Aplicación del modelo hidrológico SWAT a la cuenca del río Meca (Huelva, España)

Abstract

Acid mine drainage (AMD) is the main pollutant source in the Odiel river basin (SW Spain). Stream-flow data constitute a tool to assess the pollutant load transported by the drainage network, as well as to evaluate the possible impact of restoration measurements along the river. Due to the malfunctioning of the available stream-gauges and in order to sham the Odiel river behavior, a water model is being elaborated using the tool SWAT (Soil and Water Assessment Tool), developed by the USDA Agricultural Research Service. For the first stage of the project we have selected the Meca river watershed, a tributary of the Odiel river, which is regulated by the Sancho reservoir and whose daily contributions have been used to both calibrate and validate the model. Obtained results show a well adjustment for wetter years while for the drier ones higher differences between simulated and measured flows have been observed