Evaluation of the HEC-HMS model for the hydrological simulation of a paramo basin

In this study, the performance of the HEC-HMS model was evaluated for the simulation of rain-runoff processes in a paramo basin of approximately 21. 8 km2, south of Ecuador. The calibration and validation comprises the period of July-2013 to June-2016 with daily data. The Soil Moisture Accounting (S...

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Bibliographic Details
Published in:DYNA
Main Authors: Timbe Castro, Luis Manuel, Crespo Sánchez, Patricio Javier, Cabrera-Balarezo, Juan José
Format: Article in Journal/Newspaper
Language:Spanish
Published: Universidad Nacional de Colombia - Sede Medellín - Facultad de Minas 2019
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Online Access:https://revistas.unal.edu.co/index.php/dyna/article/view/70738
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Summary:In this study, the performance of the HEC-HMS model was evaluated for the simulation of rain-runoff processes in a paramo basin of approximately 21. 8 km2, south of Ecuador. The calibration and validation comprises the period of July-2013 to June-2016 with daily data. The Soil Moisture Accounting (SMA) method was used to compute the water flow in the soil. For the rainfall distribution, the Thiessen method was used, while the Evapotranspiration was calculated with the Penman-Monteith equation. The results revealed that (1) 83% of the water infiltrates the soil while only 17% is retained in plants and the soil surface, (2) the water is retained for approximately 42 days before reaching the river and (3) that more than 60% of the flow corresponds to sub-surface flow. En este estudio se evaluó el desempeño del modelo HEC-HMS, para la simulación de los procesos de lluvia-escorrentía en una cuenca de páramo de aproximadamente 21. 8 km2 al sur del Ecuador. La calibración y validación comprende el periodo de julio-2013 a junio-2016 con datos diarios. Se usó el método de Contenido de Humedad del Suelo (SMA) para calcular el flujo de agua en el suelo. Para la distribución de la lluvia se utilizó el método de Thiessen, mientras que la Evapotranspiración se calculó con la ecuación de Penman-Monteith. Los resultados revelaron que (1) el 83% del agua se infiltra en el suelo mientras que solo el 17% es retenido en plantas y la superficie del suelo, (2) el agua es retenida por aproximadamente 42 días antes de llegar al río y (3) que más del 60% del flujo corresponde a flujo sub-superficial.