TY - JOUR
T1 - Comparative analysis of three synthetic unit hydrographs in two mediterranean watersheds in the maule Region of Chile
AU - Pizarro-Tapia, Roberto
AU - Balocchi-Contreras, Francisco
AU - Andrade-Vilaró, Fernando
AU - Sangüesa-Pool, Claudia
AU - Vargas, José A.
AU - Morales-Calderón, Carolina
AU - Vera-Camiroaga, Mauricio
AU - Valdés-Pineda, Rodrigo
AU - Vallejos-Carrera, Carlos
AU - Mendoza-Mendoza, Romina
AU - Olivares-Santelices, Claudio
AU - Abarza-Martínez, Alejandro
AU - Fuentes-Lagos, Roberto
PY - 2014/1/1
Y1 - 2014/1/1
N2 - 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.
AB - 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.
KW - Direct runoff
KW - Effective precipitation
KW - Runoff hydrographs
KW - Surface runoff
UR - http://www.scopus.com/inward/record.url?scp=84899824564&partnerID=8YFLogxK
U2 - 10.5154/r.rchscfa.2012.09.054
DO - 10.5154/r.rchscfa.2012.09.054
M3 - Article
AN - SCOPUS:84899824564
SN - 2007-3828
VL - 20
SP - 5
EP - 20
JO - Revista Chapingo, Serie Ciencias Forestales y del Ambiente
JF - Revista Chapingo, Serie Ciencias Forestales y del Ambiente
IS - 1
ER -