Question Statement:
Hydrology: Hydrological cycle and measurement of its components; meteorological parameters and their measurement; analysis of precipitation data; runoff estimation; hydrograph analysis, unit hydrograph theory and application; stream flow measurement; flood routing, hydrological reservoir and channel routing, Infiltration – indices and equations, drought and its classification.
A catchment has 8 raingauge stations. Annual rainfall (cm): 93.8, 106.5, 170.6, 138.7, 87.8, 156.2, 180.9, 110.3. For a 10% error in estimating the mean rainfall, the optimum number of stations is
Options:
- (A) 4
- (B) 6
- (C) 8
- (D) 10