The Upper Assam Investigation W.R. Division, Jorhat is comprised of one working Sub-Division viz. Kakilamukh Protection Works Sub-Division, Jorhat and three Investigation Sub-divisions viz. Dibrugarh Investigation W.R. Sub-Division, Dibrugarh, Jorhat Investigation W.R. Sub-Division, Jorhat and Silghat Investigation W.R. Sub-division, Silghat.

The major river under its jurisdiction is river Brahmaputra flowing through the North Western boundary of Jorhat District.

A present the Upper Assam Investigation W.R. Division has 52.96 Km of embankments in Jorhat District. These embankments were originally constructed in between 1951 to 1975. Construction of these embankments have given reasonable flood protection to about 29,100 Ha. of highly flood prone area in the district.

Embankment System under Upper Assam Investigation W.R. Division, Jorhat

Sl No. Name of Embankment Length
1 Brahmaputra Dyke from Jhanjimukh to Neamati Ph.-II 3.15 Km
2 Brahmaputra Dyke from Rongdoi to Neamati 7.87 Km
3 Brahmaputra Dyke from Neamati P.W.D Road to Gohaingaon (Bor-Ali) 4.14 Km
4 Link approach to Kakilamukh Spur No.-I (Commissioner Road to Gohaingaon Embankment). 1.60 Km
5 Brahmaputra Dyke from Gohaingaon to Nahatia 7.10 Km
6 Brahmaputra Dyke from Nahatia to Khutiaputa Tie Bund (Malow Bund) 1.10 Km
7 Brahmaputra Dyke from Malow Bund to Khutiaputa Check Bund (Khutiaputa Tie Bund) 2.85 Km
8 Brahmaputra Dyke from Khutiaputa Check Bund to N.R Dyke Ph-I 8.23 Km
9 Brahmaputra Dyke from Khutiaputa Check Bund to N.R Dyke Ph-II 10.455 Km
10 B/Dyke from Bohikhowa Check bund to N/R dyke including Bohikhowa check bund. 1.86 Km
11 B/Dyke from Gohaingaon to Charigaon. (Railway Dowel). 4.60 Km
Total Length 52.95Km

1. Name of the Scheme:-    Protection of Dainigaon and its adjoining areas (Hatisal- Neamati) against the erosion of river Brahmaputra. (Funded under ACA/EFC/ State Plan/FMP)

i) Estimate Amount:- Rs.3177.00 Lakh (Original)
Rs.3456.27 Lakh (Recast)

ii) Area Benefited:- 10,800 Hectors

iii) Reference of A.A.:- No.FC(C)/37 /96/14 Dtd.14-08-96

iv) Reference of T.S.:- No. ACE/FC/WJ-83/94/55 Dtd.29-11-1996

v) Work Component:-

a) R/S to B/Dyke from Jhanjimukh to Neamati Ph-II (Length = 3.14 Km)
b) 3 Nos of Land Spur & 2 Nos. of Bull Head

vi) Date of Starting:- February - 1996
Date of Completion:- May - 2006.

vii) Financial Progress:- Rs.3222.68 Lakh

2. Name of the Scheme:-    R/S to Brahmaputra Dyke from Gohaingaon to Nahatia Phase-I(Ch. 0 m to 3500 M). (Funded under FMP)

i) Estimate Amount::- Rs.250.57 Lakh

ii) Area Benefited:- 10,800 Hectors

iii) Reference of A.A.:- No.WR(C)/377 /2006/6 Dtd.04-06-2007

iv) Reference of T.S.:- No. ACE/WR/ WJ-142/06/5 Dtd. 07-01-2008

v)Work Component:- R/S to B/Dyke for Length of 3500.00 M

vi) Date of Starting:- December - 1996
Date of Completion:- December - 2007.

