A watershed is 3500 acres in area and has a mix of grassland, brush, and forest. The average annual rainfall is 42.89 inches per year. The average annual runoff is 1875 acre-feet. The recharge rate to a larger regional aquifer is 11.56 inches/year. A small spring discharges on average 2.79 inches/year. Determine the evapotranspiration (inches/year) from this watershed (0.01).