An irrigation canal with trapezoidal cross-section has the
following elements: bottom width = 2m, depth of water = 0.9m, side
slope 1.5H to 1V, slope of canal bed = 0.001, n = 0.025. The canal
will serve clay-loam rice land.
What is the hydraulic radius in meters?
What is the mean velocity in m/s?
If the canal will serve a clay-load rice land, determine the
area in hectares it can serve if the duty of water per hectare is
3L/s.