RÉSUMÉ

IV: Honors and Awards:

• Member, National Academy of Engineering, Elected 1991.
• President of ASAE, 2001-2002
• Massey Ferguson Gold Medal Award, Am. Soc. of Agricultural and Biological Engineers, 2009
• Charles A. Black Award, Council Agricultural Science and Tech. (CAST), 2009
• O. Max Gardner Award, University of North Carolina System, 1997
• Alexander Quarles Holladay Medal for Excellence, N. C. State University, 1994.
• Distinguished Engineering Alumnus, Purdue University, 1997
• Alexander von Humboldt Foundation Award, 1997
• Member, Engineering Hall of Distinction, University of Kentucky, 1994.
• John Deere Gold Medal Award, ASAE, 1993.
• International Distinguished Achievement in Agriculture Award for 1999, presented by the International Society Gamma Sigma Delta
• D.G. Bowler Travel Prize to support travel and lectures on water table management in New Zealand, Massey University, New Zealand, October, 1993.
• Distinguished University Professor, appointed 1991.
• Alumni Distinguished Professor for Graduate Teaching, 1991.
  
• Subject of Profiles in North Carolina Ground Water, Ground Water of NC, 1991.
• Fellow, American Society of Agricultural Engineers, June 26, 1990.
• Hancor Soil and Water Engineering Award, ASAE, July, 1986.
• USDA Group Honor Award for Excellence (PLAT team), 2004
• United States Department of Agricultural Award for Superior Service, June, 1990.
• United States Department of Agriculture Award for Superior Service, June, 1986.
  Outstanding Alumnus of Kentucky Agricultural Engineering for 1984-85, Kentucky Omega Chapter of Alpha Epsilon, April, 1985.
• Appointed William Neal Reynolds Professor, July 1, 1984.
• Member, Drainage Hall of Fame, The Ohio State University, Columbus, 1984.     
• Alumni Research Award, North Carolina State University Alumni Association, 1983.
• ASAE Young Researcher Award, ASAE, 1981.
• Outstanding Young Scientist Award, N. C. State University Chapter of Sigma Xi, 1978.
• ASAE Paper Award 1998: “DRAINMOD-N: A nitrogen model for artificially drained soils”.  Transactions of the ASAE, Vol. 40(4):
• ASAE Honorable Mention Paper Award 1998: “Field Testing of DRAINMOD-N”, Transactions of the ASAE, vol.40(4):1077-1085.
• ASAE Blue Ribbon Awards for Extension Bulletins: 2 in 1989; 1 in 1986 (with R. O. Evans and R. E. Sneed).
  Honorable mention ASAE Paper Award 1988: “Two-stage weir control of subsurface drainage for water table management”, Trans. of the ASAE, 30(6):1713-1719.
• ASAE Paper Award 1984: “Energy and Water Requirements for Subirrigation vs. Sprinkler Irrigation”, Transactions of the ASAE, 25(1):126-183.
• ASAE Paper Award 1983:  “Incorporating Crop Needs into Drainage System Design”, Transactions of the ASAE, 25(3):623-629.
• ASAE Paper Award (Honorable Mention) 1982  “Water Management Model Evaluation for North Central Ohio”, Transactions of the ASAE, 24(2):922- 928.
• ASAE Paper Award 1980:  “Effect of Drain Diameter, Openings and Envelopes on Water Table Drawdown”, Transactions of the ASAE, 22(2):326- 333, 1979.
• ASAE Paper Award 1977:  “Determination of the Hydraulic Conductivity-Drainable Porosity Ratio from Water Table Measurements”, Transactions of the ASAE, 19(1):73-80, 1976.
• ASAE Paper Award 1974 “Experimental Evaluation of a Method for Determining Unsaturated Hydraulic Conductivity”, Transactions of the ASAE, 16(1):85-88, 1973.

Keynote and Special Invited Presentations by R. W. Skaggs

Effects of drainage design and management on agricultural production and drainage water quality in Egypt, Invited, Drainage Research Institute, Egypt Ministry of Irrigation, Cairo, Egypt, Jan. 5, 2010.

Effects of drainage water management on nitrogen losses to surface waters, Invited, International Forum on Water Resources and Sustainable Development, Wuhan, China, September 22-25, 2009

Determining hydrologic impacts of afforestation of grasslands. Invited,
XIII World Forestry Congress, Buenos Aries, Argentina, October 20, 2009.

Effects of drainage and forest management practices on hydraulic conductivity of wetland soils.  (Keynote) 13th World Peat Congress, June 8-13, 2008, Tullamore, Ireland.

Effect of controlled drainage on water and nitrogen balances in drained lands.  (Keynote)10th International Drainage Workshop of ICID Working Group on Drainage, July 8-12, 2008, Helsinki, Finland and Tallinn, Estonia: 195-208.

Agricultural Drainage: Impacts on Hydrology, Crop Production, and Water quality, Third Annual William E. Larson and Raymond R. Allmaras Lecture on Emerging Issues in Soil and Water, University of Minnesota, April 15, 2005

Methods for designing and managing drainage systems.  (Keynote), 1st National Salinity Engineering Conference, Perth Australia, Nov. 9-12, 2004.

Effect of drainage intensity on nitrogen loss to surface waters.  (Keynote), 8th International Drainage Symposium, Sacramento, CA, March 21-24, 2004.
                       
Integrated design of irrigation and drainage systems, (Keynote), Special Public Symposium, Rethinking irrigation in light of competing pressures, Brace Centre for Water Resources Management, McGill University, Montreal, Canada, Sept. 10, 2001.

Designing and managing drainage systems to satisfy water quality and agricultural objectives: effects of drain depth. (Keynote)  Scandinavian Conference on Drainage and Water Management in Agriculture: Benefits and Conflicts, Tallin, Estonia, May 30, 1999.

Designing and managing drainage systems to satisfy water quality and agricultural objectives. (Invited Seminar) World Bank, Washington, DC., May 13, 1999.

Hydrologic and water quality impacts of agricultural drainage systems, (Keynote) International Symposium on Drainage for Banana Production, EARTH University, Costa Rica, August, 1997.

Simulation modeling for designing drainage systems to satisfy multiple objectives (Keynote), 7th ICID International Drainage Workshop, Penang, Malaysia, November 17-21, 1997.

The effects of agricultural drainage practices on water quality (Keynote), Symposium on Agricultural Land Use vs Water Quality, Truro, Nova Scotia, Oct. 16,1995.

