Scientific Journal Publications
Henri, C.V. and T. Harter, 2022. Denitrification in heterogeneous aquifers: Relevance of spatial variability and performance of homogenized parameters. Adv. in Water Resour., https://doi.org/10.1016/j.advwatres.2022.104168 (open access)
Edwards, E.C., C. Nelson, T. Harter, C. Bowles, X. Li, B. Lock, G.E. Fogg, B. S. Washburn, 2022. Potential effects on grouwdater quality associated with infiltrating stormwater through dry wells for aquifer recharge. J. Contam. Hydrol. 246, https://doi.org/10.1016/j.jconhyd.2022.103964 (open access)
Greenhalgh, S., K. Mueller, S. Thomas, M.L. Campbell, and T. Harter, 2022. Raising the voice of science in complex socio-political contexts: an assessment of contested water decisions. J. Env. Policy & Planning 24(2):242-260, https://doi.org/10.1080/1523908X.2021.2007762 (open access)
Kourakos, G. and T. Harter, 2021. Simulation of unconfined aquifer flow based on parallel adaptive mesh refinement. Water Resour. Res. 57(12), e2020WR029354, https://doi.org/10.1029/2020WR029354 (open access)
Green, C.T., K.M. Ransom, B.T. Nolan, L.Liao, and T. Harter, 2021. Machine learning predictions of mean ages of shallow well samples in the Great Lakes Basin, USA. J. Hydrology 603, 126908, https://doi.org/10.1016/j.jhydrol.2021.126908
Castaldo, G., A. Visser, G.E. Fogg, T. Harter, 2021. Effect of groundwater age and recharge source on nitrate concentrations in domestic wells in the San Joaquin Valley. Env. Sci. Technol. 55(4):2265-2275, doi:10.1021/acs.est.0c03071 (open access)
Waterhouse H., T. Broadhead, A. Massell, H. Dahlke, T. Harter, D. Mountjoy, 2021. Management considerations for protecting groundwater quality under agricultural managed aquifer recharge. Sustainable Conservation, Research Brief
Gurevich, H., S. Baram, T. Harter, 2021. Measuring nitrate leaching across the critical zone at the field to farm scale. Vadose Zone Journal, 20, e20094, doi:10.1002/vzj2.20094 (open access)
Henri, C.V., T. Harter, E. Diamantopoulos, 2021. Stochastic assessment of the effect of land-use change on nonpoint source-driven groundwater quality using an efficient scaling approach. Stochastic Environmental Research and Risk Assessment 35(5):959-970, doi:10.1007/s00477-020-01869-y (open access)
Miller, C.M.F., H. Waterhouse, T. Harter, J.G. Fadel, D. Meyer, 2020. Quantifying the uncertainty in nitrogen application and groundwater nitrate leaching in manure based cropping systems. Agricultural Systems 184, doi: 10.1016/j.agsy.2020.102877.
Bastani, M., T.Harter, 2020. Effects of upscaling temporal resolution on groundwater nitrate transport model performance at the regional management scale. Hydrogeology J., doi:10.1007/s10040-020-02133-x (open access)
Henri, C., T. Harter, 2020. On the conceptual complexity of non-point source management: Impact of spatial variability. Hydrol. and Earth Systems Sci, doi:10.5194/hess-24-1189-2020 (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.Contam.Hydrol. 226 (103521), 17p., 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)
Owen, D., A. Cantor, N. Green Nylen, T. Harter, and M. Kiparsky, 2019. California groundwater management, science-policy interfaces, and the legacies of artificial legal distinctions. Env. Res. Lett. 14(4). doi:10.1088/1748-9326/ab0751
Ransom, K.M., A.M. Bell, Q.E. Barber, G. Kourakos, and T.Harter, 2018. A Bayesian approach to infer nitrogen loading rates from crop and land-use types surrounding private wells in the Central Valley, California. Hydrol. Earth Syst. Sci., 22:2739-2758, 2018, doi:10.5194/hess-22-2739-2018.