vii) Financial Progress:- Rs.213.80 Lakh

3. Name of the Scheme:-    R/S to B/Dyke from Khutiaputa check bund to N/R Dyke Phase-II (Funded under State Plan)

i) Estimate Amount::- Rs.335.57 Lakh

ii) Area Benefited:- 10,800 Hectors

iii) Reference of A.A.:- No. FC(C) 33/98 /8 Dtd. 06-03-1999

iv) Reference of T.S.:- No.ACE/FC/WJ-78/91/16 Dtd.09-04-1999

v)Work Component:- R/S to B/Dyke for Length of 10.455 km

vi) Date of Starting:- March - 1999
Date of Completion:- March - 2001

vii) Financial Progress:- Rs.309.01 Lakh

4. Name of the Scheme:-    Raising & strengthening of B/dyke from Neamati P.W.D. road to Gohaingaon (Borali) (Funded under ACA)

i) Estimate Amount::- Rs.216.20 Lakh

ii) Area Benefited:- 5843 Hectors

iii) Reference of A.A.:- No.FC(C)256/97/57 Dtd. 28-01-1998

iv) Reference of T.S.:- No. ACE/FC/WJ-88/96/31 Dtd. 26-03-1998.

v)Work Component:- R/S to B/Dyke for Length of 4140.00 M

vi) Date of Starting:- 1998
Date of Completion:- 1999

vii) Financial Progress:- Rs.216.20 Lakh

5. Name of the Scheme:-    Protection of Kalbari and its adjoining areas including Dergaon Town from the erosion of river Brahmaputra. (under FMP)

i) Estimate Amount::- Rs.745.00 Lakh

ii) Area Benefited:- 10,800 Hectors

iii) Reference of A.A.:- No.WR(C)5/2008/4 Dtd.03-10-2008

iv) Reference of T.S.:- No. ACA/WR/WJ-154/09/10 Dtd.28-07-2009

v)Work Component:- a) Boulder works in apron.
b) Back berm of Brahmaputra Dyke from Ch.4100 M to Ch.8100 M at N.R. Dyke Ph-I.
c) Porcupine screens both Upstream and Downstream of the spur.

vi) Design of Spur:- a) Size of Apron = 37.50 m x 1.35m
b) Thickness of pitching 0.90 m in crates.

vii) Date of Starting:- September - 2008
Date of Completion:- March - 2010.

viii)Financial Progress:- Rs.739.48 Lakh

6. Name of the Scheme:-    A/E measures against the erosion of river Brahmaputra at Gohaingaon to Charigaon including R/S of existing Railway Dowel. (Funded under NABARD RIDF-XII)

i) Estimate Amount::- Rs.632.54 Lakh

ii) Area Benefited:- 10,800 Hectors

iii) Reference of A.A.:- No.WR(C) 48/2007/4 Dtd. 27-06-07

iv) Reference of T.S.:- No. ACE/WR/WJ-138/06/6 Dtd. 07-01-08.

v)Work Component:- R/S to B/Dyke for Length of 4600.00 M

vi) Date of Starting:- February - 2007
Date of Completion:- December - 2009

vii) Financial Progress:-Rs.631.05 Lakh

7. Name of the Scheme:-    Anti erosion measures against the erosion of river Brahmaputra in between existing Kakilamukh Spur No.III & IV near Assam Bongiya Saraswata Math.(under ACA)

i) Estimate Amount::- Rs.426.55 Lakh

ii) Area Benefited:- 3400 Hectorss

iii) Reference of A.A.:- No.WR(C)286/2008/11 Dtd.20-01-2009

iv) Reference of T.S.:- No. ACA/WR/WJ-152/09/2 Dtd.03-03-2009

v)Work Component:- a) Boulder revetment with C.C. block pitching for a length of 250 M.
b) Porcupine screen in the Upstream

vi) Design of Apron:- a) Size of Apron = 27.00m x 1.35m
b) C.C. block in pitching work.
c) PSC porcupine in the upstream of the revetment

vii) Date of Starting:- February - 2009
Date of Completion:- June - 2010.

vii) Financial Progress:-Rs.426.55 Lakh

8. Name of the Scheme:-    Raising and Strengthening of Brahmaputra Dyke from Gohaingaon to Nahatia Ph-II (Ch.0.0M to 3500M) (Funded under ACA)

i) Estimate Amount::- Rs.295.26 Lakh

ii) Area Benefited:- 5800 Hectors

iii) Reference of A.A.:- No.WR(C)28/2008/11 Dtd.29-01-2009

iv) Reference of T.S.:- No. ACA/WR/WJ-126/02/4 Dtd.07-03-2009

v)Work Component:- a) Earthwork by Truck carriage.
b) Crest width = 7.50 m
c) Side slopes = 3:1 both side of the embankment.

