Selection of hydrological probability distributions for extreme rainfall events in the regions of Colombia
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Coronado-Hernández, Oscar E. | 2020-05-10
Frequency analysis of extreme events is used to estimate the maximum rainfall associated
with different return periods and is used in planning hydraulic structures. When carrying out this type
of analysis in engineering projects, the hydrological distributions that best fit the trend of maximum
24 h rainfall data are unknown. This study collected maximum 24 h rainfall records from 362 stations
distributed throughout Colombia, with the goal of guiding hydraulic planners by suggesting the
probability distributions they should use before beginning their analysis. The generalized extreme
value (GEV) probability distribution, using the weighted moments method, presented the best fits of
frequency analysis of maximum daily precipitation for various return periods for selected rainfall
stations in Colombia.
LEER