A small watershed has four rainfall gages located in the figure below. Total rainfall recorded at each gage during a storm event is listed in the table. Compute the mean areal rainfall for this storm using (a) arithmetic averaging and (b) the Thiessen method.

Q: Question- There are 16 number of rain gauge stations which gives an error of 10% while estimating…

A: Number of stations N=16, Error e=10%, To Find- The coefficient of variation of the rainfall (Cv).

Q: The 1-hr unit hydrograph of a catchment is given in Table 4.1. Meteorological observations from a…

A: a) Calculation of catchment area: Using the following relation catchment area can be calculated:

Q: Followings are given for a watershed: Rational method coefficient C = 0.37 Time of concentration =…

A: Solution: Given Data: Rational coefficient method, C=0.37Time of concentration=30 minWatershed…

Q: DA River in the Thunder Bay area experienced peak floods of 2600 ft/s and 3000 ft³/s respectively…

A: Peak floods (a) = 2600 ft3/sec Return period (a) = 15 years Peak floods (b) = 3000 ft3/sec Return…

Q: A watershed has five rain gauge stations. In a year, the annual rainfall recorded by rain gauges are…

A: 1. Annual rainfall recorded by the five rain gauge stations (in cm): 115.5, 106.8, 125.4, 95.6, and…

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

A:

Q: create a hyetograph of the storm event. What is the maximum rainfall intensity? b) Plot the rainfall…

A: Area of dirt lot = 2 acretime steps = 0.5 hrrunoff coefficient =0.7time, intensity table is given…

Q: The hyetograph in the figure corresponds to a rainfall event of 3 cm. Rainfall intensity (mm/hour) 0…

A:

Q: A gage on a small (1-acre) urban parking lot recorded the following incremental rainfall data. 1.5 2…

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Q: rainfall hyetograph shows a) the total volume of rainfall for a storm event; b) the cumulative…

A:

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.