David Genereux

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Bio

Since 2000 I have been on the faculty at N.C. State University, where I carry out research and teaching in hydrogeology. Prior to that I was on the faculty at Florida International University (FIU) in Miami, where I held joint appointments between the Department of Geology and two research centers: the Drinking Water Research Center and the Southeast Environmental Research Center. During 2009-2014 I was the Associate Director for Research in the Water Resources Research Institute of the University of North Carolina, and during 2016-2018 served on the board of directors of the Consortium of Universities for the Advancement of Hydrologic Science, Inc. (CUAHSI), including a year as chair of the board in 2017.  I’ve been an associate editor for scientific journals (Water Resources Research and the Journal of Contaminant Hydrology), served on grant program panels at the National Science Foundation (NSF), Environmental Protection Agency (EPA), and Department of Agriculture (USDA), and served as both a member and chair of the Water Quality Technical Committee of the American Geophysical Union (AGU).

My research focuses on hydrogeology and the coupled fluxes of water and chemicals at the interface between groundwater and surface water, including agricultural nutrients, VOCs, and more recently GenX and related PFAS. Gas exchange at stream surfaces is also a focus area.  This work has been funded by NSF, USDA, DOE, and other sources, and most of it is accomplished through collaborative efforts with colleagues in related areas of engineering and geoscience. Most of my projects center around field and lab measurements, with use of models to tackle some questions, and the work has included a range of field settings: the Everglades, forested watersheds in Massachusetts and Tennessee, tropical rainforest in Costa Rica, the Nebraska Sand Hills, and agricultural and urban watersheds in North Carolina.

GRE general test is recommended for applicants in hydrogeology

Recent Publications (*student author  †post-doc author)

Solomon, K.D., E. Humphrey, T.E. Gilmore, D.P. Genereux, V. Zlotnik. 2020. An automated seepage meter for streams and lakes.  Water Resources Research,  http://doi.org/10.1029/2019WR026983

Stewart-Maddox*, N.S., M.D. Frisbee, C.L. Andronicos, D.P. Genereux, Z.P. Meyers.  2018.  Identifying the regional extent and geochemical evolution of interbasin groundwater flow using geochemical inverse modeling and ⁸⁷Sr/⁸⁶Sr ratios in a complex conglomeratic aquifer.  Chemical Geology 500: 20-29, http://doi.org/10.1016/j.chemgeo.2018.07.026

Osburn, C.L., D. Oviedo-Vargas^†, E. Barnett*, D. Dierick^†, S.F. Oberbauer, D.P. Genereux.  2018.  Regional groundwater and storms are hydrologic controls on the quality and export of dissolved organic matter in two tropical rainforest streams, Costa Rica.  Journal of Geophysical Research – Biogeosciences 123: 850-866,  http://doi.org/10.1002/2017JG003960

Koh, D.C., D.P. Genereux, G.W. Koh, K.S. Ko.  2017.  Relationship of groundwater geochemistry and flow to volcanic stratigraphy in basaltic aquifers affected by magmatic CO₂, Jeju Island, Korea.  Chemical Geology 467: 143-158,  http://doi.org/10.1016/j.chemgeo.2017.08.009

Gilmore*, T.E., D.P. Genereux, D.K. Solomon, K.M. Farrell, H. Mitasova.  2016.  Quantifying an aquifer nitrate budget and future nitrate discharge using field data from streambeds and well nests.  Water Resources Research, 52: 9046-9065,  https://doi.org/10.1002/2016WR018976

Oviedo-Vargas^†, D., D. Dierick^†, D.P. Genereux, S.F. Oberbauer.  2016.  Chamber measurements of high CO₂ emissions from a rainforest stream receiving old C-rich regional groundwater.  Biogeochemistry, 130: 69-83, doi 10.1007/s10533-016-0243-3

Heilweil, V., D.K. Solomon, T. Darrah, T.E. Gilmore*, and D.P. Genereux.  2016.  A gas-tracer experiment for evaluating the fate of methane in a coastal plain stream:  Degassing versus in-stream oxidation.  Environmental Science and Technology, 50(19): 10504–10511,  https://doi.org/10.1021/acs.est.6b02224

Burnette*, M., D.P. Genereux, F. Birgand.  2016.  In-situ falling-head test for hydraulic conductivity: evaluation in layered sediments of an analysis derived for homogenous sediments.  Journal of Hydrology, 539: 319-329, https://doi.org/10.1016/j.jhydrol.2016.05.030

Gilmore*, T.E., D.P. Genereux, D.K. Solomon, J.E. Solder*. 2016. Groundwater transit time distribution and mean from streambed sampling in an agricultural coastal plain watershed, North Carolina, USA. Water Resources Research, 52, 2025-2044, doi:10.1002/2015WR017600

Gilmore*, T.E., D.P. Genereux, D.K. Solomon, J.E. Solder*, B.A. Kimball, H. Mitasova, F. Birgand. 2016. Quantifying the fate of agricultural nitrogen in an unconfined aquifer: stream-based observations at three measurement scales. Water Resources Research, 52, 1961-1983, https://doi.org/10.1002/2015WR017599

Solder*, J.E., T.E. Gilmore*, D.P. Genereux, and D.K. Solomon. 2016. A tube seepage meter for in situ measurement of seepage rate and groundwater sampling. Groundwater, 54(4): 588-595,  https://doi.org/10.1111/gwat.12388

Solomon, D.K., T.E. Gilmore*, J. Solder*, B. Kimball, D.P. Genereux. 2015. Evaluating an unconfined aquifer by analysis of age-dating tracers in stream water. Water Resources Research, 51, 8883–8899, https://doi.org/10.1002/2015WR017602

Oviedo-Vargas†, D., D.P. Genereux, D. Dierick†, and S.F. Oberbauer. 2015. The effect of regional groundwater on carbon dioxide and methane emissions from a lowland rainforest stream in Costa Rica. Journal of Geophysical Research – Biogeosciences, 120, 2579-2596,  https://doi.org/10.1002/2015JG003009

Ganong*, C.N., G.E. Small, M. Ardón, W.H. McDowell, D.P. Genereux, J.H. Duff, C.M. Pringle. 2015. Interbasin flow of geothermally-modified groundwater stabilizes stream exports of biologically important solutes against variation in precipitation. Freshwater Science, 34(1): 276–286, https://doi.org/10.1086/679739

Zanon*, C., D.P. Genereux, and S.F. Oberbauer. 2014. Use of a watershed hydrologic model to estimate interbasin groundwater flow in a Costa Rican rainforest. Hydrological Processes, 28: 3670-3680, https:doi.org/10.1002/hyp.9917.

Genereux, D.P., L. Nagy*, C.L. Osburn, and S.F. Oberbauer. 2013. A connection to deep groundwater alters ecosystem carbon fluxes and budget: example from a Costa Rican rainforest. Geophysical Research Letters, 40(10): 2066-2070, https://doi.org/10.1002/grl.50423

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