Greg Jennings

Professor

Professor Emeritus

Dr. Gregory Jennings, P.E., joined NC State in 1990 as an Assistant Professor. He progressed through the academic ranks and was named Professor in 2001. Over his career at NC State Dr. Jennings made significant contributions in the areas of water quality, watershed management, stream restoration, and ecological engineering. He served as Water Quality Coordinator for the College of Agricultural and Life Sciences, in which role he coordinated interdisciplinary water quality educational and research programs. Dr. Jennings also led the development of the NCSU Stream Restoration Program, probably the pre-eminent program across the United States, that has educated both students and professionals through delivery of education programs based upon research conducted at NC State and elsewhere.

Dr. Jennings chaired 9 PhD and 21 Masters’ committees and served on graduate committees for 55 other students in programs across 5 universities. He developed or co-developed 4 courses in 2 programs in the Department of Biological and Agricultural Engineering in the areas of environmental and ecological engineering and implementation. Dr. Jennings has published 44 peer-reviewed journal articles and is lead author or co-author of 9 book chapters. He has served in several leadership roles in North Carolina Cooperative Extension including Neuse Education Team Coordinator and Watershed Education Network Coordinator. He was also a Governor’s appointee to the NC Environmental Management Commission and the NC Sedimentation Control Commission, and was a member of the NC DENR Science Advisory Committee. These appointments show the recognition of his programs at a high level. His leadership and committee work extended to the national level, serving our professional society, the American Society of Agricultural and Biological Engineers (ASABE), and committee work for the U.S. Department of Agriculture.

Dr. Jennings has been recognized as an ASABE Fellow, been awarded the G.B. Gunlogson Countryside Engineering Award through ASABE, and received the NC Association of Cooperative Extension Specialists Award, 4 times. Several team or program awards have been received in which he provided leadership.

Dr. Jennings is an authority on stream restoration practices and a sort after consultant by environmental engineering firms and contractors. Dr. Jennings is still involved with our stream restoration program and Bio & Ag training and workshops. Please see our workshop pages for courses

Noteworthy: Jennings  Gregory Jennings served as Water Quality Coordinator for the College of Agricultural and Life Sciences.

