The Syphon Aqueduct crosses the river Unch at the bed level of river. Total length of the structure is 80.62 m. Total 30 barrels of 7.15 m width and 5.50 m height are provided for River water-way. The width of the structure is 91.90 m.
On the Narmada main canal, at junctures where the main canal meets a river, either a siphon is built wher the canal passes under the river bed or an aqueduct is constructed where the canal carries the water over the river via the uilt structure. There are also places where a combination of the syphon and aqueduct is built to facilitate the river to take its course and also the canal to cross the river. One such siphon acqueduct is built across the river Unch at ch. 35.702 Km of the Narmada Main Canal (NMC). This is one of the large syphon - Aqueduct built in the country. The canal Syphon Aqueduct is an engineering and structural marvel. Its design has been done entirely in-house by engineers of the Sardar Sarovar Narmada Nigam Ltd.
The length of Syphon Aqueduct across the river is 80.62 m. The foundation and substructure consists of open foundation with R.C.C. raft. The Narmada water flow of 1133.550 cubic meter per second will be carried across the river Unch through the Syphon Aqueduct structure of 3 monoliths having 10 barrels each of 7.15 m width and 5.50 m height supported over open foundation with R.C.C. raft. The work of this structure is completed in June 1996.
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