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Author Question: Given a rank for a particular flood event of 25 and a record of 24 years duration, what is the ... (Read 121 times)

jazziefee

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on: Jul 15, 2018

Given a rank for a particular flood event of 25 and a record of 24 years duration, what is the recurrence
  interval for a flood of this size? What will be an ideal response?



Question 2

Why is a longer historical record of peak discharge preferred for a given river when determining the
  statistical recurrence interval for flood events? What will be an ideal response?



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pallen55

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Reply #1 on: Jul 15, 2018
Answer to Question 1

On the average, a flood of this size would be expected to occur once a year. This is calculated by
adding 1 to the duration of the record in years (24 + 1) and then dividing this result by the rank of the
event (25).



Answer to Question 2

Short records may not include less frequent large flood events. As a result, there is a danger of
underestimating the size of future events and their recurrence intervals.



jazziefee

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Reply 2 on: Jul 15, 2018
Excellent

jackie

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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