Research Description

Research interests: Stream restoration and water quality

Publications

Can rapid assessments predict the biotic condition of restored streams?
Doll, B., Jennings, G., Spooner, J., Penrose, D., Usset, J., Blackwell, J., & Fernandez, M. (2016), Water, 8(4).
Identifying watershed, landscape, and engineering design factors that influence the biotic condition of restored streams
Doll, B., Jennings, G., Spooner, J., Penrose, D., Usset, J., Blackwell, J., & Fernandez, M. (2016), Water, 8(4).
Evaluating the eco-geomorphological condition of restored streams using visual assessment and macroinvertebrate metrics
Doll, B. A., Jennings, G. D., Spooner, J., Penrose, D. L., & Usset, J. L. (2015), Journal of the American Water Resources Association, 51(1), 68–83.
Channel complexity and nitrate concentrations drive denitrification rates in urban restored and unrestored streams
Tuttle, A. K., McMillan, S. K., Gardner, A., & Jennings, G. D. (2014), Ecological Engineering, 73, 770–777.
Influence of restoration age and riparian vegetation on reach-scale nutrient retention in restored urban streams
McMillan, S. K., Tuttle, A. K., Jennings, G. D., & Gardner, A. (2014), Journal of the American Water Resources Association, 50(3), 626–638.
Increasing stream geomorphic stability using storm water control measures in a densely urbanized watershed
Tillinghast, E. D., Hunt, W. F., Jennings, G. D., & D’Arconte, P. (2012), Journal of Hydrologic Engineering, 17(12), 1381–1388.
Morphology characteristics of Southern Appalachian wilderness streams
Zink, J. M., Jennings, G. D., & Price, G. A. (2012), Journal of the American Water Resources Association, 48(4), 762–773.
Stormwater control measure (SCM) design standards to limit stream erosion for Piedmont North Carolina
Tillinghast, E. D., Hunt, W. F., & Jennings, G. D. (2011), Journal of Hydrology, 411(3-4), 185–196.
Analysis of functional traits in reconfigured channels: Implications for the bioassessment and disturbance of river restoration
Tullos, D. D., Penrose, D. L., Jennings, G. D., & Cope, W. G. (2009), Journal of the North American Benthological Society, 28(1), 80–92. https://doi.org/10.1899/07-122.1
Improving construction site runoff quality with fiber check dams and polyacrylamide
McLaughlin, R. A., King, S. E., & Jennings, G. D. (2009), Journal of Soil & Water Conservation, 64(2), 144–154. https://doi.org/10.2489/jswc.64.2.144
Water quality improvements using modified sediment control systems on construction sites
McLaughlin, R. A., Hayes, S. A., Clinton, D. L., McCaleb, M. S., & Jennings, G. D. (2009), Transactions of the ASABE, 52(6), 1859–1867. https://doi.org/10.13031/2013.29214
Afield study of green roof hydrologic and water quality performance
Hathaway, A. M., Hunt, W. F., & Jennings, G. D. (2008), Transactions of the ASABE, 51(1), 37–44.
Ammonia assessment from agriculture: US status and needs
Aneja, V. P., Blunden, J., James, K., Schlesinger, W. H., Knighton, R., Gilliam, W., … Cole, S. (2008), Journal of Environmental Quality, 37(2), 515–520. https://doi.org/10.2134/jeq2007.0002in
Evaluating the effectiveness of two stormwater wetlands in North Carolina
Line, D. E., Jennings, G. D., Shaffer, M. B., Calabria, J., & Hunt, W. F. (2008), Transactions of the ASABE, 51(2), 521–528.
Integrated practices for reducing sediment loss from Piedmont tobacco fields
Hazel, D. W., Franklin, E. C., Thomas, K. T., & Jennings, G. D. (2008), Journal of Soil & Water Conservation, 63(3), 143–152.
Workshop on Agricultural Air Quality: State of the science
Aneja, V. P., Blunden, J., Roelle, P. A., Schlesinger, W. H., Knighton, R., Niyogi, D., … Duke, C. S. (2008), Atmospheric Environment, 42(14), 3195–3208. https://doi.org/10.1016/j.atmosenv.2007.07.043
Development and application of a bioindicator for benthic habitat enhancement in the North Carolina Piedmont
Tullos, D. D., Penrose, D. L., & Jennings, G. D. (2006), Ecological Engineering, 27(3), 228–241.
Impact of large poultry operations on groundwater: Stable 15N isotopes of nitrate assessment
Showers, W. J., Williams, C. M., & Jennings, G. D. (2006), International Journal of Poultry Science, 5(4), 318. https://doi.org/10.3923/ijps.2006.318.329
Low-level nitrate export from confined dairy farming detected in North Carolina streams using delta N-15
Karr, J. D., Showers, W. J., & Jennings, G. D. (2003), Agriculture, Ecosystems & Environment, 95(1), 103–110. https://doi.org/10.1016/S0167-8809(02)00103-2
Pollutant export from various land uses in the upper Neuse River Basin
Line, D. E., White, N. M., Osmond, D. L., Jennings, G. D., & Mojonnier, C. B. (2002), Water Environment Research, 74(1), 100–108. https://doi.org/10.2175/106143002X139794
Nonpoint-source pollutant load reductions associated with livestock exclusion
Line, D. E., Harman, W. A., Jennings, G. D., Thompson, E. J., & Osmond, D. L. (2000), Journal of Environmental Quality, 29(6), 1882–1890. https://doi.org/10.2134/jeq2000.00472425002900060022x
Nonpoint sources
Line, D. E., Jennings, G. D., McLaughlin, R. A., Osmond, D. L., Harman, W. A., Lombardo, L. A., … Spooner, J. (1999), Water Environment Research, 71(5), 1054–1069. https://doi.org/10.2175/106143099X133965
A decision support system for water quality data augmentation: a case study
Endreny, T. E., & Jennings, G. D. (1999), Journal of the American Water Resources Association, 35(2), 363–378. https://doi.org/10.1111/j.1752-1688.1999.tb03596.x
Comparing sampling schemes for monitoring pollutant export from a dairy pasture
Line, D. E., Harman, W. A., & Jennings, G. D. (1998), Journal of the American Water Resources Association, 34(6), 1265–1273. https://doi.org/10.1111/j.1752-1688.1998.tb05430.x
Nonpoint sources
Line, D. E., McLaughlin, R. A., Osmond, D. L., Jennings, G. D., Harman, W. A., Lombardo, L. A., & Spooner, J. (1998), Water Environment Research, 70(4), 895–912. https://doi.org/10.2175/106143098X134514
Agricultural and urban stream restoration in the Long Creek watershed
Jennings, G. D., Harman, W. A., Line, D. E., & Mojonnier, C. B. (1997), Paper (American Society of Agricultural Engineers), (972140), 7.
McLendons Creek Watershed water quality assessment and management
Jennings, G. D., Harman, W. A., McLaughlin, R. A., Carter, T. A., Clinton, D. R., & Woerner, N. J. (1997), Paper (American Society of Agricultural Engineers), (972197), 6.
Nonpoint sources
Line, D. E., Osmond, D. L., Coffey, S. W., McLaughlin, R. A., Jennings, G. D., Gale, J. A., & Spooner, J. (1997), Water Environment Research, 69(4), 844–860. https://doi.org/10.2175/106143097X135055
Water quality of first flush runoff from 20 industrial sites
Line, D. E., Wu, J., Arnold, J. A., Jennings, G. D., & Rubin, R. A. (1997), Water Environment Research, 69(3), 305–310. https://doi.org/10.2175/106143097X125489

