Intensity-duration-frequency curve

From Glossary of Meteorology

intensity–duration–frequency curve

Rainfall intensity–duration–frequency curves describe the rainfall intensity for a given exceedance probability over a range of durations.

They are important for the design of many facilities when it is not clear what the critical duration will be. Often a family of curves is provided where each curve corresponds to the duration– intensity relationship for a specific exceedance probability.

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