Irrigation Engineering
If water table is comparatively high, the irrigation canal becomes useless, due to

Uncertain water demand
Large amount of seepage
Water logging of the cultivated areas
All of these

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Irrigation Engineering
Bligh's theory of seepage assumes

Equal weightage to the horizontal and vertical creep
More weightage to horizontal creep than vertical creep
Less weightage to horizontal creep than vertical creep
Loss of head follows the sine curve

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Irrigation Engineering
If A is the area of the surface, x̅ is the depth of its C.G. from the surface of the water and ω is the density of water, then

Depth of the centre of pressure is 2/3H vertically below the surface
Total pressure on the surface is equal to ωx̅
All listed here
Depth of the point at which total pressure acts is equal to its moment of inertia divided by Ax̅

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