Irrigation Engineering
The most suitable location of a canal head work, is

Delta stage of the river
Rock stage of the river
Trough stage of the river
Boulders stage of the river

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Irrigation Engineering
Lacy's regime condition is obtained if

Silt charge in the channel is variable
Channel flows in unlimited, incoherent alluvium of the same character as that transported material
Silt grade in the channel is variable
Discharge in the channel is variable

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