摘要：The application of regionalization methods is one of the most important procedures for the estimation of thestreamflow discharge in ungauged rivers catchments and its automation can reduce both processing time and susceptibilityto errors. The Environmental Systems Research Institute (ESRI), in cooperation with the Center for Research in WaterResources at University of Texas (CRWR), has developed the ArcHydro toolset, a geospatial data model designed forhydrological models and used to accumulate attributes in the hydrographical net, among other functionalities. The presentpaper addresses the automation of the low flow index Q95 accumulation in the Doce River Basin by ArcHydro and theapplication of the regionalization method based on the proportionality of the ratio discharge per unit of drainage area. Theeffects of the reservoirs operation on water availability were computed automatically in this process and reliable resultstime savings were achieves.
