Welcome!

My research program is focused on sustainability science in water resources.  My work has focused on the evaluation of hydrologic interfaces and environmental tracer signals in the environment.  The implementation of this research agenda has involved the evaluation of highly localized systems and more broad scale watershed processes.  Please feel free to contact me with questions about my research program and the multi-disciplinary teams with which I participate.

University of Tennessee Research Partnerships

The Center for Environmental Biotechnology

Southeastern Water Resources Institute

Tennessee Water Resources Research Center

The Institute for a Secure and Sustainable Environment

Recent Journal Publications

Koirala, S.R., Gentry, R.W., Perfect, E., Schwartz, J., and Sayler, G.S. 2008. Temporal variation and persistence of bacteria in streams, Journal of Environmental Quality, 37(4):1559–1566, doi:10.2134/jeq2007.0310.

Koirala, S. R., E. Perfect, R. W. Gentry, and J. W. Kim.  2008. Effective saturated hydraulic conductivity of two-dimensional random multifractal fields, Water Resour. Res., 44, W08410, doi:10.1029/2007WR006199.

Ivey, S.S., Gentry, R.W., Larsen, D., and Anderson, J.L. 2008. Inverse application of age-distribution modeling using environmental tracers ³H/³He, ASCE Journal of Hydrologic Engineering, v13, n11, pp1002-1010.

Ivey, S.S., Gentry, R.W., Larsen, D., and Anderson, J.L. 2008. Case study of the sheahan wellfield using ³H/³He field data to determine localized leakage areas, ASCE Journal of Hydrologic Engineering, v13, n11, pp1011-1020.

Franklin, S.B., Kupfer, J.A., Pezeshki, R., Gentry, R.W., and Smith, R.D. 2009. Efficacy of the hydrogeomorphic model (HGM): A case study from western Tennessee, Ecological Indicators, v9, n2, pp267-283, doi:10.1016/j.ecolind.2008.05.004.

Bell, A., Layton, A., McKay, L.D., Williams, D., Gentry, R.W., and Sayler, G.S. 2009. Factors influencing the persistence of fecal Bacteroides in stream water, Journal of Environmental Quality, v38, n3, pp1224-1232, doi:10.2134/jeq2008.0258.

Franklin, S.B., Kupfer, J.A., Pezeshki, S.R., Gentry, R.W., and Smith, R.D. 2009. Complex effects of channelization and levee construction on western Tennessee floodplain forest function, Wetlands, v29, n2, p451-464.

Randy Gentry, Gary Sayler and Jie Zhuang in China near the Yellow Mountains.