Cálculo de la recarga del acuífero de Tumbaco.

Abstract

Tumbaco aquifer belongs to a complex and poorly studied system. The recharge estimation, which is an important parameter of the groundwater system, provides essential information for the proper management of water resources in the area. For the modeling of the water balance, the InVEST Seasonal Water Yield model was chosen. In addition, MODIS satellite images were obtained to estimate evapotranspiration. As a result, a recharge range of 0 to 351.96 mm/year was obtained. The spatial interpretation showed 3 areas with maximum recharge values: the northern part of the aquifer, the south west área of the aquifer and in the piedmont of the Ilaló volcano. The estimation of evapotranspiration resulted in values within a range of 44.46 to 3275.2 mm/year. The sensitivity analysis identifies the crop coefficient (Kc) as the most decisive parameter in the modeling. When comparing the results with previous studies in the area, we concluded that the results obtained in this project have to be evaluated and compared with in situ data for validation.