the double mass curve technique adopted to
estimate the missing data
obtain intensities of rainfall at various durations
to obtains the amount of storage needed to maintain a demand pattern
to check the consistency of data
None of the above
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the double mass curve technique adopted to
estimate the missing data
obtain intensities of rainfall at various durations
to obtains the amount of storage needed to maintain a demand pattern
to check the consistency of data
None of the above
a mean annual runoff 1 m3/s from a catchment of area 10 km2 represents an effective rainfall of
10.0 cm
315.4 cm
100 cm
31.54 cm
150 cm
A hydrograph is a plot of
Stream discharge against time
Rainfall intensity against time
Cumulative rainfall against time
Cumulative runoff against time
None of the above
The area between the isohytes 0.45 m and 0.55 m is 100 Sq.km and between 0.55 m and 0.65 m is of 150 Sq.km. The average depth of annual precipitation over the above basin of 250 Sq.km will be
0.50 m
0.55 m
0.56 m
0.60 m
1.0 m
Consider the factor affecting the evaporation losses:
The rate of evaporation increases as the wind speed decreases.
The rate of evaporation decreases with the increase in atmospheric pressure.
The rate of evaporation increases with an increase in salt concentration in water.
The rate of evaporation increases as the saturation vapor pressure increases.
Choose the incorrect statement:
1, 2
2, 3
1, 3
2, 4