Adjunct Associate Professor, Earth & Ocean Sciences
My research focuses on identifying and quantifying the factors that regulate groundwater and nutrient inputs to surface waters. I am particularly interested in understanding how anthropogenic disturbances affect streamflow processes and non-point source nutrient and bacteria inputs to shallow aquifers and surface waters. Current research includes investigation of nutrient inputs to Coastal Plain and Piedmont lakes, rivers, and estuaries, restoration of buried urban streams, nutrient exports from coastal package treatment plants, and development of geophysical approaches (electrical resistivity, ground penetrating radar, and electromagnetic induction) to characterize subsurface wastewater plumes in sensitive coastal watersheds.
Iverson, G, Humphrey, CP, O'Driscoll, MA, Sanderford, C, Jernigan, J, and Serozi, B. "Nutrient exports from watersheds with varying septic system densities in the North Carolina Piedmont." Journal of Environmental Management 211 (April 2018): 206-217.
Iverson, G, Humphrey, CP, Postma, MH, O’Driscoll, MA, Manda, AK, and Finley, A. "Influence of Sewered Versus Septic Systems on Watershed Exports of E. coli." Water, Air, & Soil Pollution 228, no. 7 (July 2017).
Humphrey, C, Serozi, B, Iverson, G, Jernigan, J, Pradhan, S, O'Driscoll, M, and Bean, E. "Phosphate treatment by onsite wastewater systems in nutrient-sensitive watersheds of North Carolina's Piedmont." Water science and technology : a journal of the International Association on Water Pollution Research 74, no. 7 (October 2016): 1527-1538.
Humphrey, CP, Jernigan, J, Iverson, G, Serozi, B, O’Driscoll, M, Pradhan, S, and Bean, E. "Field Evaluation of Nitrogen Treatment by Conventional and Single-Pass Sand Filter Onsite Wastewater Systems in the North Carolina Piedmont." Water, Air, & Soil Pollution 227, no. 8 (August 2016).
Iverson, G, O’Driscoll, MA, Humphrey, CP, Manda, AK, and Anderson-Evans, E. "Wastewater Nitrogen Contributions to Coastal Plain Watersheds, NC, USA." Water, Air, & Soil Pollution 226, no. 10 (October 2015).