Harter, T., K. Dzurella, G. Kourakos, A. Hollander, A. Bell, N. Santos, Q. Hart, A.King, J. Quinn, G. Lampinen, D. Liptzin, T. Rosenstock, M. Zhang, G.S. Pettygrove, and T. Tomich, 2017. Nitrogen Fertilizer Loading to Groundwater in the Central Valley. Final Report to the Fertilizer Research Education Program, Projects 11-0301 and 15-0454, California Department of Food and Agriculture and University of California Davis, 325p.
Ransom, K.M., and T. Harter, 2017. Groundwater nitrate sources and contamination in the Central Valley. California Water Blog, September 18, 2017.
Ransom, K.M., B.T. Nolan, J.A. Traum, C.C. Faunt, A.M. Bell, J.M. Gronberg, D.C. Wheeler, C.Z. Rosecrans, B.Jurgens, G.E. Schwarz, K. Belitz, S.M. Eberts, G. Kourakos, and T. Harter, 2017. A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA, Science of The Total Environment, Volumes 601–602 (1), p. 1160-1172, doi:10.1016/j.scitotenv.2017.05.192 (open access).
Baram, S., V. Couvreur, T. Harter, M. Read, P.H. Brown, M. Kandelous, D.R. Smart, and J.W. Hopmans, 2016. Estimating Nitrate Leaching to Groundwater from Orchards: Comparing Crop Nitrogen Excess, Deep Vadose Zone Data-Driven Estimates, and HYDRUS Modeling. Vadose Zone J. 15. doi:10.2136/vzj2016.07.0061.
Ransom, K. M., M. N. Grote, A. Deinhart, G. Eppich, C. Kendall, M. E. Sanborn, A. K. Souders, J. Wimpenny, Q.-Z. Yin, M. Young, and T. Harter, 2016. Bayesian nitrate source apportionment to individual groundwater wells in the Central Valley by use of elemental and isotopic tracers, Water Resour. Res., 52, 5577–5597, doi:10.1002/2015WR018523 (open access).
Geisseler, D., 2016. Nitrogen concentrations in harvested plant parts - a literature overview. Report to the Kings River Watershed Coalition and to the Central Valley Regional Water Board Irrigated Lands Regulatory Program, 157p.
Edwards, E. C., Harter, T., Fogg, G. E., Washburn, B., & Hamad, H. (2016). Assessing the Effectiveness of Drywells as Tools for Stormwater Management and Aquifer Recharge and Their Groundwater Contamination Potential. Journal of Hydrology 539:539-553, doi:10.1016/j.jhydrol.2016.05.059.
Baram S., V. Couvreur, T. Harter, M. Read, P.H. Brown, J.W. Hopmans, D.R. Smart, 2016. Assessment of orchard N losses to groundwater with a vadose zone monitoring network. Agricultural Water Management 172:83-95. doi:10.1016/j.agwat.2016.04.012
Tomich, T. et al, 2016. California Nitrogen Assessment. http://asi.ucdavis.edu/programs/sarep/research-initiatives/are/nutrient-mgmt/california-nitrogen-assessment
Harter, T., 2015. California's agricultural regions gear up to actively manage groundwater use and protection. California Agriculture 69(3):193-201, doi:10.3733/ca.E.v069n03p193 (open access)
Mayzelle, M. M., J. H. Viers, J. Medellin-Azuara, and T. Harter, 2015. Economic feasibility of irrigated agricultural land use buffers to reduce groundwater nitrate in rural drinking water sources. Water 7(1):12-37, doi: 10.3390/w7010012 (open access).
Dzurella, K.N., G. S. Pettygrove, A. Fryjoff-Hung, A. Hollander, and T. Harter, 2015. Potential to assess nitrate leaching vulnerability of irrigated cropland. J. Soil and Water Conservation 70(1):63-72, doi: 10.2489/jswc.70.1.63 (open access).