Bibliographic citations
Jiménez, A., (2021). Simulación a escala diaria con fines de evaluación de la variabilidad hidrológica en la cuenca del río Tambo [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/5312
Jiménez, A., Simulación a escala diaria con fines de evaluación de la variabilidad hidrológica en la cuenca del río Tambo []. PE: Universidad Nacional Agraria La Molina; 2021. https://hdl.handle.net/20.500.12996/5312
@misc{renati/248670,
title = "Simulación a escala diaria con fines de evaluación de la variabilidad hidrológica en la cuenca del río Tambo",
author = "Jiménez Yanasupo, Andrés Joaquín",
publisher = "Universidad Nacional Agraria La Molina",
year = "2021"
}
This study proposes the hydrological simulation on a daily basis in the Tambo river basin, located in southern Peru, in order to know the water availability in different areas of the basin and analyze how it has varied over four decades in both the hydrological as well as the climatic aspect. For this, the SWAT hydrological model was used as a tool, which depends on data such as soil type, vegetation cover, digital elevation model, and of course on climatic data. The model was calibrated and validated using the Nash, PBIAS, RSR and R2 statistics, obtaining "good" and "satisfactory" values on a daily scale, as well as "very good" and "good" on a monthly scale. Flows were simulated in the 55 sub-basins delimited with the help of the model, where three of these were chosen, located in the high, medium and low zones, to analyze the water availability in each of them. Of the general water balance of the basin, the highest values with respect to precipitation, evapotranspiration, base flow and surface runoff, have occurred in the upper zone, decreasing their magnitudes as they descend on it. Regarding the flows, the most extreme events between decades were compared, and the persistence analysis was also carried out at 75% through the flow duration curves. Climate variability was evaluated using the 27 climatic indices recommended by the Expert Team for the Detection of Climate Change Indices (ETCCDMI), in the high, medium and low zones, along with hydrological variability using two indices adapted for flows. Through the probability density curves, significant variations were found with respect to temperatures, which increase from decade to decade, but not in terms of precipitation; Finally, regarding the variability of the flow before and after the commissioning of the Pasto Grande reservoir, the effects are shown in the flows in the dry season, which have decreased during this time of the year for the post-reservoir period.
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