing, Buridehing, Desang, Dikhow, Bhogdoi, Dhansiri (South), Kopilli, Kulsi, Krishnai, Dhdhnoi, Jinjiran are the primary tributaries at the south financial institution of the river Brahmaputra. The traits of the north financial institution tributaries are extraordinary than that of the south financial institution tributaries,
Teesta River is lifeline of Sikkim and makes a border among Sikkim and West Bengal earlier than becoming a member of the Brahmaputra as a tributary in Bangladesh. The general period of the river is 315 kilometres.Manas River : Manas River folows in India and Bhutan and is the most important river device of Bhutan. Three different river structures of Bhutan are Amo Chu or Torsa, Wong Chu or Raidak, Mo Chu or Sankosh. It is met with the aid of using 3 different primary streams earlier than it once more debouches into India in western Assam.Subansiri river : The Subansiri River is a tributary of the Brahmaputra River withinside the Indian states of Assam and Arunachal Pradesh, and the Tibet Autonomous Region of China. The Subansiri is 442 kilometres (275 mi) long, with a drainage basin 32,640 rectangular kilometres (12,six hundred squaremi) large. The Subansiri is the most important tributary of the Brahmaputra.Dhansiri river : Dhansiri is the primary river of Golaghat District of Assam and the Dimapur District of Nagaland. It originates from Laisang
top of Nagaland. It flows thru a distance of 352 kilometres (219 mi) from south to north earlier than becoming a member of the Brahmaputra on its south
financial institution. Its general catchment vicinity is 1,220 rectangular kilometres (470 squaremi).
The Barak River is one of the primary rivers of South Assam and is part of the Surma-Meghna River System.It rises withinside the hill u . s . a . of Manipur State, wherein it’s far the largest and the maximum vital of the hill u . s . a . rivers.After Manipur it flows thru Mizoram State and into Assam, finishing simply after it enters Bangladesh wherein the Surma and Kushiyara rivers begin.In Assam, the Barak has a complete period of 225 km and it drains the southern a part of the country which incorporates the districts of Cachar, Karimganj, Hailakandi
and the southern a part of the Noprth Cachar Hills.The valley has a width of 25-30 km and it covers a place of 6962 sq. km accounting for approximately 9% of the overall geographical vicinity of the country.The plain, normally called Cachar Plain is a narrow, and slopes lightly to the west.Through the plain, the river flows sluggishly for a distance of a hundred twenty five km and reveals a noticeably meandering pattern.The vital north financial institution tributaries of Barak river are Jiri, Siri, Madhura, Jatinga and Larang, at the same time as the vital south financial institution tributaries consist of Sonai, Ghagra, katakhal, Dhaleswari, Singla and Longai.The Barak valley has a geographical vicinity of 6922.00 Sq. Km apart from 2(two) hill districts.The nearby rainfall run off of the valley along side that of adjoining hilly regions flows thru river Barak and its diverse tributaries and is tired out to Bangladesh. The Katakhal, Jiri, Chiri, Modhura, Longai, Sonai, Rukni and Singla are the primary tributaries of the valley.The tributaries are particularly rain fed and purpose flood issues whilst precipitation occurs.The Barak sub-basin drains regions in India, Bangladesh and Burma.The drainage vicinity of the sut mendacity in India is 41723 squarekm which is sort of 1.38% of the overall geographical vicinity
How many rivers are there in Assam
Assam is a land of perennial and colourful rivers. With greater than a hundred twenty five prominent (major, medium, small) rivers flowing withinside the state, which make a contribution to both the Brahmaputra or the Barak, the density of rivers is so excessive that we will name it a riverine land.
Smallest river in Assam
Umananda is the smallest river in Assam
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