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

Related MCQs

• When the full supply level (F.S.L.) of the canal is much below the bed level of the drainage trough, then the cross drainage provided is called syphon aqueduct.
• If the R.L's of canal bed level and high flood level of drainage are 212.0 m and 210.0 m respectively, then cross drainage work will be
• When the bed level of the canal is higher than the highest flood level (H.F.L.) of the drainage, then the cross drainage work is said to be
• 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.
• The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in
• 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.
• In level crossing, the water level of canal is much higher than that of the drainage.
• In a syphon, the underside of the trough carrying drainage water is
• When the irrigation canal and the drain are at the same level, then the cross drainage work is achieved by providing a
• A sudden fall of level of ground along the alignment of a canal joined by an inclined bed is called a