At the core of the NPSAT tool is software for the simulation of a high-resolution steady-state flow solution in an unconfined aquifer.  Methods and example applications are described and documented in this paper (manuscript in preparation).

Bastani M., G. Kourakos, and T. Harter (in review), Comparison of the quasi streamline groundwater transport model with the fully 3D advection dispersion nonpoint source transport model at regional scale

Bastani, M., T.Harter, 2020. Effects of upscaling temporal resolution on groundwater nitrate transport model performance at the regional management scale. Hydrogeology J. (open access)

Henri, C., T. Harter (2020), On the conceptual complexity of non-point source management: Impact of spatial variability. Hydrol. and Earth Systems Science (in print), doi:10.5194/hess-2019-499 (open access)

Bastani M. and T. Harter (2019), Source area management practices as remediation tool to address groundwater nitrate pollution in drinking supply wells. J. of Contaminant Hydrology 226, 103521, doi:10.1016/j.jconhyd.2019.103521 (open access).

Henri, C. and T. Harter, 2019. Stochastic assessment of nonpoint source contamination: Joint impact of aquifer heterogeneity and well characteristics on management metrics. Water Resour. Res., doi:10.1029/2018WR024230 (open access)

Kourakos G., and T. Harter (2014), Parallel simulation of groundwater non-point source pollution using algebraic multigrid preconditioners. Computational Geosciences 18(5), 851-867, doi:10.1007/s10596-014-9430-2.

Kourakos, G. and T. Harter (2014), Vectorized simulation of groundwater flow and streamline transport. Environmental Modelling & Software 52:207-221, doi:10.1016/j.envsoft.2013.10.029.

Kourakos, G., Klein, F., Harter, T., (2012), A GIS-linked unit response function approach to stochastic groundwater nonpoint source pollution modeling, Models – Repositories of Knowledge, IAHS Publications (Red Book Series #355), 2013. 8 pages.

Kourakos, G., F.Klein, A.Cortis, and T.Harter (2012), A groundwater nonpoint source pollution modeling framework to evaluate long-term dynamics of pollutant exceedance probabilities in wells and other discharge locations, Water Resour. Res., 48, W00L13, doi:10.1029/2011WR010813.