Predicting effects of water table management on loss of nitrogen from poorly drained soils, (Keynote) European Society of Agronomy International Workshop, Modeling the Fate of Agrochemicals and Fertilizers in the Environment, Venice, Italy, Mar. 3-5, 1994.

Drainage: Practices, research and implications for the environment, D.G. Bowler Memorial Lecture, Massey University, Palmerston North New Zealand, October 29, 1993.   

Drainage and water management modeling technology  (Keynote),  Sixth International Drainage Symposium (ASAE), Nashville, TN, December 13-15, 1992.

Environmental impacts of water table control  (Keynote),  International Conference on Subirrigation and Controlled Drainage, Lansing, MI, August 12-14, 1992.

Simulation of drainage system performance as affected by irrigation management (Keynote), International Symposium on Land Drainage for Salinity Control in Arid and Semi-arid Regions, Cairo, Egypt, Feb. 25-March 1, 1990.

The hydrology of wetlands: Methods for determining wetland hydrologic status, Spring 2002  Distinguished Lecture, Biological and Agricultural Engineering Department, Texas A&M University, College Station Texas, May 30, 2002.

Agricultural Engineering, Our History, Our Future, (Keynote address), Agricultural Equipment Technology Conference, Kansas City, Missouri, Feb. 20-23, 2002.

Prospects for Agricultural Engineering, (Keynote), Northeast Biological and Agricultural Engineering Conference, Quebec City, Quebec, June 16-19, 2002.

Modeling the performance of water management systems, Distinguished Lecture Series, Dept. of Biological and Agricultural Engineering, University of Georgia, Athens, March 5, 1998.

Design and management of drainage systems (Keynote), Fifth National Drainage Symposium, Chicago, IL, 1987.

V. Memberships in Scientific and Honorary Societies; Committees and Commissions:

A.     Registered Professional Engineer, NC, since 1974

B.     National Academy of Engineering, 1991-Present

1. Member, Peer committee, Section 12, 1992-1995; 2003-2006, Chair 2006.
2. National Research Council (NRC) Liaison Committee, Chair Section 12, 2006-2011
3. Committee on Membership, 2007-2010
4. Member NRC Committee on Characterization of Wetlands, 1993-1995
5. Member NRC Committee on Independent Scientific review of Everglades Restoration Process, 2009-2010.

C. American Society of Agricultural Engineers, 1967-Present

1. President, 2001-2002
2. Board of Trustees, 2000-2003
3. ASAE Foundation, 1998-2001, 2002
4. Board of Directors 1992-1994
5. Nominating Committee, 1994-1996
6. Chairman and Vice Chairman, Drainage Group, SW-23, 1983-1987
7. Chairman, SW-06, Paper Awards Committee, 1984-1985
8. Member, A-211, Research Committee, 1984-1986
9. Member, P-512, Monograph Committee 1985-1990
10. Associate Editor, Transactions of the ASAE, 1985-1987
11. Elected to the ASAE Nominating Committee 1979-1980
12. General Chairman, Third National Drainage Symposium (Sponsored by ASAE and   nine other professional societies and organizations), Chicago, IL.  1976
13. Drainage Research Committee-Vice Chairman 1977-1979, Chairman 1979-1982
14. Fourth National Drainage Symposium Planning Committee, 1982
15. Benefits of Agricultural Drainage Committee-Member 1977-Present.
16. Unsaturated Flow Committee-Vice Chairman 1969-1972, Chairman 1972-1975
17. Technical Session Chairman at ASAE Meetings-12 since 1970
18. North Carolina Section of ASAE Secretary-treasurer, 1973-1974; Honors and Awards Committee, 1975-1990; Vice-Chairman, 1982-83, Chairman, 1983-84.

D. National Technical Committee on Hydric Soils, Member, 1991-present
E. American Geophysical Union-Member, 1968-Present.
Technical Committee on Subsurface Water, 1975-1979.
F. American Society of Civil Engineers-Irrigation and Drainage Division - Nonmember Advisor to the Research Committee, 1979-1985.
G. Soil Conservation Society of America-Member, 1977-Present
H. oil Conservation Society of North Carolina, 1977-Present
Water Resources Committee, Member  1977-1978, Chairman  1979-1981
I. Appointed Member of the N.C. Water Resources Research Institute          
Technical Committee, 1974-1979 and 1979-1982, 1985-1988
J. Invited Participant in the National Workshop: Soil and Water Resources: Research Priorities for the Nation,@ Madison Wisconsin; Feb., 1981
K. Invited participant in ESCOP Strategic Planning Workshop, Research Priorities for the 1990's,@ Texas A&M University, Aug., 1990
L. Tau Beta Pi
M. Alpha Epsilon
N. Sigma Xi
O. Gamma Sigma Delta
P. Phi Kappa Phi
Q. Member, North Carolina Commission on the Superconducting Super Collider, Appointed by the Governor, 1988-1990
R. Member, Advisory Committee, South Carolina Sea Grant Consortium, Charleston, SC, 1985-1988
S. Editorial Board, Agricultural Water Management, Elsevier, The Netherlands
T. External Assessor for appointments of Associate and Full Professor, Faculty of Engineering, University of Agriculture, Malaysia; 1994-1996
U. Member, The Board of Advisors of the NCSU Graduate School, 1994-1999.

VI. Supervision of Research by Graduate and Post-Graduate Students

A. Master of Science (Chairman or Co-Chairman of Advisory Committee) - 24 completed

	Student	Date of Degree	Current Position
	Chad Poole	2006	BAE, N.C. State, Research Associate
	Brian Phillips	2006	BAE, N.C. State, Research Associate
	N. von Stackelberg	2005	Stantec, Salt Lake City, Utah
	J. Diggs	2004	Student Asbury Seminary
	L. Arnold	2003	Consulting Firm, Cary, NC
	J. Shelby	2002	PhD Student, N.C. State University
	T. Appelboom	2001	USDA, ARS Baton Rouge, LA
	W. Hunt	1997	Assistant Professor, BAE N.C. State University
	R. Merz	1996	Golder Associates, Brisbane, Australia
	A. Mohammad	1989	Assiciate Professor, Andalas Univ., Indonesia
	M. Wilsnack	1987	Senior Engineer, South FL Water Management
	M. S. Davenport	1986	District Chief, SC District, USGS, Columbia, SC
	R. M. Seymour	1986	Asst. Prof., Univ. of Georgia, Griffin, GA
	L. Alexander	1984	Rolta, Inc., Lakewood, Colorado
	G. Fipps	1984	Professor & Ext. Agr. Engr. Texas A&M
	M. C. Smith	1983	Research Leader, USDA-ARS, Beltsville, MD
	T. L. Foutz	1983	Professor., Univ. Georgia, Athens
	F. C. Massey	1981	Quaker Church, Baltimore, MD
	F. S. Mohammad	1978	Professor, King Fahd Univ., Saudi Arabia
	A. W. Badr	1978	Hydrologist, S. Carolina Dept. Water Resources
	S. Akparanta	1977	Ministry of Agriculture, Nigeria
	G. Gayle	1976	Professor and )former Head), Bio. Systems., Engineering NC A&T Univ., Greensboro NC
	A. K. Behnia	1975	Professor, Iranian University
	R. Bernal	1972	Consulting Engineer, Columbia

