   Chapter 14, Problem 2PA

Chapter
Section
Textbook Problem

One hundred years of maximum annual flow data show that the stream under study had a maximum annual discharge of 3,700 cubic meters per second, or greater, five times. What is the recurrence interval of this flow? What is the probability that a discharge of 3,700 cubic meters per second will occur this year?

To determine

The recurrence interval of the given flow and its probability of occurrence in the present year if its discharge is 3700m3/s or more.

Explanation

Given information:

The maximum discharge of the stream can be 3700m3/s or more in 5 of 100years.

The recurrence interval is calculated by the expression given below:

Recurrence interval=100Given number of years

Substitute the value of the given number of years as 5 in the above expression.

Recurrence interval=1005=

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