Curves showing the relationship between rainfall or precipitation intensity and duration for different levels of frequency; each curve represents the rainfall intensity-duration which will be equaled or exceeded once in a certain number of years, indicated as the frequency of that curve.
RAINFALL (PRECIPITATION) INTENSITY-DURATION-FREQUENCY CURVE
Meaning of RAINFALL (PRECIPITATION) INTENSITY-DURATION-FREQUENCY CURVE in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012