The peak flow of a flood hydrograph caused by an isolated storm was observed to be 100 m³/s. The storm had a duration of 8 hours and total depth of rainfall was 7 cm. If in the above storm, the total rainfall was 9.5 cm in the same duration of 8 hours, then the flood peak discharge is found to be increased by 40%. Considering the base flow as 20 m³/s, the value of -index for the given catchment is cm/h (round off to two decimal places).

Q: A 1-h rainfall of 10 cm magnitude at a station has a return period of 50 years. The probability that…

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Q: A culvert is designed for a flood frequency of 100 years and a useful life of 20 years. The risk…

A: Given that :- Return period = T = 100 years Useful life = n = 20 years To calculate the risk…

Q: Water is initially flowing at a depth of y₁ = 2.0 m with a velocity V₁ = 1.0 m/s in a rectangular…

A: Initial Depth, Initial velocity, Reduction in dischargeTo find: The height and speed of the…

Q: The peak flow of a flood hydrograph caused by an isolated storm was observed to be 100 m³/s. The…

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Q: arrying a discharge of 142 m³/s, the 1 in 6000. If during a flood, the stag t was the flood…

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Q: The return period for the annual maximum flood of a given magnitude is 8 years. The probability that…

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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.