Narmada Main Canal
 Narmada Main Canal is a contour canal. It is the biggest lined irrigation canal in the world. It is about 458 km. long up to Gujarat -Rajasthan border. It has a capacity to flow 1133 cumecs (40000 cusecs) at its head-at kevadia and reducing to 71 cumecs (2500 cusecs) at the Gujarat -Rajasthan border. The canal extends further in the state of Rajasthan to irrigate areas in Barmer and Jhalore districts of Rajasthan. The cross section of the canal, at its head is 73.1m x 7.6m (Bed width x Full supply depth), with 2:1 inner side slope. It has a velocity of water in the initial reach is 1.69 m/sec.

The Main Canal is lined with plain cement concrete to minimise sippage 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 598 Structures on the Narmada Main canal. Out of this 236 structures are cross drainage structures, comprising of 5 Aqueducts, 15 canal syphons, 182 drainage syphons, 33 canal crossing and one super passage.

There are 89 Regulating structures comprising of 1 Main HR, 44 Branch HR, 32 Cross Regulators and 12 Escapes. There are total 274 nos. of Road Bridge including national Highway, State Highway, MDRB, ODRB, VRB, and UVRB etc. (A statement showing the structures in different reach is kept at Annex-I) Narmada Main Canal as on today is almost completed up to 458 km. and water has flown through it and has reached the state of Rajasthan.
Statement showing total number of structures on Narmada Main Canal are as under
Reach in Km.Total No. of structuresAqueductsCanal SyphonDrainage SyphonCanal crossing + Super PassageHead RegulatorCross RegulatorEscapeBridges
0 to 144.51935166181613371
144.5 to 263.265154---7
34

8+1

12

10

6

76
263.265 to 356.422134
---

5

46

5

10

8

2

63
356.422 to 388.164
37

---

1

11

---

2

2

1

20
388.164 to 458.318
80

---

1

25

1

5

4

--

44
Grand Total
598

5

15

182

33

45
3212274
Branch Canals
Sr. No.Name of CanalChainage of NMC (km)Sr. No. Name of Canal Chainage of NMC (km) Sr. No.Name of CanalChainage of NMC (km)
1Wadia

9.931

14 Nahra

111.645

27 Kharaghoda

292.398

2Tilakwada

17.871

15 Desar

126.645

28 Zinzuwada

301.041

3Mandwa

25.263

16 Sanali

171.961

29 Bolera

326.389

4Bhilodia

32.694

17 Mehmdabad

187.074

30 Rajpura

344.772

5Timbi

38.523

18 Ghodasar

202.368

31 Amarapura

354.000

6Sankheda

45.109

19 Vehlal

212.546

32 Radhanpur

374.486

7Miyagam

62.916

20 Daskroi

223.667

33 Kachchh

385.814

8Gojali

70.236

21 Dholka

246.286

34 Vejpur

405.722

9Vadodara

81.834

22 Sanand

258.632

35 Madka

417.792

10Dena

88.770

23 Saurashtra

263.200

36 Malsan

423.732

11Dumad

100.026

24 Viramgam-I

267.063

37 Dhima

438.552

12Sakarda

102.953

25 Viramgam-II

277.166

38 Godasisar

453.837

13Zumkha

106.905

26 Goriya

290.605

.Canal System- more details
.Saurastra Branch Canal
.Kachchh Branch Canal
.Canal Design
.Map of Main and Branch Canals