SWAT Model Recalibration - Tetratech-ffx.com

Beaver Lake SWAT Modeling Baseline Analysis February 12, 2009phosphorus, so those monthly averages were only calculated for 2001 and later. This second set ofaveraging allowed for a representative analysis of point source pollutant loading for the 2006 land useover the model period.1.4 PRECIPITATION AND TEMPERATURE DATAThe previous version of the SWAT model contained precipitation and temperature data for four weatherstations from January 1995 through November 2004. Tetra Tech extended these data files throughDecember 2006. The NCDC First Order Summary of the Day observations were used to obtain dailyrecords of precipitation as well as minimum and maximum temperatures at each station. Tetra Tech alsoused the NCDC data to patch data that was missing in 2003 and 2004 in the original weather files. Table4 summarizes the weather stations used for the Beaver Lake SWAT model, and Figure 3 shows thelocations of these stations relative to the watershed.Table 4.Characteristics of Weather Stations Used to Drive the Beaver Lake SWAT ModelStation Name Station ID Elevation (m) Latitude LongitudeEureka Springs, 3 WNW 032356 433 36°25’N 93°48’WFayetteville Exp Station 032444 387 36°06’N 94°10’WHuntsville 1 SSW 033544 442 36°04’N 93°45’WMountainburg 2 NE 035018 242 35°39’N 94°09’W8