Análisis comparativo de tres hidrogramas unitarios sintéticos en dos cuencas mediterráneas de Chile, Región Del Maule

Translated title of the contribution: Comparative analysis of three synthetic unit hydrographs in two mediterranean watersheds in the maule Region of Chile

Roberto Pizarro-Tapia, Francisco Balocchi-Contreras, Fernando Andrade-Vilaró, Claudia Sangüesa-Pool, José A. Vargas, Carolina Morales-Calderón, Mauricio Vera-Camiroaga, Rodrigo Valdés-Pineda, Carlos Vallejos-Carrera, Romina Mendoza-Mendoza, Claudio Olivares-Santelices, Alejandro Abarza-Martínez, Roberto Fuentes-Lagos

Research output: Contribution to journalArticlepeer-review

Abstract

This paper compares three methods to obtain synthetic unit hydrographs (SUH). The Snyder (modified for Chile by Astorga and Benítez), the US Bureau of Reclamation, and the Témez methods are analyzed on two watersheds located in Mediterranean areas of Chile. To do so, each watershed was characterized in terms of its morphology and vegetation type. In addition, data from three actual storms, with high, medium, and low rainfall intensities, were used to obtain direct runoff hydrographs (DRH) for both watersheds. The NRCS Curve Number method was used to estimate runoff responses to storm events. Our results suggest that, in general, the SUH used had no significant differences between watersheds. On the other hand, the Snyder SUH method was the only one that found significant differences in the DRHs relative to the other methods and only under a high-intensity storm in the Cunculén watershed.

Translated title of the contributionComparative analysis of three synthetic unit hydrographs in two mediterranean watersheds in the maule Region of Chile
Original languageSpanish
Pages (from-to)5-20
Number of pages16
JournalRevista Chapingo, Serie Ciencias Forestales y del Ambiente
Volume20
Issue number1
DOIs
StatePublished - 1 Jan 2014
Externally publishedYes

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