Chief Engineer (Main Canal),SSNNL,Gandhinagar
This office is currently in charge of Operation & Maintanance of Narmada Main Canal. Narmada Main Canal is offtaking from pond No. 4 of Sardar Sarovar Dam at Navagam near Ekta Nagar. Narmada Main Canal is a contour canal. It is the biggest lined irrigation canal in the world. It is about 458.318 km long up to Gujarat-Rajasthan border. The canal extends further in the state of Rajasthan to irrigate areas in Barmer and Jhalore districts of Rajasthan.The Main Canal is lined with plain cement concrete to minimise seepage losses to attain higher velocity and to control the water logging in future.The lining work is carried out with the mechanized pavers. Such a large scale paving of concrete lining is done for the first time in India.
The Main Canal in its journey has to negotiate several water streams, rivers, roads, railways etc.This is possible by constructing appropriate structure on the canal. In all, there are 630 structures of various types are constructed on the Narmada Main Canal. Narmada Main Canal is completed up to 458.318 km and water has been flowing throghout it right upto the state of Rajasthan.
The work of Operation & Maintanance of Narmada Main Canal ch. 0 to 458.318 km is alloted to below mentioned three division offices under the Superintending Engineer(O&M), SSNNL, Gandhinagar.
|
Sr.No.
|
Name of division
|
Reach of NMC in km.
|
|
1
|
Narmada Project Main Canal
Dn.No.1, Vadodara
|
Ch.0 to 144.500 km
|
|
2
|
Narmada Project Main Canal
Dn.No.2, Gandhinagar
|
Ch.144.500 to 293.501 km
|
|
3
|
Narmada Project Main Canal
Dn.No.3, Chanasma
|
Ch.293.501 to 458.318 km
|
Features of Narmada Main Canal:
1.Full supply level (F.S.L.) at H.R.:- 91.44 m (300 ft.)
2.Length up to Gujarat-Rajasthan border: - 458.318 km
3.Base width in head reach:- 73.10 km
4.Full supply depth (F.S.D.):- 7.60 m
5.Design discharge capacity
1. At head:-1133 cumecs (40,000 cusecs)
2. At Gujarat Rajasthan border:-74.55 cumecs (2600 cusecs)
6.Details showing the total No. of Structures on Narmada Main Canal are as under.
|
Sr. No.
|
Type of Structures
|
Nos. of Structures
|
|
0 to
144.500 km
|
144.500 to
293.501 km
|
293.501 to
458.318 km
|
Total
|
|
1
|
Aqueduct
|
5
|
0
|
0
|
|
|
2
|
Syphon Aqueduct
|
7
|
0
|
0
|
7
|
|
3
|
Drainage Syphon
|
59
|
52
|
65
|
176
|
|
4
|
Canal Crossing
|
17
|
8
|
0
|
25
|
|
5
|
Railway Crossing
|
5
|
8
|
3
|
16
|
|
6
|
Supper Passage
|
0
|
1
|
1
|
2
|
|
7
|
Head Regulator (HR)
|
21
|
26
|
26
|
73
|
|
8
|
Escape
|
4
|
8
|
3
|
15
|
|
9
|
Bridge
|
69
|
96
|
106
|
271
|
|
10
|
CR/Bridge
|
9
|
3
|
7
|
19
|
|
11
|
Cross Regulator (CR)
|
4
|
2
|
0
|
6
|
|
12
|
CR/Canal Syphon
|
0
|
7
|
6
|
13
|
|
13
|
Canal Syphon
|
1
|
0
|
1
|
2
|
|
|
Total
|
201
|
211
|
218
|
630
|
- Organisation Chart of C.E (Main Canal)
- Index Map of NMC
- Districtwise,Talukawise and village wise length of NMC NMC.
- Major structures on NMC.
- HR on NMC
- CR on NMC
- Escapes on NMC
- Control Cabin on NMC
- Line diagram of NMC Reach 0 to 458.318 km
- Photographs of CR/HR/ESCAPE/Aquedust/CSY and control cabin.
