Baseflow characterization on selected river catchments in the Northern Andean of Ecuador

The baseflow is essential for water yield in river basins. Despite its importance, few studies focus on the baseflow, especially in the transect of northern Ecuador, which includes the provinces: Esmeraldas, Carchi, Imbabura, and Sucumbíos. In general, identifying its characteristics and the factors that influence its generation can lead us to understand the water balance of these basins. In this study, the WETSPRO digital filter separated the baseflow from the streamflow in 12 catchments north of Ecuador. Twelve baseflow signatures were used to evaluate the hydrological behavior of the baseflow. These signatures include two firms of the magnitude of flow events, one rate of change in flow events, five distribution firms, and three signatures of baseflow dynamics. Through the analysis, it was possible to find: 1. that the baseflow increases and remains large after the rainy seasons, even in summer (dry season). 2. that the variation of the baseflow is influenced by elevation, slope, and mainly by the lithology of each region. 3. that the rocks and the sedimentary deposits dominate the study region. 4. Also, the factors that capture more baseflow in the bedrock are the rocks of volcanic origin, which are more minor extensions than sedimentary origin. 5. Qb1 Qb33, Qb66 Qb99 CI, and SBDC were good predictors for understanding baseflow variability in the quarters: DJF, MAM, and JJA.

• 主要作者: Oña Morales, Lisbeth Alexandra (author)
• 格式: bachelorThesis
• 語言: eng
• 出版: 2022
• 主題: Flujo base; Constante de recesión; Descriptores de cuencas; Firmas de flujo base; Regresión lineal múltiple; Baseflow; Recession constant; Catchment descriptors; Baseflow signatures; Multiple linear regression
• 在線閱讀: http://repositorio.yachaytech.edu.ec/handle/123456789/518