A catchment has six rain gages. The annual rainfall recorded by gages are as follows. Station 3 4 5 Rainfall 82.6 102.9 180.3 110.3 98.8 136.7 (cm) For 10% error in the estimation of the mean rainfall, calculate the optimum number of the stations in the catchment.

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Q: calculate the optimum no. of rain gauge stations in the

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Probability, risk and uncertainty analysis for hydrological design

It gives a framework that is financially critical for finding the exceptional designs of hydrological systems with a reduced cost in total inclusive of the project cost and the disaster mitigation cost. But there would be hardly any assessment of a decent quality damage function. Hence, errors in demonstrating the hydrologic events, incorrect model parameters, and so on may occur. Here, we will discuss a specific hydrological design that of a detention basin for studying and understanding the risk-based procedure, uncertainties, and probability analysis by following a systematic framework.