The Soil Water Assessment Tool (SWAT) model was used to simulate the hydrologic response of a watershed in south-central Texas within the Honey Creek State Natural Area for the time period 2001 to 2010; the simulation was focused on simulating the hydrologic outcomes of brush management. Specifically a SWAT2012 (Arnold et al., 2012) model of the watershed was built using the ArcSWAT tool (Winchell et al., 2007). Included are the necessary files and processing scripts for users to recreate the Monte Carlo and global sensitivity analysis results presented in the publication. Note the actual outputs from the analyses are not included herein because of storage size limitations. The results of the SWAT modeling are presented in the publication "The importance of parameterization when simulating the hydrologic response of vegetative land-use change" by White, Stengel, Rendon and Banta (2017). Arnold,J.G., Moriasi, D.N., Gassman, P.W., Abbaspour, K.C., White, M.J., Srinivasan, Raghavan, Santhi,Chinnasamy, Harmel,R.D., Van Griensven, Ann, Van, M.W., Liew, et al. Swat—Model use, calibration, and validation. Transactions of the ASABE, v.55,no.4, 1491–1508, 2012 Winchell, M., Srinivasan, Raghavan, Di Luzio, M., and Arnold, J.G., ArcSWAT interface for swat2005 user's guide. Texas Agricultural Experiment Station and United States Department of Agriculture, Temple, TX, 2007.