The excapes must lead the surplus water to natural drainage.

Related MCQs

• The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in
• 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 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.
• 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
• Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?
• A part of water which will move out of the soil, if proper drainage is provided, is known as gravitational water.
• 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.
• Sandy soils with good drainage become impermeable after prolonged use, if it is irrigated with a water containing
• In level crossing, the water level of canal is much higher than that of the drainage.
• The moisture content of the soil, after free drainage has removed most of the gravity water, is known as