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

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

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Irrigation Engineering
In a syphon aqueduct

Canal passes over the drainage and H.F.L. of the drainage is above the bottom of the canal trough
Drainage passes over the canal and F.S.L. of the canal is below the bottom of the drainage trough
Canal passes over the drainage and H.F.L. of the drainage is below the bottom of the canal trough
Drainage passes over the canal and F.S.L. of the canal is above the bottom of the drainage trough

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