B. Ph.D. (Chairman or Co-Chairman of Advisory Committee and Director of Research) - 37 completed, 3 in process.

Student and Thesis Title Present Position

	Name & Date of Degree	Ph. D. Thesis Title	Present Position
	T. Appelboom	Effects of in stream processes on fate N and P in drainage canals of forested Watersheds	Research Engineer, USDA, ARS, Baton Rouge LA
	Mohamed A. Youssef 2004	Modeling nitrogen transport and transformations in high water table soils	Assistant Professor, North Carolina State University
	Johnny M. Grace III 2004	Forest operations impacts on soil water on poorly drained organic soil watersheds	Research Engineer, USDA Forest Service Auburn, AL
	Michael Burchell, 2003	Practices to reduce nitrate-N losses form drained agricultural lands	Assistant Professor, North Carolina State University
	Patricia K. Haan, 2000	Analysis of the effect of parameter uncertainty on DRAINMOD predictions for hydrology, yield and water quality	Associate Professor Texas A&M University College Station, TX
	Francois Birgand, 2000	Quantification and modeling Agricultural canals of the lower Coastal Plain	Assistant Professor, North Carolina State University
	Wan Luo,1999	Modification and testing of DRAINMOD for freezing thawing and snowmelt	Associate Professor, Xian Univ. of Tech., China
	Hany Salem, 1999	Modeling drainage rates Under varying water tables	DRI, Ministry of Irrigation, Egypt
	Agita Mohammad, 1997	Evaluation of surface runoff water quality, water quality predcition under different water table management practices	Asst. Professor, Andalas Univ., Indonesia
	Nabil Anwar, 1996	TFMOD, A transfer function model for drained soils	DRI, Ministry of Irrigation, Cairo Egypt
	V. M. McDaniel, 1995	Effects of high water table on corn roots	Engineer, St. Johns Water Management District, FL
	M. A. Brevé-Reyes, 1994	Movement and fate of nitrogen in artificially drained soils	Minister of Education, HONDURAS
	R. Munoz-Carpena	Modeling hydrology and sediment transport in vegetative filter strips	Assistant Professor University Florida
	H. Kandil, 1993	Development of a water management simulation of model for drained irrigated lands	Chief Engineer African Development Bank
	R. Susanto, 1993	Hydraulic head losses near agricultural drains	Professor, Indonesian University
	D. M. Amatya, 1993	Hydrologic modeling of drained forested lands	Research Hydrologist USDA Forest Service Charleston, SC
	C. L. Munster, 1992	Groundwater transport of pesticides from an agricultural field	Associate Professor, Texas A&M University
	R. O. Evan, 1991	Stress-day-index methods for predicting corn and soybean response to excess and deficient soil water conditions	Professor and Head of BAE Dept., NC State University
	G. M. Chescheir, 1991	Analysis of stormwater infiltration ponds on North Carolina barrier islands	Research Associate. Professor, N.C. State University
	E. McCarthy, 1990	Modification, testing and application of a hydrologic model for a forested watershed	Senior Hydrologist, Shapiro and Associates, Seattle, WA
	S. Workman, 1990	Development and application of a preferential flow model	Associate Professor, University of Kentucky
	W. Bentley, 1990	Effects of hydraulic conductivity and entrance resistance on drainage processes	Manager of Environmental Compliance, Verison Atlanta, GA
	K. Konyha, 1989	A medium scale watershed model: field hydrology coupled to open channel flow	Hydrologist, South Florida Water Mgt. Dist.
	J. Eigel, 1989	Application of body conforming grids Conforming grids to drainage problems	Consulting Engineer, Louisville, Ky.
	G. Fipps, 1988	Numerical solutions to the Richards equation in 2- and 3-dimensions	Professor & Extension Agr. Engr., Texas A&M, University
	K. Robbins,1988	Simulated climate inputs for DRAINMOD	Associate Professor, Louisiana State University
	J. E. Parsons, 1987 (deceased)	Development and application of a 3-D water management model	Professor, NC State University
	A. W. Badr, 1983	Development application of a simulation model for controlled drainage	Chief Hydrologist, South Carolina Dept. Water Resources
	R. Lagacé 1983	Predicting drain silting potential	Professor, Laval Univ., Quebec
	P. Purisinsit, 1982	Evaluation of two hydrologic models for the N. C. blacklands	Professor, Engr., Khan Kaen Univ. Thailand
	G. Gayle, 1982	A model for predicting effects of soil properties and drain spacing on sugarcane production in subtropics	Professor (former Head) N. C. A&T State university
	A. Shirmohammadi, 1982	Effects of water table depth and surface cover on infiltration in shallow water table soils	Professor, University of Maryland
	M. Aflatouni, 1982	Evapotranspiration in the presence of a water table	Professor, Isfahan Univ., Iran
	F. S. Mohammad, 1982	Effect of drain tube openings on water table drawdown	Professor, King Fahd University, Saudi Arabia
	S. Hardjoamidjojo, 1981	A model for predicting corn yield response to excessive and deficient soil water conditions	Dean, School of Agricultural Engineering, IPB Univ. Indonesia
	Y. K. Tang, 1977	Water movement in homogeneous and layered soils during drainage and subirrigation	Consulting Engineer, Philadelphia, PA
	L. G. Wells, 1975	Characterization of water movement in shallow water table soils	Professor, University of Kentucky

