The respective storm totals at three surrounding stations A, B and C are 110, 90 and 70 mm. If the normal annual precipitation amounts at stations X, A, B and C are respectively 1000, 1100, 1200 and 1250 mm, the estimated storm precipitation at X is
Options
A. 75 mm
B. 77 mm
C. 79 mm
D. 81 mm.
Correct Answer
77 mm
Water Resources Engineering problems
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1. The radius of influence is
Options
A. radius of the main well
B. distance from the wall of main well to the point of zero draw down
C. distance from the centre of main well to the point of zero draw down
3. In estimating the rate of evaporation from the reservoir surface, a pan 1.5 metres in diameter, was filled upto 8.0 cm. During a specified period of time, the rainfall recorded was 5 cm. 3 cm of water was removed from the pan to keep the depth of water. At the end of the time, the depth was 9 cm. If the pan coefficient is 0.6, the evaporation loss is