View all publications via NC State Libraries

Grants

Assessment of Compensatory Wetlands Mitigation in North Carolina
US Environmental Protection Agency (EPA)(5/01/12 - 8/31/13)
Evaluation of Stream Crossing Culverts to Assess Impacts on Stream Morphology and Aquatic Passage-Part II
NC Department of Transportation(8/16/12 - 8/15/13)
Analysis of Conservation Practice Effectiveness and Producer Adoption Behavior in Lake Jordan Watershed, NC
US Dept. of Agriculture (USDA)(9/01/11 - 8/31/16)
North Mecklenburg Park Stormwater Retrofit and Stream Restoration
NC Dept. of Natural & Cultural Resources formerly NC Dept of Env. & Natural Resources (DENR)(3/15/11 - 6/30/13)
Heath Dairy Livestock Exclusion and Stream Restoration
US Environmental Protection Agency (EPA)(1/01/11 - 9/30/14)
Stream Restoration Performance Assessment, 2011-2012
NC Dept. of Natural & Cultural Resources formerly NC Dept of Env. & Natural Resources (DENR)(4/01/11 - 9/30/13)
Western North Carolina Erosion, Sediment, and Turbidity Control Demonstration Site
NC Dept. of Natural & Cultural Resources formerly NC Dept of Env. & Natural Resources (DENR)(10/01/10 - 4/30/11)
Topographic Survey of the Landscape and a Design of the Stream Rehabilitation at the Tributary to the Hiawassee River Stream Rehabilitation Project Site
US Forest Service(4/08/10 - 9/30/10)
Water Quality Assessment of NC DFR Projects in Wayne, Durham, and Granville Counties
NC Dept. of Natural & Cultural Resources formerly NC Dept of Env. & Natural Resources (DENR)(7/01/10 - 6/30/11)
Bolin Creek Watershed Restoration Phase 2
US Environmental Protection Agency (EPA)(3/01/10 - 12/31/12)