C. Post Graduate

• Application of DRAINMOD in Turkey, S. Cizikci, 1998-1999.
• Modeling Hydrology of Poorly Drained Watersheds, G. Fernandez, 1996-2000
• Hydrology of Drained Forest Soils,D. M. Amatya; 1994-1997.
• Hydrology and Water Quality of Wetlands, G. M. Chescheir, 1991-1995.
• DRAINMOD training for application in India, R. S. Pandey; 1991.
• Experimental and Computer Modeling Studies on Controlled Drainage and Subirrigation, C. Murugaboopathi, 1990-1991.
• Combining DRAINMOD, CREAMS/GLEAMS to Predict Effect of Water Management Practices on Erosion and Pesticide Losses, Dr. J. E. Parsons, 1987-1989.
• Evaluating DRAINMOD for drainage under irrigated conditions in Egypt, Dr. S. Abdel-Dayem, 1987-1988.
• Development of Design Methods and Criteria for Drainage and Subirrigation Systems in the North Carolina Coastal Plains, Abaldhassien N-Tabrizi, Post Doctorate Research Associate, 1979-1983.
• Land Drainage, Bhupal Singh, Post Graduate FAO Fellowship, 1979-1980.
• Determination of the Effects of Highway Construction on Ground water Resources on the North Carolina Outer Banks, S. G. Wardak, Post Doctorate Research Assistant, 1975-1977.

