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| Narmada Main Canal Sardar Sarovar Canal | |
|---|---|
 View of the Kutch Branch Canal of Narmada Main Canal paved with concrete lining, meandering through northwestern India. | |
| Location | |
| Country | India |
| State | Gujarat,Rajasthan |
| Physical characteristics | |
| Source | Sardar Sarovar Dam |
| • location | Kevadia,Narmada district,Gujarat,India |
| • coordinates | 21°49′49″N73°44′50″E / 21.83028°N 73.74722°E /21.83028; 73.74722 |
| Length | 532 km (532,000 m) |
| Width | |
| • minimum | 10.3 m (34 ft) Width at tail |
| • maximum | 76 m (249 ft) Base Width at source |
| Depth | |
| • maximum | 7.6 m (25 ft) depth at source |
| Discharge | |
| • minimum | 70.79 cumec at tail (Gujarat-Rajasthan Border) |
| • maximum | 1132.66 cumec (40000 cusec) at source |
| Basin features | |
| River system | Narmada |
| Aforementioned information retrieved from the Narmada Control Authority[1] | |
TheNarmada Canal is acontour canal inWestern India that brings water from theSardar Sarovar Dam to the state ofGujarat and then intoRajasthan state. The main canal has a length of 532 kilometres (331 mi) (458 kilometres (285 mi) in Gujarat and then 74 kilometres (46 mi) in Rajasthan). It is the second longest canal in India (after theIndira Gandhi Canal) and the largest canal by water carrying capacity (40,000 cusec at source).[1] The main canal is connected with 42 branch canals providing irrigation to 2,129,000 hectares (5,260,000 acres) farmland (about 18 lakh hectares inGujarat and 2.5 lakh hectares inRajasthan).[1] The canal is designed to transfer 9.5 millionacre-feet (11.7 cubic kilometres) water annually from theNarmada Basin to areas under other river basins in Gujarat and Rajasthan. (9 MAF for Gujarat and 0.5 MAF for Rajasthan).[2]
Soon after the completion of the construction project, the Narmada canal was inaugurated on 24 April 2008.[3] It has carrying capacity of 40,000cubic foot per second (cfs or cusec) at its head in Navagam and is decreased to 2,600 cusecs at Sanchore. On the way, Narmada main canal crosses many rivers and water bodies. The main canal itself can hold 220 MCM (Millioncubic metre) of water at full supply depth. It is designed not only for the water supply but also the storage of water to improve the response time of the system.[4]
The main canal has 38 branches in Gujarat.
Saurashtra Branch is the largest of these branches which has a length of 104.46 km and discharge of 15,002 cubic feet per second (424.8 m3/s). The Saurashtra branch canal has 3 minihydroelectricity plants to utilize the energy from water at the fall of 52 metres (171 ft) in first 59 km. Subsequently, in the 59 to 104.46 km span it has five pumping stations to pump the water 66 metres (217 ft) up before tailing into Bhogavo - II reservoir.[4]
Although theNarmada River does not flow through Rajasthan and no area of Rajasthan falls in theNarmada basin, considerations were made to irrigate its lands with the water from theNarmada River that flows through the neighboring state of Gujarat, to encourage peasants to settle in the areas along the international border with Pakistan. After traversing 458 kilometres (285 mi) in Gujarat, the Narmada canal enters Rajasthan near Shilu in the Sanchortehsil of Jalore.[5] The 74 kilometres (46 mi) main canal, with 9 major distributaries, serves an area of 1,477 square kilometres (570 sq mi), including 124 villages.[6] In total, it was designed to irrigate 246,000 hectares (610,000 acres) in 233 villages in Jalore and Barmer and provide drinking water to 1,336 villages.[5]
The Narmada canal has a few unique features compared to other projects:[7]
Solar canals are being installed along a 1 kilometre (0.62 mi) pilot project section of the Sanand Branch Canal near Chandrasan village to generate 1 megawatt (1,300 hp) of electricity. The solar panels are forecast to also reduce evaporation of water from the canal by 9,000,000 litres (2,000,000 imp gal; 2,400,000 US gal) per year.[8][9]