A one-day rainfall of 20.0 cm at a place X was found to have a period of 100  years. Calculate the probability that a one-day rainfall of magnitude equal to or  larger than 20.0 cm. a) Will not occur at station X during the next 50 years. (Ans. 0.605) b) Will occur in the next year. (Ans. 0.01) c) Will occur once in 10 successive years

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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.