Using the data in Figure 43-2, calculate the recurrence interval for Cache Creek’s streamflow for the years 1990, 1997, 2003, and 2013. Once you have calculated the recurrence intervals, fill in your answers below and in Figure 43-2 (round your answers to 1 decimal place).

1990: ______ years
1997: ______ years
2003: ______ years
2013: ______ years


1990: 1.0 years
1997: 3.7 years
2003: 9.3 years
2013: 4.1 years

Environmental & Atmospheric Sciences

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Indicate whether the statement is true or false

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