摘要：Hydrological modeling of watershed represents a tool widely used to manage, assess and simulate water resources. The paper presents the use of mod el-based indicators as a pre-assessment tool for the characterization of the upper side of Teleajen River Basin, starting from Maneciu Dam to the confluence with Crasna River near Homoriciu village. The main purpose of this scientific work, was to predict the effect of land utilization and watershed conditions on the water quality, sediments, and nutrient loads with sufficient accuracy on this ungauged section of the river basin. The Geographic Information System (GIS) interface created for SWAT, called ArcSWAT was used to develop the watershed model. The software package was used to delineate the basin and its sub-components, The data layers were combined to obtain the model database. The model parameters were analyzed, ranked and adjusted for hydrologic modeling purposes. ArcSWAT model was chosen due to its versatility in tracking the movement and transformation of several forms of nitrogen and phosphorous. This model embedded within the ArcGIS system was evaluated by statistically analyzing the predicted sediments, nutrient loadings and organic load from and within the Teleajen River upper section, a watershed that is significantly impacted by agricultural, animal breeding and forestry operations. Predicted sediments loading in the selected watershed indicated a significant sediment transport from the watershed. Nitrates tend to reach higher loads in the second part of the year in contrast with nitrites, which showed the maximum values in the February-April period
关键词：watershed; SWAT model; GIS; water quality; nutrient loads
