131. In North Indian Plains, optimum depth of kor watering for wheat, is
132. The main cause of silting up a channel,
133. A fall which maintains its depth, is
134. Retrogression of the bed level of a river downstream a weir, occurs due to
135. The depth of the crest of a scouring sluice below the crest of a head regulator, is generally kept
136. For smooth entry of water in a canal, the angle between head regulator and water is generally kept
137. For a catchment area of 120 km2, the equilibrium discharge in m3/hour of an S-curve obtained by the summation of 6 hour unit hydrograph is
138. If the demand line drawn from a ridge in a flow mass curve does not intersect the curve again, it indicates that
139. The most suitable material for the central impervious core of a zoned embankment type dam is
140. The relation between probability (P) and recurrence interval (T) is given by
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