VII. PUBLICATIONS

Refereed Journal Articles

1. Beltran, B.J., D.M. Amatya, M. Jones, M.A. Youssef, T.J. Callahan, R.W. Skaggs, and J. E. Nettles. 2010.  Impacts of fertilization on water quality of a drained pine plantation: A worst case scenario. J. Environmental Quality, 39: 293-303.
2. Sun, G., A. Noormets, M.J. Gavazzi, S.G. McNulty, J.Chen, J.-C Domec, J.S. king, D.M. Amatya, and R.W. Skaggs. 2010. Energy and water balance of two contrasting loblolly pine plantations on the lower coastal plain of North Carolina, USA. Forest Ecology and Management, 259:1299-1310.
3. Salazar, O., I Wesstrom, M.A. Youssef, R.W. Skaggs and A. Joel. 2009.  Evaluation of the DRAINMOD-NII model for predicting nitrogen losses in southeast Sweden, Agricultural Water Management, 96:267-281.
4. Appelboom, T.W., G.M. Chescheir, R.W. Skaggs, J.W. Gilliam and D.M.Amatya.  2008.  Nitrogen balance for a plantation forest drainage canal on the North Carolina coastal plain.    Trans of ASABE, 51(4):1215-1233.
5. Skaggs, R.W. 2007. Criteria for calculating drain spacing and depth.  Trans ASABE 50(5):1657-1662.
6. von Stackelburg, N.O., G.M. Chescheir, R.W. Skaggs and D.M. Amatya. 2007. Simulation of the hydrologic effects of afforestation in the Tacuarembo river basin, Uruguay. Trans of the ASABE, 50(2):455-468.
7. Birgand, F., R.W. Skaggs, G.M. Chescheir, and J.W. Gilliam. 2007. Nitrogen removal in streams of agricultural catchments--a literature review. Critical reviews in environmental science and technology 37:381-487.
8. Fernandez, G, G.M. Chescheir, R.W. Skaggs and D.M. Amatya. 2007.  Application of DRAINMOD-GIS to a lower coastal plain watershed. Trans ASABE 50(2):439-447.
9. Bechtold, I., S. Kohne, M.A. Youssef, B. Lennartz and R.W. Skaggs. 2007. Simulating nitrogen leaching and turnover in a subsurface-drained grassland receiving animal manute in Northern Germany using DRAINMOD-NII, Ag Water Management 93:30-44.
10. Grace, J.M. III, R.W. Skaggs and D.K. Cassel. 2007.  Influence of thinning loblolly pine (Pinus taeda L.) on hydraulic properties of an organic soil.  Transactions of the ASABE 50(2): 517-522.
11. Caldwell, P.V., M.J. Vepraskas, R.W. Skaggs, and J.D. Gregory. 2007.  Simulating the hydrology of natural Carolina Bay wetlands.  Wetlands 27(4): 1112-1123.
12. Skaggs, R.W., M.A. Mohamed, and G.M. Chescheir.  2006. Drainage design coefficients for eastern United States. Agricultural Water Management 86: 40-49.
13. Burchell II, M.R. R. W. Skaggs, C.R. Lee, S. Broome, G.M. Chescheir, and J. Osborne. 2007.  Substrate organic matter to improve nitrate removal in surface-flow constructed wetlands.  JEQ 36:194-207.
14. Boyer, E.W., R. B. Alexander,  W. J. Parton, C. Li, K. Butterbach-Bahl,  S. D. Donner, R. W. Skaggs, and S.J. Del Grosso.  2006. Modeling denitrification in terrestrial and aquatic ecosystems at regional scales. Ecological Applications, 16(6):2123-2142.
15. Youssef, M.A., R. W. Skaggs, J.W. Gilliam and G.M. Chescheir. 2006.  Field evaluation of a model for predicting nitrogen losses from drained lands. JEQ, 35: 2026-2042.
16. Fernandez, G.P., G.M. Chescheir, R.W. Skaggs, and D.M. Amatya.  2006. DRAINMOD-GIS: A lumped parameter watershed scale drainage and water quality model. Agricultural Water Management 81:77-97.
17. Grace, J.M., III, R.W. Skaggs and D.K. Cassel. 2006. Soil physical changes associated with forest harvesting operations on an organic soil.  SSSAJ 70:503-509.
18. Grace, J.M., III, R.W. Skaggs and G.M. Chescheir. 2006.  Hydrologic and water quality effects of thinning loblolly pine.  Trans of ASABE 49(3):645-654.
19. Wang, X., M.A. Youssef, R.W. Skaggs, J.D. Atwood, and J.R. Frankenberger. 2005.  Sensitivity analysis of the nitrogen simulation model, DRAINMOD-NII. Trans. ASABE 48(6):2205-2212.
20. Shelby, J.D., G.M. Chescheir, and R.W. Skaggs. 2004. Hydrology and Water Quality Impacts of a Coastal Watershed in response to the Hurricanes and Related Storms of 1999. Trans of ASABE 48(6):2179-2188.
21. Youssef, M.A., R.W. Skaggs, G.M. Chescheir, and J.W. Gilliam.  2005.  The nitrogen simulation model, DRAINMOD-NII.  Trans ASABE, 48(2): 611-626.
22. Skaggs, R.W., G.M. Chescheir and B.D. Phillips. 2005.  Methods to determine lateral effect of a drainage ditch on wetland hydrology.  Trans. ASAE, 48(2):577-584.
23. Fernandez, G.P., G.M. Chescheir, R.W. Skaggs and D.M. Amatya.  2005.  Development and testing of watershed scale models for poorly drained soils. Trans. ASABE 48(2):639-652.
24. Burchell, M.R. II, R.W. Skaggs, G.M. Chescheir, J.W. Gilliam and L.A. Arnold.  2005. Shallow subsurface drains to reduce nitrate losses from drained agricultural lands. Trans. ASAE 48(3):1079-1089.
25. Skaggs, R.W., M.A. Youssef, G.M. Chescheir and J.W. Gilliam. 2005.  Effect of drainage intensity on nitrogen losses from drained lands.  Transactions of the ASABE 48(6):2169-2177.
26. Reyes, M.R., R.W. Skaggs and R.L. Bengtson. 2004.  GLEAMS-SWT with nutrients.  Transactions of the ASAE 47(1): 1-4.
27. Vepraskas, M.J., X. He, D.L. Lindbo, and R.W. Skaggs.  2004.  Calibrating hydric soil field indicators to long-term wetland hydrology.  Soil Sci. Soc. Am J. 68:1461-1469.
28. Amatya, D.M., G.M. Chescheir, G.P. Fernandez, R.W. Skaggs, and J.W. Gilliam. 2004. DRAINWAT-based Methods for Estimating Nitrogen Transport on Poorly Drained Watersheds.  Trans. of ASAE, Vol. 43(3):677-687.
29. Skaggs, R.W. and G.M. Chescheir III.  2003.  Effects of subsurface drain depth on nitrogen losses from drained lands.  Transactions of the ASAE 46(2): 237-244.
30. Haan, P.K. and R.W. Skaggs. 2003.  Effect of parameter uncertainity on DRAINMOD Predictions: I. Hydrology and yield.  Transactions of the ASAE 46(4): 1061-1067.
31. Haan, P.K. and R.W. Skaggs. 2003.  Effect of parameter uncertainity on DRAINMOD Predictions: II: Nitrogen losses. Transactions of the ASAE 46(4): 1069-1075.
32. Amatya, D.M., R.W. Skaggs, J.W. Gilliam, and J.H. Hughes.  2003.  Effects of orifice- weir outlet on hydrology and water quality of a forested watershed.  Southern Journal of Applied Forestry 27(2): 130-142.
33. He, X., M.J. Vepraskas, D.L. Linbo and R.W. Skaggs.  2003. A method to predict soil saturation frequency and duration from soil color.  Soil Science Society of America J. 67:961-969.
34. Chescheir, G.M., M.E. Lebo, D.M. Amatya, J. Hughes, J.W. Gilliam, R.W. Skaggs and R.B. Herrman. 2003.  Hydrology and water quality of forested lands in Eastern North Carolina.  Technical Bulletin 320, N.C. Agricultural Research Service, N.C. State University, Raleigh, 79 p.