vi) Date of Starting:- February 2009
Date of Completion:- June - 2010.

vii) Financial Progress:-Rs.295.26 Lakh

9. Name of the Scheme:-    Protection of Kokilamukh area against the erosion of the river Brahmaputra. (Strengthening of Spur No.-VII).(Funded under ACA)

i) Estimate Amount::- Rs.745.00 Lakh

ii) Area Benefited:- 4500 Hectors

iii) Reference of A.A.:- No.WR(C)143/2009/12 Dtd.10-09-2009

iv) Reference of T.S.:- No. ACA/WR/WJ-159/09/2 Dtd.12-01-2010

v)Work Component:- a) Boulder works in apron
b) Porcupine screen have been provided in the upstream of the spur..

vi) Design of Spur:- a) Size of Apron = 37.50m x 1.35m
b) Thickness of pitching 0.90 m in cages.

vi) Date of Starting:- July - 2009
Date of Completion:- June - 2010.

vii) Financial Progress:-739.48 Lakh

10. Name of the Scheme:-    Anti erosion measures against the erosion of river Brahmaputra at NAM DEORI area (Strengthening of Khutiapota Check Bund). (under ACA)

i) Estimate Amount::- Rs.744.65 Lakh

ii) Area Benefited:- 10,800 Hectors

iii) Reference of A.A.:- No.WR(C)33/201/9 Dtd.20-03-2010

iv) Reference of T.S.:- No. WR(ED)/6057/10/6 Dtd.30-03-2010

v)Work Component:- a) Boulder works in the spur.
b) Porcupine screens at both upstream and downstream of the spur.

vi) Design of Spur:- a) Size of Apron = 39.00 m x 1.35m
b) Thickness of pitching 0.90 m in cages.

vi) Date of Starting:- April - 2010
Date of Completion:- April - 2011

vii) Financial Progress:-Rs.744.65 Lakh

11. Name of the Scheme:-    Anti erosion measures against the erosion of river Brahmaputra at MAYAMORA THAN in between existing spur no.V & VI near Nahatia (Funded under ACA)

i) Estimate Amount::- Rs.420.00 Lakh

ii) Area Benefited:- 3400 Hectors

iii) Reference of A.A.:- No.WR(C)175/2010/8 Dtd.20-10-2011

iv) Reference of T.S.:- No. WR(ED)/Tech/607/10/7 Dtd.18-2-2012

v)Work Component:- a) Boulder works in apron.
b) R.C.C. porcupine screen have been provided at D/S of Spur No.V and porcupine bar at D/S of boulder revetment work

vi) Design of Spur:- a) Size of Apron = 27.00 m x 1.35m
b) Thickness of pitching 0.60 m in crates
c) Toe Key is provided with boulder in crates of Size 3.00m x 0.90m

vi) Date of Starting:- January 2012
Date of Completion:- October 2012.

vii) Financial Progress:-Rs.383.39 Lakh

12. Name of the Scheme:-    Immediate measures to avert a huge devastation in Neamatighat area for the year 2011-12. (Funded under SDRF)

i) Estimate Amount::- Rs.464.70 Lakh

ii) Revenue Sanction:- No.RGR.202/2011/5 Dtd.31-3-2012

iii) Reference of T.S.:- No.WR(EDRT)188/2009-10/FDR/UAID/23 Dtd.5-7-2012

iv)Work Component:- a) Restoration of the damaged apron of Bull Head No.2 with boulder in cages.
b) Apron and boulder revetment for a length of 75.00 m

v) Physical Progress:- 100%

vi) Financial Progress:- Nil

13. Name of the Scheme:-    FDR to Brahmaputra dyke of L/B for Ch.0.00m to 4.14 Km at Neamatighat for the year 2011-12. (Funded under SDRF)

i) Estimate Amount::- Rs.306.12 Lakh

ii) Revenue Sanction:- RGR/438/2012/18 Dtd.07-11-2012

iii) Reference of T.S.:- No.WR(EDRT)188/2009-10/FDR/UAID/36 Dtd.15-06-2013

iv)Work Component:- Launching porcupine screens.

v) Physical Progress:- 100%

vi) Financial Progress:- Nil