A structure constructed in an irrigation canal for the purpose of wasting some of its water, is known as a

Related MCQs

• Study the following statements. i) Levees are constructed parallel to river flow, ii) Spurs are constructed parallel to river flow, iii) Levees are constructed transverse to river flow, iv) Spurs are constructed transverse to river flow. The correct answer is
• When the levels are such that the F.S.L. of the canal is much above the bed level of the drainage trough, so that the canal runs under syphonic action under the trough, the structure provided is known as
• Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?
• When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the under side of the supporting structure, the structure provided is super-passage.
• A solid construction put across the river to raise its water level and divert the water into the canal, is known as
• The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in
• When the irrigation canal and the drain are at the same level, then the cross drainage work is achieved by providing a
• The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called
• The whole period of cultivation from the time when irrigation water is first supplied for preparation of the ground to its last watering before harvesting, is called
• For a canal which irrigate the area directly, the fall should be provided at a location where the F.S.L. outstrips the gound level, but before the bed of the canal comes into filling.