Environmental Sciences

Environmental Sciences Experts

Greg Koltun

Unicorn College
United States Virgin Islands


Greg Koltun, The U.S geological survey Department of:Hydrology, Hydrologist Ohio-Kentucky-Indiana Water Science Center

Research Interest

hydrology hydraulics statistics loading calculation methods dye tracer studies


  • Huitger, C.A, Ostheimer, C.J., and Koltun, G.F., 2016, Hydrologic and hydraulic analyses for the Black Fork Mohican River Basin in and near Shelby, Ohio: U.S. Geological Survey Scientific Investigations Report 2015–5187, 39 p., 2 appendixe

  • 5818, https://doi.org/10.1016/j.ejrh.2017.08.006. Koltun, G.F., Nardi, M.R., and Shaffer, K.H., 2016, Estimation of upstream water use with Ohio’s StreamStats application: U.S. Geological Survey Scientific Investigations Report 2016–5077, 13 p.

  • Farmer, William F. and Koltun, G.F., 2017, Geospatial tools effectively estimate nonexceedance probabilities of daily streamflow at ungauged and intermittently gauged locations in Ohio, Journal of Hydrology: Regional Studies, Vol. 13, Pages 208-221, ISSN 2214-5818,

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