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Article

Regional Parameter Estimation of the SWAT Model: Methodology and Application to River Basins in the Peruvian Pacific Drainage

Dirección de Hidrología, Servicio Nacional de Meteorología e Hidrología del Perú (SENAMHI), Lima 15072, Peru
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Water 2020, 12(11), 3198; https://doi.org/10.3390/w12113198
Received: 15 September 2020 / Revised: 5 November 2020 / Accepted: 6 November 2020 / Published: 16 November 2020
(This article belongs to the Section Hydrology and Hydrogeology)
This study presents a methodology for the regional parameters estimation of the SWAT (Soil and Water Assessment Tool) model, with the objective of estimating daily flow series in the Pacific drainage under the context of limited hydrological data availability. This methodology has been designed to obtain the model parameters from a limited number of basins (14) to finally regionalize them to basins without hydrological data based on physical-climatic characteristics. In addition, the bootstrapping method was selected to estimate the uncertainty associated with the parameters set selection in the regionalization process. In general, the regionalized parameters reduce the initial underestimation which is reflected in a better quantification of daily flows, and improve the low flows performance. Furthermore, the results show that the SWAT model correctly represents the water balance and seasonality of the hydrological cycle main components. However, the model does not correctly quantify the high flows rates during wet periods. These findings provide supporting information for studies of water balance and water management on the Peruvian Pacific drainage. The approach and methods developed can be replicated in any other region of Peru. View Full-Text
Keywords: regional parameters; SWAT; daily flows; Peruvian Pacific drainage regional parameters; SWAT; daily flows; Peruvian Pacific drainage
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MDPI and ACS Style

Asurza-Véliz, F.A.; Lavado-Casimiro, W.S. Regional Parameter Estimation of the SWAT Model: Methodology and Application to River Basins in the Peruvian Pacific Drainage. Water 2020, 12, 3198. https://doi.org/10.3390/w12113198

AMA Style

Asurza-Véliz FA, Lavado-Casimiro WS. Regional Parameter Estimation of the SWAT Model: Methodology and Application to River Basins in the Peruvian Pacific Drainage. Water. 2020; 12(11):3198. https://doi.org/10.3390/w12113198

Chicago/Turabian Style

Asurza-Véliz, Flavio A.; Lavado-Casimiro, Waldo S. 2020. "Regional Parameter Estimation of the SWAT Model: Methodology and Application to River Basins in the Peruvian Pacific Drainage" Water 12, no. 11: 3198. https://doi.org/10.3390/w12113198

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