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Analysis of the Behavior of Daily Maximum Rainfall within the Department of Atlántico, Colombia

1
School of Engineering, Civil and Environmental Engineering Master Program, Universidad Tecnológica de Bolívar, Cartagena de Indias 131001, Colombia
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Boswell Engineering, South Hackensack, NJ 07606, USA
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School of Engineering, Civil Engineering Program, Universidad de Cartagena, Cartagena de Indias 13001, Colombia
*
Author to whom correspondence should be addressed.
Water 2019, 11(12), 2453; https://doi.org/10.3390/w11122453
Received: 17 October 2019 / Revised: 17 November 2019 / Accepted: 19 November 2019 / Published: 22 November 2019
(This article belongs to the Section Hydrology and Hydrogeology)
In the Colombian Caribbean region, there are few studies that evaluated the behavior of one of the most commonly used variables in hydrological analyses: the maximum daily rainfall (Pmax-24h). In this study, multiannual Pmax-24h time series from 19 rain gauges, located within the department of Atlántico, were analyzed to (a) determine possible increasing/decreasing trends over time, (b) identify regions with homogeneous behavior of Pmax-24h, (c) assess whether the time series are better suited under either a stationary or non-stationary frequency analysis, (d) generate isohyetal maps under stationary, non-stationary, and mixed conditions, and (e) evaluate the isohyetal maps by means of the calculation of areal rainfall (Pareal) in nine watersheds. In spite of the presence of both increasing and decreasing trends, only the Puerto Giraldo rain gauge showed a significant decreasing trend. Also, three regions (east, central, and west) with similar Pmax-24h behavior were identified. According to the Akaike information criterion test, 79% of the rain gauges showed better fit under stationary conditions. Finally, statistical analysis revealed that, under stationary conditions, the errors in the calculation of Pareal were more frequent, while the magnitude of the errors was larger under non-stationary conditions, especially in the central–south region. View Full-Text
Keywords: rainfall frequency analysis; non-stationary; areal precipitation; isohyetal map; stormwater management; trend analysis rainfall frequency analysis; non-stationary; areal precipitation; isohyetal map; stormwater management; trend analysis
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Viloria-Marimón, O.M.; González-Álvarez, Á.; Mouthón-Bello, J.A. Analysis of the Behavior of Daily Maximum Rainfall within the Department of Atlántico, Colombia. Water 2019, 11, 2453.

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