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Timothy Eaton

Associate Professor

Science Building, Room E212
Phone: 718-997-3327

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Research Interests
I am a hydrologist with interests in both surface water and groundwater, modeling and field observations to understand hydrologic exchanges, and the use of shallow subsurface geophysics to characterize the shallow subsurface in urban settings.   I have also used borehole geophysics and measurements of temperature and specific conductance to infer processes in hydrologic systems.
Recent projects have investigated issues of water quality as it relates to discharge of combined sewer overflows (CSO) in coastal waters and the environmental impacts of hydraulic fracturing as it relates to energy policy decisions in New York State.  I have also collaborated in research on carbon assimilation in forests using eddy covariance methods to investigate ecosystem exchanges.   I am currently expanding my research into the hydrology and responses of wetlands to sealevel rise from global climate change, as well as the potential for constructed wetlands to treat CSO discharges in the New York City area.
With several grad students in conjunction with my field courses, I am currently studying temperature and water quality changes in the Alley Pond Park wetlands as a result of CSO discharges and tidal fluctuations.
·          CSO discharge impacts on wetlands hydrology, sediments and water quality
·         Environmental impacts, Marcellus shale gas hydrofracking and New York City water supply
·         Temperature sensing to track tidal exchanges in wetland systems (coming)
Teaching Philosophy and Interests

My teaching interests are natural resources and environment, surface and groundwater hydrology, shallow subsurface geophysics, and field methods in environmental sciences.

Courses taught

Undergraduate Classes
  • GEOL025 Natural Resources and the Environment
  • GEOL347 Introductory Hydrology
  • GEOL383 Groundwater Hydrology

Graduate Classes

  • GEOL 745 Hydrology
  • GEOL 746 Groundwater Hydrology
  • GEOL 761 Field Methods in Hydrology
  • GEOL 762 Shallow Subsurface Geophysics


Wei, S., C. Yi, G. Hendrey, T. Eaton, G. Rustic, S. Wang, H. Liu, N.Y. Krakauer, W. Wang, A.K. Desai, L. Montagnani, K.T. Paw U, M. Falk, A. Black, C. Bernhofer, T. Grunwald, T. Laruila, A. Cescatti, E. Moors, R. Bracho, and R. Valentini. 2014. Data-based perfect-deficit approach to understanding climate extremes and forest carbon assimilation capacity. Environmental Research Letters 9. doi: 10.1088/1748.9326/9/6/065002
Eaton, T.T., G.D. O'Mullan and A.A. Rouff. 2013. Assessing continuous contamination discharge from a combined sewer outfall (CSO) into a tidal wetland creek: bacteriological and heavy metals indicators.  Ann. of Env. Science 7: 79-92.
Eaton, T.T., 2013. Science-based decisionmaking on complex issues: Marcellus shale gas hydrofracking and New York City water supply.  Science of the Total Environment 461-462: 158-169
Rouff, A.A., T.T. Eaton and A. Lanzirotti. 2013. Heavy metal distribution in an urban wetland impacted by combined sewer overflow. Chemosphere 93: 2159-2154.
Eaton, T.T., 2012.  Estimating relative flows over time to an urban combined sewer outfall (CSO  from contaminant mixing.  GSA Abstracts w/Programs, Vol.44, No.2
Eaton, T.T. 2009. Engaging students and evaluating learning progress in an introductory environmental science course. Journal of Geoscience Education, 57(2) March issue

Eaton, T.T. and C. Yi. 2008. Hydroperiod and hydraulic loading for treatment potential in urban tidal wetlands. Hydrology and Earth System Science Discussions*, 6: 1-37

Eaton, T.T., C. Cranganu, and F. Nitsche. 2007. Resistivity profiling and GPR for characterization of urban fill and buried infrastructure. GSA Abstracts w/Programs, Vol.39, No.6

Eaton, T.T. 2007. Analytical estimates of hydraulic parameters for an urbanized estuary – Flushing Bay. Journal of Hydrology,347(1-2): 188-196, doi 10.1016/j.jhydrol.200709/018

Eaton, T.T., M.P. Anderson, and K.R. Bradbury. 2007. Fracture control of ground water flow and water chemistry in a rock aquitard. Ground Water 45, 601-615

Eaton, T.T. 2006. Hydrogeology – principles and practice. Invited book review. Ground Water 44(3): 326. doi: 10.1111/j.1745-6584.2006.00214.x

Cherry, J.A., B.L. Parker, K.R. Bradbury, T.T. Eaton, M.B. Gotkowitz, D.J. Hart, and M.A. Borchardt. 2006. Contaminant Transport Through Aquitards: A State of the Science Review, American Water Works Association Research Foundation Report 91133a, 126 p.

Bradbury K.R., M.B. Gotkowitz, D.J. Hart, T.T. Eaton, J.A. Cherry, B.L. Parker, M.A. Borchardt. 2006. Contaminant Transport Through Aquitards: Technical Guidance for Aquitard Assessment,American Water Works Association Research Foundation Report 91133b, 144 p.

Eaton, T.T. 2006. On the importance of geological heterogeneity for flow simulation. Sedimentary Geology 184(3-4): 187-201

Eaton, T.T. 2006. Heterogeneity in sedimentary aquifers: challenges for characterization and for flow modeling. Sedimentary Geology 184(3-4): 183-186

Eaton, T.T. and K.R. Bradbury. 2003. Hydraulic transience and the role of bedding fractures in a bedrock aquitard, southeastern Wisconsin, USA, Geophysical Research Letters 30(18). doi:10.1029/2003GL017913


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