Irrigation Engineering
Which one of the following statements is correct?

The canal system and the drainage system are complementary
All listed here
The drainage system runs along the lowest line, collects drainage water from the slopes and joins the main stream
The canal system runs on ridges, gets divided into smaller channels and spreads its water on the land

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Irrigation Engineering
For a standing crop, the consumptive use of water is equal to the depth of water

Used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil
Transpired and evaporated by the crop
Transpired by the crop
Evaporated by the crop

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