i. Kosi-Mechi Link Canal :
The 112.55 km. long canal will mainly pass through the "Terai" area in Nepal. It will start from the left side of Chatra barrage and fall into Mechi river after crossing over three small rivers Bakra, Ratuwa and Kankai through syphon aqueduct. The canal's receiving capacity will be 1407.80 cubic metre per second (cumec) and discharge rate will be 97.64 cumec. The canal would provide irrigational facility to 4.74 lakh hectares of land. Out of this, 1.75 lakh hectares shall be irrigated in Nepal and 2.99 lakh hectares in Bihar. Besides this, provision of 24 MCM water has been made for domestic and industrial requirements of the towns falling in between. As proposed, it would divert 883 MCM water at the rate of 28 cumec to Mechi river for increasing the water in Mahananda river. The canal would also provide navigational facility from Chatra to Ganga via Mechi and Mahananda rivers.
ii. Kosi-Ghaghara Link Canal :
The 428.76 km long canal, which will start from the right side of the Chatra barrage, will fall in Gaura river, a tributary of Chaghara river, in Uttar Pradesh after crossing over Tiljuga, Khanro, Bagmati and Lalbakkeya rivers in Nepal and Gandak river in Bihar. The canal's receiving capacity will be 1021 cumecs while it will discharge 67 cumec in Gaura river. The total benefited area through this link canals is 10.58 lakh hectares. Out of this, 1.74 lakh hectare area shall be of Udaipur, Saptari, Mahoitari, Sarlahi and Bara districts in Nepal and 8.17 lakh hectare and 0.67 lakh hectare area of North Bihar and Uttar Pradesh, respectively. The canal would also provide 48 MCM water for domestic and industrial requirements of the towns on its way.
iii. Sone dam-Southern tributaries of Ganga Link Canal :
The 339 km long canal will begin from the right side of the proposed dam across Sone river near Kadwan in Jharkhand. The canal would fall into Badua river after crossing over Morhar, Lilajan, Dharmajayi, Sakri and Kiul rivers. Two hydal projects of 3.5 MW and 1.5 MW capacities would be finalised near the junction of Sakri river. The total benefited area through this canal will be 3.07 lakh hectares in the districts of Patna, Nalanda, Gaya, Jehanabad, Munger, Bhagalpur, Nawada, Jamui and Aurangabad of Bihar and Palamu district of Jharkhand.
iv. Chunar-Sone Barrage Link Canal :
The 149.10 km long canal will start from the right side of Ganga river near Chunar Tehsil of Mirzapur district in UP. It will fall into Sone river near Indrapuri barrage in Rohtas district. There would be a lift of 38.8 meters, 16.10 meters and 4.4 meters at three different places on route. In addition to taking over substantial command areas of Western Sone High Level and low level canals, this link canal will provide irrigation in 66,793 hectares of new area in Mirzapur, Varanasi and Gazipur districts of UP and Bhabhua, Rohtas, Buxar and Bhojpur districts of Bihar.
v. Brahmaputra - Ganga (Manas- Sankosh- Teesta- Ganga Link Canal :
It envisages Construction of 457 km long link canal and a dam on river Manas and a dam and a barrage on river Sankosh in Bhutan. There would be 7 numbers of falls on the canal, out of which 4 nos. of falls are located in Bihar. A total hydro power to the tune of 718 MW will be generated on these falls, out of which 393 MW will be generated on falls located in Bihar. The link canal will provide irrigation benefits to an area of 6.53 lack ha. out of which 2.64 lack ha. are in Bihar.
vi. Gandak-Ganga Canal :
The 639 km long canal, which would start from the right side of the proposed dam across Gandak river in Nepal, will fall in Ganga river near Mustafabad in Rai Bareli district of Uttar Pradesh. It will run through Nepal and various districts of Uttar Pradesh. Though this canal would not cross through Bihar it would make a big impact on the State by taming the flood waters of Gandak. There will be no irrigational facility in Bihar from this canal.
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