Jeffrey Johnson

Extension Associate

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  • Weaver Administration Bldg 209
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Dr. Jeffrey Johnson, PE, is an Extension Associate working alongside Dr. Bill Hunt as a member of the Stormwater Engineering Group. He provides extension, research, project management, and engineering design for stormwater projects in North Carolina and works alongside collaborators on projects both nationally and internationally.

Dr. Johnson’s research is multifaceted and includes topics such as the impacts of aging on existing stormwater infrastructure, optimizing green infrastructure and stream restorations for nutrient and pathogen removal, and enhancing/improving flood mitigation. Dr. Johnson also leads the Stormwater Engineering Group’s efforts in testing proprietary New Stormwater Technologies (NEST) for approval via the NC Dept. of Environmental Quality’s NEST Program. He has also provided engineering design, bidding, and construction oversight on multiple stormwater control measures in North Carolina and Washington, D.C.

Dr. Johnson also teaches extension workshops alongside Dr. Hunt and the Stormwater Engineering Group throughout North Carolina on various topics in stormwater. Workshop topics include introduction to stormwater, research updates, inspection and maintenance, retrofit and rehabilitation, and guides to stormwater management through wet ponds and wetlands.

An avid Wolfpacker, Dr. Johnson holds undergraduate, master’s, and doctoral degrees from NC State University. In his free time, Dr. Johnson loves to travel the world with his wife, Traci, and hang out with their two dogs, Dash and Coco.


Ph.D. 2019

Biological and Agricultural Engineering

North Carolina State University

MBAE 2016

Biological and Agricultural Engineering

North Carolina State University

B.S. 2011

Business Administration

North Carolina State University


Hydrologic Modeling of Distributed Stormwater Control Measure Retrofit and Examination of Impact of Subcatchment Discretization in PCSWMM
Shaneyfelt, K. M., Johnson, J. P., & Hunt, W. F. (2021), JOURNAL OF SUSTAINABLE WATER IN THE BUILT ENVIRONMENT, 7(3).
Field Assessment of the Hydrologic Mitigation Performance of Three Aging Bioretention Cells
Flood Flow Frequency Analysis to Estimate Potential Floodplain Nitrogen Treatment during Overbank Flow Events in Urban Stream Restoration Projects
Doll, B. A., Kurki-Fox, J. J., Page, J. L., Nelson, N. G., & Johnson, J. P. (2020), Water, 12(6), 1568.
Hydrologic Performance of a Permeable Pavement and Stormwater Harvesting Treatment Train Stormwater Control Measure
Winston, R. J., Arend, K., Dorsey, J. D., Johnson, J. P., & Hunt, W. F. (2020), Journal of Sustainable Water in the Built Environment, 6(1), 04019011.
A Retrospective Comparison of Water Quality Treatment in a Bioretention Cell 16 Years Following Initial Analysis
Johnson, J., & Hunt, W. (2019), Sustainability, 11(7), 1945.
Insights from using in-situ ultraviolet–visible spectroscopy to assess nitrogen treatment and subsurface dynamics in a regenerative stormwater conveyance (RSC) system
Cizek, A. R., Johnson, J. P., Birgand, F., Hunt, W. F., & McLaughlin, R. A. (2019), Journal of Environmental Management, 252, 109656.
Evaluating the spatial distribution of pollutants and associated maintenance requirements in an 11 year-old bioretention cell in urban Charlotte, NC
Johnson, J. P., & Hunt, W. F. (2016), JOURNAL OF ENVIRONMENTAL MANAGEMENT, 184, 363–370.

View all publications via NC State Libraries


Reduction of Nutrient Loading to Greenfield Lake from Jumping Run Branch, Wilmington, N.C.
US Environmental Protection Agency (EPA)(6/01/20 - 9/30/22)
Brynn Marr Watershed Water Quality Improvement
US Environmental Protection Agency (EPA)(5/01/17 - 6/30/21)
Stormwater Monitoring of Two Stormtech Chamber Systems in Polk County, NC
Advanced Drainage Systems, Inc.(3/01/15 - 3/31/20)
Evaluating the nutrient removal capabilities of the Suntree Technologies Nutrient Separating Baffle Box
Suntree Technologies, Inc.(6/01/18 - 12/31/19)
Investigating Blue, Green, And Conventional Roof Stormwater Management At The University Of North Carolina At Chapel Hill
NC Clean Water Management Trust Fund(5/01/15 - 7/31/19)
Battle Grove Regenerative Storm-water Conveyance
US Environmental Protection Agency (EPA)(1/01/15 - 9/30/18)