SWAT Literature Database for Peer-Reviewed Journal Articles

Title:SWAT model calibration results for different catchments sizes in Poland 
Authors:Ostojski, M.S., J. Niedbala, P. Orlinska, P. Wilk and J. Wrobel 
Journal:Journal of Environmental Quality 
Article ID: 
URL (non-DOI journals): 
Broad Application Category:hydrologic & pollutant 
Primary Application Category:calibration, sensitivity, and/or uncertainty analysis 
Secondary Application Category:nutrient cycling and transport 
Watershed Description:593.7 km^2 Gasawka, 2,766.8 km^2 Rega and 54,500 km^2 Warta in northwest western Poland 
Calibration Summary: 
Validation Summary: 
General Comments:This article is part of a JEQ special SWAT section. 
Abstract:The watershed model SWAT (Soil and Water Assessment Tool) can be used as a tool to implement the requirements of international agreements that Poland has ratified. Among these requirements are the establishment of catchment-based, rather than administrative-based, management plans and spatial information systems. Furthermore, Polish law requires that management of water resources should be based on catchment systems. This article explores the use of the SWAT model in the implementation of catchment-based water management in Poland. Specifically, the impacts of basin size on calibration and on the results of the simulation process were analyzed. SWAT was set up and calibrated for three different Polish watersheds of varying sizes: 1) Gąsawka, a small basin (over 593.7 km^2), 2) Rega, a medium sized basin (2766.8 km^2), and 3) Warta, a large basin (54,500 km^2) representing about 17.4% of Polish territory. The results indicated that the size of the catchment has an impact on the calibration process and simulation outputs. Several factors influenced by the size of the catchment affected the modeling results. Among these factors are: the number of measurement points within the basin and the length of the measuring period and data quality at checkpoints as determined by the position of the measuring station. It was concluded that the SWAT model is a suitable tool for the implementation of catchment-based water management in Poland regardless of watershed size.