35. He, X., M.J. Vepraskas and R.W. Skaggs. 2002. Adapting a drainage model to simulate water table levels in coastal plains soils.  Soil Science Society of America  Journal 66:1722-1731.
36. Fernandez, G.P., G.M. Chescheir, D.M. Amatya, and R.W. Skaggs. 2002.  WATGIS: A GIS-based lumped parameter water quality model, Trans. ASAE, Vol. 45(3):593-600.
37. El-Sadek, A., J. Feyen, R.W. Skaggs and J. Berlamont.  2002. Economics of nitrate losses from drained agricultural land. J. Environmental Engineering, 128(40):376-383.
38. Appelboom, T.W., G. M. Chescheir, R.W. Skaggs and D.L. Hesterberg. 2002. Management practices for sediment reduction from forest roads in the coastal plains.  Trans of the ASAE. 45(2):337-344.
39. Sun, G., S. G. McNulty, D.M. Amatya, R.W. Skaggs, L.W. Swift Jr. J.P. Shepard and H. Riekerk 2002.  A comparison of the watershed hydrology of coastal forested wetlands and  mountainous uplands in the Southern U.S. J. of Hydrology.263:92-104.
40. Luo, W., R.W. Skaggs, A. Madani, S. Cizikci and A. Mavi. 2001.  Predicting  field hydrology in cold conditions with DRAINMOD.  Transactions of the ASAE.44(4):825-834.
41. Amatya, D.M. and R. W. Skaggs. 2001.  Hydrologic modeling of a drained pine plantation on poorly drained soils.  Forest Science, 47(1):103-114.
42. Sun, G., S.G. McNulty, J.P. Shepard, D.M. Amatya, H. Riekerk, N.B. Comerford, W.  Skaggs and L. Swift, Jr. 2001.  Effects of timber management on the hydrology of wetland forests in the southern United States.  Forest Ecology and Management,  143:227-236.
43. Luo, W., R. W. Skaggs and G.M. Chescheir. 2000. DRAINMOD modifications for cold conditions.  Trans. of the ASAE, 43(6): 1569-1582.
44. Amatya, D.M., J.D. Gregory, and R.W. Skaggs. 2000. Effects of controlled drainage on storm event hydrology in a loblolly  plantation. J. of the AWRA, 36(1):175-190.
45. Sun, G., D.M. Amatya, S.G. McNulty, R.W. Skaggs, and J.H. Hughes. 2000. Climate change impacts on the hydrology and productivity of a pine plantation. J. of the AWRA, 36(2):367-374.
46. Borin, M.,  F. Morari, G. Bonaiti, M. Paasch and R. W. Skaggs. 2000. Analysis of DRAINMOD performances with different detail of soil input data in the Veneto region of Italy.  Agricultural Water Management, Vol. 42:259-272.
47. Amatya, D.M., J.D. Gregory and R.W. Skaggs.  2000. Effects of controlled drainage on storm event  hydrology in a loblolly pine plantation.  Water Resources Bulletin 36(1):175-190.
48. Amatya, D.M., Gilliam, J.W., Skaggs, R.W., Lebo, M. and Campbell, R.G.1998. Effects of controlled drainage on forest water quality. J. Environmental Quality, 27:923‑935.
49. Breve, M.A., R.W. Skaggs and J.W. Gilliam. 1998. Using the DRAINMOD-N model to study effects of drainage system design and management on crop productivity, profitability  and NO3-N losses in drainage water.  Agricultural Water Management, 35:227-243.
50. Amatya, D.M., Skaggs, R.W., and Gregory, J.D.  1997.  Evaluation of a watershed scale forest hydrologic model.  Agricultural Water Management, 32:239-258.
51. Giraud, F., Faure, J.B., Zimmer, D., Lefeuvre, and Skaggs, R.W.  1997.  Hydrologic modeling of a complex wetland.  J.Irrigation and Drainage Engr., Vol. 123(5):344-353.
52. Breve, M.A., Skaggs, R.W., Parsons, J.E., and Gilliam, J.W.  1997.  DRAINMOD-N, A nitrogen model for artificially drained soils.  Transactions of the ASAE, Vol. 40(4):1067-1075.
53. Breve, M.A., Skaggs, R.W., Gilliam, J.W., Parsons, J.E., Mohammad, A.T., Checheir, G.M., and Evans, R.O.  1997.  Field testing of DRAINMOD-N.  Transactions of the ASAE, Vol. 40(4):1077-1085.
54. Munster, C.L., Parsons, J.E., and Skaggs, R.W.  1997.  Using the personal computer for water table management data acquisition.  Applied Engineering in Agriculture, Vol. 13(2):227-234.
55. Amatya, D.M., R.W. Skaggs, J.D. Gregory and R.B. Herrmann.  1997.  Hydrology of a drained pocosin watershed.  Water Resources Bulletin,33(3):535-546.
56. Amatya, D.M., R.W. Skaggs and J.D. Gregory.  1997.  A watershed scale hydrologic model for drained forested land.  Journal of Agricultural Water Management 32:239-258.
57. Amatya, D.M., R.W. Skaggs and J.D. Gregory.  1996.  Effects of controlled drainage on hydrology of drained pine plantations in the North Carolina coastal plain.  Journal of Hydrology 181:211-232.
58. Amatya, D.M., R.W. Skaggs, and J.D. Gregory.  1996.  Closure to discussion on AComparison of methods for estimating REF-ET.@  Journal of Irrigation and Drainage 122(6):362-364.
59. Brevé, M.A., R.W. Skaggs and J.W. Gilliam.  1996.  Efectos del drenaje agricola en la hidrologia y calidad de aguas.  Aqua International 5(12):17-20.
60. Munster, C.L., R.W. Skaggs, and V.R. Pemmireddy.  1996.  Predicting the movement and fate of the pesticide Aldicarb.  Transactions of the ASAE 39(1):55-66.
61. Skaggs, R.W.  1996.  Book Review, Drainage Principles and Applications@ edited by H.P. Ritzema.  Agricultural Water Management 31(3):307-309.
62. Amatya, D.M., R.W. Skaggs and J.D. Gregory.  1995. Comparison of methods for estimating potential evapotranspiration.  Journal of Irrigation and Drainage 121(6):427-435.
63. Skaggs, R.W., M.A. Brevé, A.T. Mohammad, J.E. Parsons and J.W. Gilliam.  1995.  Simulation of drainage water quality with DRAINMOD.  Irrigation and Drainage Systems 9:259-277.
64. Evans, R.O., R.W. Skaggs and J.W. Gilliam.  1995. Controlled versus conventional drainage effects on water quality.  Journal of Irrigation and Drainage 121(4):271-276.
65. Kandil, H.M., R.W. Skaggs, S. Abdel-Dayem, and Y. Aiad.  1995.  DRAINMOD-S: Water management model for irrigated arid lands, crop yield and application.  Irrigation and Drainage Systems 9:239-258.
66. Munster, C.L., R.W. Skaggs, J.E. Parsons, R.O. Evans, J.W. Gilliam and E.W. Harmsen. 1995.  Aldicarb transport in the Coastal Plain of North Carolina.  Journal of Irrigation and Drainage 121(6):378-384.
67. Skaggs, R.W., M.A. Brevé and J.W. Gilliam.  1995.  Predicting effects of water table management on loss of nitrogen from poorly drained soils. European Journal of Agronomy 4(4):1-11.
68. Cox, J.W., D.J. McFarlane and R.W. Skaggs. 1994.  Field evaluation of DRAINMOD for predicting water-logging intensity and drain performance in South-Western Australia, Australian Journal of Soil Research 32:653-671.
69. Lorre, E., B. Lesaffre, and R. W. Skaggs.  1994.  Comparison of models for subsurface drainage in flat and sloping lands.  Journal of Irrigation and Drainage 120(2):166-177.
