SWAT Literature Database for Peer-Reviewed Journal Articles

Title:
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Modeling of non-point source pollution in a Mediterranean drainage basin 
Authors:
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Gikas, G.D., T. Yiannakopoulou, and V.A. Tsihrintzis 
Year:2006 
Journal:Environmental Modeling & Assessment 
Volume:11(3) 
Pages:219-233 
Article ID: 
DOI:10.1007/s10666-005-9017-3 
URL (non-DOI journals): 
Model:SWAT 
Broad Application Category:hydrologic & pollutant 
Primary Application Category:pollutant cycling/loss and transport 
Secondary Application Category:none 
Watershed Description:
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1349 km^2 Vistonis Lagoon (northern Greece; lagoon connects to Aegean Sea); calib./valid. performed for 10 gauges in four major subwatersheds 
Calibration Summary:
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Daily? (May 1, 1998 - June 30, 1999) r2 values for 9 gauges (only 8 gauges for sediment): flow = .71 - .89 sediment = .40 - .98 (6 > .58) nitrate = .51 - .87 total P = .50 - .82 
Validation Summary:Daily? (Oct. 31, 1999 - Jan. 31, 2000) r2 values for 9 gauges (only 8 gauges for sediment): flow = .72 - .91 sediment = .34 - .98 (6 > .60) nitrate = .57 - .89 total P = .43 - .97 (8 > .60) 
General Comments:Comprehensive flow and pollutant calib./valid. Study was performed with SWAT for nine different gauges distributed throughtout the watershed. Model statistics used for evaluating the model output for slope, r2, and RMSE; extensive graphical comparisons also presented. The model output relative to measured values was judged to be good for the different indicators, especially for flow and sediment. Estimated flows, and sediment, nitrate, and total P loadings are given for 3 major subwatersheds to the lagoon for May 1998 to June 1990. Three crop scenarios were also performed in which only corn, wheat, or cotton were assumed grown, relative to baseline conditions which include a mix of all 3 crops, for the 160 km^2 Travos subwatershed. The nitrate losses changed by +64, 12.1, & -28% and total P losses change by +38.5, +30.8, and -23.1% in response to the only corn, wheat, or cotton scenarios. 
Language:English 
Keywords:SWAT model, calibration, verification, hydrograph, sediments, nutrients, management scenarios, Mediterranean drainage basin