Anti-erosion Schemes

Anti-erosion Measures Completed

Brahmaputra Board has successfully completed the following anti-erosion measures in Assam, Nagaland and Meghalaya-

  1. Protection of Nagrijuli, Rangia Town, Mukalmua and Barbhag area from floods and erosion of river Puthimari
  2. Protection of Kusiabil, Durgajan, Nagarjan under Phase – I  at Dimapur from erosion of Dhansiri (south)
  3. Protection of Mao Colony, Kuki village & Assam Rifles Transit camp area under Phase - II  at Dimapur from erosion of Dhansiri (south)
  4. Protection of Maslabari International Border area of Dhubri District from erosion of river Brahmaputra

Implementation of Anti-erosion Measures underway -

Protection of Majuli from floods and erosion

Majuli is the largest inhabited River Island in the world. It is situated between latitudes 26º45’N and 27º10’N, and longitudes between 93º40’E and 94º35’E. Majuli has been the cultural capital and the cradle of Assamese civilization since the 16th century. Sankardeva, a pioneer of the medieval-age neo-vaishnavite movement, preached a monotheist form of Hinduism called as Vaishnavism and established monasteries and hermitages known as 'Satra'. The satras preserve antiques like weapons, utensils, jewellery and other items of cultural significance. The inhabitants of Majuli are mostly tribals - predominantly from the Mishing, Deori and Sonowal Kacharis tribes. Majuli is also famous for pottery.

Emergency Measure at Bengena-Ati

Majuli Island has constantly been subjected to erosion by the mighty Brahmaputra. Responsibility for undertaking anti-erosion works for protection of Majuli Island was offered to Brahmaputra Board in the year 1999. Board took over the ground and started physical activities on the field in the year 2004.

The total area of the land mass of Majuli Main Island was 502.21 sq km in the year 2004. Since the year 2004, with regular implementation of ant-erosion / bank protection measures by Brahmaputra Board, the total area of Majuli Island has increased to 524.29 sq km till the year 2016. Currently, a new scheme "Protection of Majuli Island from flood and erosion of river Brahmaputra" funder by Ministry of DoNER under NLCPR is under execution..

Links for report on 'Protection of Majuli Island from Floods and Erosion' prepared by Brahmaputra Board and 'Work Plan' for the year 2018-19 are provided hereunder-


Protection of Majuli Island from Floods and Erosion
Work Plan for the Year 2018-19

Financial Implication

Expenditure incurred by Brahmaputra Board on undertaking measures for protection of Majuli Island from floods and erosion since January 2004 under various Phases is detailed below-

 

Sl. No.

Description

Estimated Cost
(Rs.in crore)

Actual Expenditure
(Rs. in crore)

Remarks

1

Immediate Measures
(Year 2004-2005)

6.22

6.09

Completed

2

Phase- I
(Years 2005-2011)

56.07

52.63

3

Emergent Measures (Year 2008)

4.99

4.75

4

Phase-II & Phase-III
(Started in 2009- completed in March 2018)

115.99

127.50

5

Works beyond the coverage of funding by DoNER

26.57

3.36

Works under progress

 Total

209.84

194.33

 

Outcome

The following are the major achievements

Year

Area of Majuli Island
(in sq km)

Net Area reclaimed
(in sq km)

2004

502.21

-

2008

506.37

4.16

2011

520.26

13.89

2013

522.73

2.47

2014

523.88

1.15

2016

524.29

0.41

Total land mass gained from 2004 to 2016

22.08

Works underway

A new scheme "Protection of Majuli Island from flood and erosion of river Brahmaputra" funded by Ministry of DoNER for Rs. 207 crore under NLCPR is under execution.

Avulsion of Brahmaputra at Dhola-Hatighuli (Restoration of rivers Dibang and Lohit to thier original courses)

Avulsion of left bank of River Lohit occurred at confluence of Lohit with Dibang - near Dhola-Hatighuli located in Dumdooma, Civil Sub-division of Tinsukia district in the year 1989 due to breach in Saikhowa Bund. Gradual widening of the channel with time was threatening to existence of more areas of Tinsukia and Dibrugarh Districts of Assam situated all along the newly developed channel. Initially, significant combined flow of Dibang and Lohit rivers started to flow through Anant Nala to Dangari – a tributary of river Dibru. Since the year 2000, the Balu Nala became dominant and almost entire diverted flow of Lohit and Dibang Rivers started passing through Balu Nala.

The scheme “Avulsion of Brahmaputra at Dhola-Hatighuli (Measures for diversion of River Dibang to its original course) with ancillary anti-erosion measures” prepared by Government of Assam was approved by Ministry of Water Resources, Government of India in the Technical Advisory Committee (TAC) meeting held in May, 2002 and the Brahmaputra Board was entrusted with the responsibility for execution of the scheme. Total expenditure of Rs 78.46 crore has so far been incurred by Brahmaputra Board on execution of works envisaged under Phase-I, Phase-II, Phase-III and Phase-IVcontemplated.

Cultivation after construction of Tie Bund

With construction of 'Tie-Bund', the lands earlier used to form part of main channel of Dibang River are now completed protected from floods and erosion. The inhabitants deserted areas have returned back and restarted cultivation in a big way.

11 villages under Doomduma Revenue Circle in an area of about 1500 ha got protection from floods, since the year 2004 onwards, on construction of retirement bund at Hatighuli area on Left bank of Lohit river.

Sl. No.

Description

Estimated Cost
(Rs.in crore)

Actual Expenditure
(Rs.in crore)

Status

1

Phase-I (January 2003 to July 2004)

10.47

8.87

Completed

2

Phase- II  (January 2004 to July 2004)

5.22

4.54

Completed

3

Phase-III(March 2007 to July 2007)

8.47

8.46

Completed

4

Phase-IV (2009-10 to 2015-16)

54.43

56.59

Completed

Total

78.59

78.46

 

A new scheme for conversion of the existing tie bund across the spill channel of river Dibang into a full-fledged embankment at Bahbari and construction of new embankment -Part-A of Phase - V for Restoration of rivers Dibang and Lohit to their original courses is under process of implementation.

Anti-erosion Schemes Planned to be executed during during 2018-19 to 2019-20