70. Munster, C. L., R. W. Skaggs, J. E. Parsons, R. O. Evans, J. W. Gilliam and M.A. Brevé.  1994. Simulating aldicarb transport in a drained field with subsurface drainage.  Transactions of the ASAE 37(6):1817-1824.
71. Skaggs, R. W., D. Amatya, R. O. Evans, and J. E. Parsons.  1994.  Characterization and evaluation of proposed hydrologic criteria for wetlands.  Journal of Soil and Water Conservation 49(5):501-510.
72. Skaggs, R. W., M. A. Brevé, and J. W. Gilliam.  1994.  Hydrologic and water quality impacts of agricultural drainage.  Critical Review in: Environmental Science and Technology 24(1):1-32.
73. Workman, S.R. and R.W. Skaggs. 1994.  Sensitivity of water management models to approaches for determining soil hydraulic properties.  Transactions of the ASAE 37(1):95-102.
74. Bentley, W. J. and R. W. Skaggs.  1993.  Changes in entry resistance of subsurface drains.  Journal of Irrigation and Drainage 119(3):584-599.
75. Chescheir, G. M., R. W. Skaggs, J. W. Gilliam and R. G. Broadhead. 1992.  Evaluation of wetland buffers for evaluating treatment of pumped agricultural drainage water. Transactions of the ASAE 35(1):175-182.
76. Kandil, H., C. T. Miller and R. W. Skaggs.  1992.  Modeling long-term solute transport in the unsaturated zone.  Water Resources Research 28(10):2799-2809.
77. Konyha, K. D., R. W. Skaggs and J. W. Gilliam.  1992.  Effects of drainage practices on hydrology.  Journal of Irrigation and Drainage 118(5):807-819.
78. Konyha, K. D. and R. W. Skaggs.  1992.  A coupled field hydrology-open channel flow model:  Theory.  Transactions of the ASAE 35(5):1431-1440.
79. McCarthy, E.J., J.W. Flewelling and R.W. Skaggs.  1992.  A hydrologic model for a drained forested watershed.  Journal of Irrigation and Drainage 118(2):242-255.
80. McCarthy, E.J. and R.W. Skaggs.  1992.  Evaluation of water management systems for a drained forest watershed.  Southern Journal of Applied Forestry 16(1):58-56.
81. Seymour, R. M., R. W. Skaggs and R. O. Evans.  1992.  Corn yield response to planting date.  Transactions of the ASAE 35(3):865-870.
82. Abdel-Dayem, S. and R. W. Skaggs.  1991.  Effect of residual entrapped air on predicting soil-water-crop relationships.  Water Science (Cairo, Egypt) 9:19-25.
83. Chescheir, G. M., J. W. Gilliam, R. W. Skaggs, and R. G. Broadhead.  1991.  Nutrient and sediment removal in forested wetlands receiving pumped agricultural drainage water.  Wetlands 11(1):87-103.
84. Chescheir, G. M., R. W. Skaggs, and J. W. Gilliam.  1991.  Hydrology of two forested wetlands that receive pumped agricultural drainage in eastern North Carolina.  Wetlands 11(1):29-53.
85. Evans, R.O. R.W. Skaggs and R.E. Sneed.  1991.  Stress day indices to relate corn and soybean yield to excess water stress.  Transactions of the ASAE 34(5):1997-2005.
86. Fipps, G. and R. W. Skaggs.  1991.  Simple methods for predicting flow to drains. Journal of Irrigation and Drainage 117(6):881-896.
87. McCarthy, E.J., R.W. Skaggs and P. Farnum.  1991.  Experimental determination of hydrologic components of a drained forest watershed.  Transactions of the ASAE 34(5):2031-2039.
88. McCarthy, E. J. and R. W. Skaggs.  1991.  A simplified model for predicting drainage rates for changing boundary conditions.  Transactions of the ASAE 34(2):443-448.
89. Parsons, J. E., R. W. Skaggs and  C. W. Doty.  1991.  Development and testing of a three-dimensional water management model (WATRCOM): Development.  Transactions of the ASAE 34(1):120-128.
90. Parsons, J.E., C.W. Doty and R.W. Skaggs.  1991.  Development and testing of a three-dimensional water management model (WATRCOM): Field  testing.  Transactions of the ASAE 34(4):1674-1682.
91. Skaggs, R. W., J. W. Gilliam and R. O. Evans.  1991.  A computer simulation study of pocosin hydrology.  Wetlands 11:399-416.
92. Skaggs, R. W. 1991. Modeling water table response to subirrigation and drainage.  Transactions of the ASAE 34(1):169-175.
93. Workman, S. R. and R. W. Skaggs.  1991.  Evaluation of the water management model PREFLO.  Transactions of the ASAE 34(5):2053-2059.
94. Davenport, M.S.  and R. W. Skaggs. 1990. Effects of drain envelope and slope on performance of a drainage-subirrigation system.  Transactions of the ASAE 33(2):493-500.
95. Evans, R. O., R. W. Skaggs and R. E. Sneed.  1990.  Normalized crop susceptibility factors for corn and soybean to excess water stress.  Transactions of the ASAE 33(4):1153-1161.
96. Fipps, G. and R. W. Skaggs.  1990.  Pond seepage in two and three dimensions.  Journal of Hydrology 117:133-151.
97. Tabrizi, M. H. N., J. Jamaluddin, S. A. Billings and R. W. Skaggs.  1990.  Use of identification techniques to develop a water table prediction model.  Transactions of the ASAE 33(6)1913-1918.
98. Workman, S. R. and R. W. Skaggs.  1990.  PREFLO: A water management model capable of simulating preferential flow.  Transactions of the ASAE 33(6):1939-1948.
99. Bentley, W., R. W. Skaggs and J. E. Parsons.  1989.  The effect of variation in hydraulic conductivity on water table drawdown.  North Carolina Research Service Technical Bulletin No. 288, 23 pp.
100. Evans, R. O. and R. W. Skaggs.  1989.  Design guidelines for water table management systems on Coastal Plains soils.  Applied Engineering in Agriculture 5(4):534-548.
101. Fipps, G. and R. W. Skaggs.  1989.  Influence of a slope on subsurface drainage of hillsides.  Water Resources Research 25(7):1717-1726.
102. Fipps, G. and R. W. Skaggs. 1989.  Modeling three-dimensional saturated and unsaturated flow using multigrids.  Transactions of the ASAE 32(4):1263-1268.
103. Meyer, L. D., R. W. Skaggs and T. A. Howell.  1989.  Challenges in soil and water research.  Transactions of the ASAE 32(3):887-893.
104. Parsons, J. E., R. W. Skaggs and C. W. Doty.  1989.  Simulation of controlled drainage in open ditch drainage systems.   Agricultural Water Management 18(4):301-316.
105. Ritter, W., F. J. Humenik and R. W. Skaggs.  1989.  Effect of irrigated agriculture on groundwater quality in the Appalachian and Northeastern states, Journal of Irrigation       and Drainage 115(5):807-821.
106. Workman, S. R. and R. W. Skaggs.  1989.  Comparison of DRAINMOD and SWATREN based on field data.  Transactions of the ASAE 32(6):1933-1938.
107.  Konyha, K. D., K. D. Robbins and R. W. Skaggs.  1988.  Evaluating peat mining hydrology using DRAINMOD.  Journal of Irrigation and Drainage 114(3):490-504.
108. Lagacé, R. and R. W. Skaggs.  1988.  Prediction of drain silting by soil  aggregate size analysis.  Transactions of the ASAE 31(3):796-803.
