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6 SSURGO database7 supplied with the SWAT model as assigned to areas defined by the NRCS soil series units8 that cover the model area. Vegetative cover used to compute ET within the SWAT model was defined by the USGS land cover database9. Climatic data for the SWAT model was used for the 4 km x 4 km grid cell of the national PRISM database10 centered on the property and comprised daily values of precipitation, and minimum and maximum daily temperature for the 42 year period from January 1, 1982, to December 31, 2023. Figure 6 shows the distribution of annual precipitation and groundwater recharge computed with the SWAT model. Mean annual precipitation is 47.06 inches and mean annual recharge is 12.06 inches. Figure 6 shows the annual distribution of recharge and the values for 1983 through 2023. Figure 6.-- Annual distribution and annual recharge computed with the SWAT model. The steady state watertable elevations shown in Figure 5 were computed using the mean annual recharge. To assess the values of hydraulic conductivity used for the model it was run with both wells pumping at an average of 25 gallons/minute. This assessment required a slight reduction of the hydraulic conductivity of the bedrock to 0.25 ft/day from the initial estimated value of 0.33 in Table 3 to reasonably reproduce the reported drawdowns in the wells when pumping. Figure 7 shows the computed steady state water drawdown with both wells pumping. The average of the modeled drawdown in the wells is 87 feet which is close to the reported values shown in Table 3 of 90 feet 7 https://www.nrcs.usda.gov/resources/data-and-reports/soil-survey-geographic-database-ssurgo 8 https://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx 9 https://www.usgs.gov/node/279743 10 https://prism.oregonstate.edu/ 126