West Bengal | Manas-Sankosh-Tista-Ganga (M-S-T-G) link

Interlinking of the Brahmaputra with the Ganga, the Subernarekha and the Mahanadi is proposed to transfer waters of the Brahmaputra to benefit areas in Assam, West Bengal, Bihar, Jharkhand and Orissa.

The second Brahmaputra– Ganges link canal, known as Manash-Sunkosh-Tista-Ganga, includes the construction of two dams on the Manash and Sunkosh rivers 14 in Bhutan and the diversion of water to the Ganges via the Tista River. The Manas-Sankosh-Teesta-Ganga link is an important link in this component. This link envisages diversion of surplus water from Manas and Sankosh rivers in the Brahmaputra basin to augment flows of the Ganga upstream of Farakka. A link to the Peninsular component through Subernarekha and Mahanadi is also envisaged. For this link high dams are proposed at Manas and Sankosh with storage capacities of 8.75 BCM and 4.93 BCM, respectively (Singh 2002). A substantial part of the cost of these dams will be allocated to hydropower generation. The 114 km long link canal between Manas and Sankosh will have a discharge capacity of 3,725 m3/s. Beyond Sankosh and up to the Teesta barrage, the link canal is 137 km long with a capacity of 1,092 m3/s. Clearly, this will be a huge canal which will cross major drainages. The MSTG link passes through the narrow chicken neck in West Bengal (north of Bangladesh) and may have security aspects.

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