Probability functions for extreme precipitation in the Guadalquivir basin
DOI:
https://doi.org/10.20868/ade.2026.5708Keywords:
Probability functions, Rainfall, Natural disaster, Guadalquivir, Hydrographic ConfederationAbstract
Hydrometeorological calculation models are required for the design of hydraulic works, both in urban areas, including sewerage works, and in civil engineering, including dams and their spillways. These models use design storms, which are developed from meteorological data on extreme precipitation, and appropriate probability distribution functions. There are different options within the distribution functions. This paper conducts a comparative analysis between the SQRT-ET max, log-Pearson III, Gumbel, and three-parameter log-normal functions. The study area is the Guadalquivir basin, where eight weather stations have been selected with data on maximum annual precipitation over 24 hours between 1973 and 2024. These are the weather stations in Seville, Córdoba, Jaén, Granada, Puebla del Maestre, Jerez de la Frontera, Beas de Segura, and Guadix.
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