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What is the purpose of a super-passage in irrigation engineering?

  • A.To cross the canal over the natural stream
  • B.To cross the canal below the natural stream
  • C.To cross the natural stream at relatively same level
  • D.To divert the water from the river to the canal

Answer: B

A super-passage is a cross-drainage work in which the canal is taken below the natural stream: the drainage passes over the canal in a trough, so the canal flows beneath it. The opposite arrangement, where the canal is carried over the drainage, is an aqueduct. Crossing at nearly the same level is done by a level crossing, and diverting water from a river into a canal is the function of a headworks or a weir, not of a super-passage.

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