SWAT Model Recalibration - Tetratech-ffx.com

Beaver Lake SWAT Modeling Baseline Analysis February 12, 2009Temperature data from 2003 through 2006 were refined in a manner similar to the precipitation data.There were several week- and month-long gaps in the Eureka and Fayetteville series that could not bepatched in a timely manner. For model development purposes, the Huntsville data were used to representthe Eureka Springs station and the Mountainburg data were used to represent the Fayetteville station.Figure 7 shows the monthly average minimum and maximum temperatures at the Huntsville andMountainburg stations for 2003 through 2006.50.040.0Temperature (C)30.020.010.00.0-10.02003 2003 2004 2004 2005 2005 2006 2006Year033544 M inimum Average M onthly Temperature 033544 M aximum Average M onthly Temperature035018 M inimum Average M onthly Temperature 035018 Maximum Average M onthly TemperatureFigure 7.Minimum and Maximum Temperatures Recorded at the Huntsville (033544) andMountainburg (035018) Weather Stations from 2003 to 20061.5 CALIBRATION DATACalibration and validation of the model for hydrology and water quality were conducted at three USGSgage locations on White River, Richland Creek, and War Eagle Creek ( Figure 8). These stations providelong runs of both flow gaging and water quality monitoring. Coincident flow and water quality data areessential for the evaluation of loads.12