WATER RESOURCES ENGINEERING
3rd Edition
ISBN: 9781119490579
Author: Mays
Publisher: WILEY
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Chapter 2, Problem 2.2.1P
To determine
The comparison between the most recent US Drought Monitor and the given Figure.
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68.Which of the following statements regarding floods is true ?
Select one
a. a 40 - year flood is generally of greater magnitude than a 80 - year flood
b. a 200 - year flood has a 2 % chance of occurring in any one year
c. if there is a 10 % probability of a flood of a certain height occurring in any one year it is called a 10 - year flood
d . the recurrence interval of a flood of a certain height does not depell upon the width of the floodplain
2. What is the probability that a 50-year river
level will occur within the next 10 years at any given location?
A severe drought can have significant environmental, agricultural, health, economic and social consequences.
Select one:
True
False
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- 4- One of the engineers wants to fit a distribution on the precipitation data, what type of distribution do you suggest fitting the distribution and why? 5- A recreational park is built near a creek. The stream channel can carry 200 m^3/s which is the peak flow of the 5-yr. storm of the watershed. What is the probability the park will flood once in the next 10 years? What is the probability the park will flood next year?arrow_forwardA rainstorm over a levee with an area of (500) hectares, as its details are shown in the table below. If the volume of direct surface runoff coming out of the levee is Mm3 (0.340), calculate an index for the rainstorm, and the increase in the falling rain? Time from start (hr) Cumulative rainfall (cm) 0 0 2 4 0.8 2.6 6 4.1 8 7.3 10 12 10.8 11.8. 14 12.4 16 12.6arrow_forwardIs it necessary to increase precipitation data frequency to predict flooding in Ghana? Justify your reasons.arrow_forward
- A small watershed has four rainfall gages located in the figure below. Total rainfallrecorded at each gage during a storm event is listed in the table. Compute the mean areal rainfallfor this storm using (a) arithmetic averaging and (b) the Thiessen method.arrow_forwardIs it necessary to increase precipitation data frequency to predict flooding in Ghana? Justify your reasons for your answerarrow_forwardA small urban watershed has four rain gauges as located in the figure. Total rainfall recorded at each during a storm event is listed. Compute the mean aerial rainfall for this storm using T.P.Marrow_forward
- Q.5. Floods in a stream have the mean 600 m3/s and the standard deviation 400 m3/s. Pleaseanswer the following questions assuming normal distribution.a) What is the probability that the flood flow any year exceeds 700 m3/s?b) What is the 100-year flood discharge?arrow_forwardEstimate missing Rainfall Data Why do we need to estimate the missing data when performing statistical analyses?arrow_forwardWhat is the Duration of Effective Rainfall (Duration of the Unit Hydrograph)?arrow_forward
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