109. Wilsnack, M. M. and R. W. Skaggs.  1988.  Drainage to arch shaped drain tubes: Theory.  Transactions of the ASAE 31(6):1696-1702.
110. Alexander, L. and R. W. Skaggs.  1987.  Predicting unsaturated hydraulic conductivity from soil texture.  Journal of Irrigation and Drainage 113(2):184-197.
111. Anderson, S. H., D. K. Cassel and R. W. Skaggs.  1987.  Predicting upflux from a shallow water table and water stress in corn as stocastic processes of spatially variable soil hydraulic properties.  Journal of Soil Science Society of America 51(1):17-22.
112. Doty, C. W., J. E. Parsons and R. W. Skaggs.  1987.  Stream level control supplies irrigation water.  Transactions of the ASAE 30(4):1065-1070.
113. Fouss, J. L., R. W. Skaggs and J. S. Rogers.  1987.  Two-stage weir control for subsurface drainage in humid areas.  Transactions of the ASAE 30(6):1713-1719.
114. Gayle, G. A., R. W. Skaggs and C. E. Carter.  1987.  Predicting effects of  excessive soil water conditions on sugarcane yield.  Transactions of the ASAE 30(4):933-937.
115. Gayle, G. A., R. W. Skaggs and C. E. Carter.  1987.  Predicting effects of  excessive soil water conditions on sugarcane yield.  Transactions of the ASAE 30(4):933-937.
116. Parsons, J. E., and R. W. Skaggs and C. W. Doty.  1987.  Application of a three-dimensional water management model.  Transactions of the ASAE 30(4):960-968.
117. Alexander, L. and R. W. Skaggs.  1986.  Predicting unsaturated hydraulic conductivity from water characteristic data.  Transactions of the ASAE 29(1):176-184.
118. Deal, S.C., J. W. Gilliam, R. W. Skaggs and K.D. Konyha.  1986.  Prediction of nitrogen and phosphorus losses as related to agricultural drainage system design.  Agricultural Ecosystems and Environment 18:37-51.
119. Fipps, G., R. W. Skaggs and J. L. Nieber.  1986.  Drains as a boundary condition in finite elements.  Water Resources Research 22(11):1613- 1621.
120. Fipps, G. and R. W. Skaggs.  1986.  Effect of lateral seepage on water table response to a parallel drainage system.  Transactions of the ASAE 29(5):1278-1283.
121. Gilliam, J. W. and R. W. Skaggs.  1986.  Controlled agricultural drainage to maintain water quality.   Journal of Irrigation and Drainage, ASCE 112(3):254-263.
122. Skaggs, R. W. and A. Nassehzadeh-Tabrizi.  1986.  Design drainage rates for estimating optimum drain spacing.  Transactions of the ASAE 29(6):1631-1640.
123. Doty, C. W., J. E. Parsons, A. W. Badr, A. Nassehzadeh-Tabrizi and R. W. Skaggs. 1985.  Water table control for water resource projects on sandy soils.  Journal of Soil and Water Conservation 40(4):360-364.
124. Doty, C. W., J. E. Parsons, A. Nassehzadeh-Tabrizi, R. W. Skaggs and A. W. Badr. 1984.  Stream water levels affect field water tables and corn yields.  Transactions of the  ASAE 27(5):1300-1306.
125. Gayle, G. A., R. W. Skaggs and C. E. Carter.  1985.  Evaluation of a water management model for a Louisiana sugar cane field.  Journal of the American Society of Sugar Cane   Technologists 4:18-28.
126. Kano, Y., W. F. McClure and R. W. Skaggs.  1985.  A near infrared reflectance soil moisture meter.  Transactions of the ASAE 28(5):1852-1855.
127. Smith, M. C., R. W. Skaggs and J. E. Parsons.  1985.  Subirrigation system control for water use efficiency.  Transactions of the ASAE 28(2):489-496, 309.
128. Shirmohammadi, A. and R. W. Skaggs.  1985.  Predicting infiltration for shallow water table conditions.  Transactions of the ASAE 28(6):1829-1837.
129. Doty, C. W., J. E. Parsons, A. N. Tabrizi, R. W. Skaggs and A. W. Badr.  1984.  Evaluation of present conditions in a water resource project.  Transactions of the ASAE 27(5):1300-1306.
130. Karnoski, T. C., D. H. Willits and R. W. Skaggs.  1984.  Porous bulbs to control moisture in container media.  HortScience 19(3):393-395.
131. Mohammad, F. S.  and R. W. Skaggs.  1984.  Effect of drain tube openings on drainage and subirrigation.  Transactions of the ASAE 27(5):1455-1462.
132. Shirmohammadi, A. and R. W. Skaggs.  1984. Effect of soil surface conditions on infiltration for shallow water table soils.   Transactions of the ASAE 27(6):1780-1787.
133. Chang, A. C., R. W. Skaggs, L. F. Hermsmeier and W. R. Johnson.  1983.  Evaluation of a water management model for irrigated agriculture.  Transactions of the ASAE 26(2):412-418.
134. Massey, F. C., R. W. Skaggs and R. E. Sneed.  1983.  Energy and water requirements for subirrigation versus sprinkler irrigation.  Transactions of the ASAE 26(1):126-133.
135. Mohammad, F. S.  and R. W. Skaggs.  1983.  Drain tube opening effects on drain inflow.  Journal of Irrigation and Drainage 109(4):339- 404.
136. Nolte, B. H., N. R. Fausey and R. W. Skaggs.  1983.  Time available for field work on two Ohio soils.  Transactions of the ASAE 26(2):445- 451.
137. Hardjoamidjojo, S. and R. W. Skaggs and G. O. Schwab.  1982.  Corn yield response to excessive soil water conditions.  Transactions of the ASAE 25(4):922-927, 934.
138. Hardjoamidjojo, S. and R. W. Skaggs.  1982.  Predicting the effects of drainage systems on corn yields.  Agricultural Water Management 5:127-144.
139. Ravelo, C. J., D. L. Reddell, E. A. Hiler and R. W. Skaggs.  1982.  Incorporating crop needs into drainage system design.  Transactions of the ASAE 25(3):623-629.
140. Skaggs, R. W. and A. Nassehzadeh-Tabrizi.  1982.  Optimizing drainage for corn production.  Technical Bulletin No. 274, North Carolina Agricultural Research Service,    N. C. State University, Raleigh, N.C.  41 pp.
141. Skaggs, R. W.  1982.  Field evaluation of a water management simulation model.  Transactions of the ASAE 25(3):666-674.
142. Skaggs, R. W., A. N. Tabrizi and G. R. Foster.  1982.  Subsurface drainage effects on erosion.  Journal of Soil and Water Conservation 37(3):167-172.
143. Skaggs, R. W., S. Hardjoamidjojo, E. H. Wiser and E. A. Hiler.  1982.  Simulation of crop response to surface and subsurface drainage systems.  Transactions of the ASAE 25(6):1673-1678.
144. Skaggs, R. W. and A. Nassehzadeh-Tabrizi.  1982.  Design and drainage systems for land treatment of wastewater.  ASCE, Journal of the Irrigation and Drainage Division 108(IR3):196-211.
145. Sanders, D. C., W. C. Porter, R. W. Skaggs and D. M. Scheirer.  1981.  Growth, development and root quality of sweet potato as influenced by soil warming.  HortScience 16(4):537-539.
146. Skaggs, R. W. and J. W. Gilliam.  1981.  Effect of drainage system design and operation on nitrate transport.  Transactions of the ASAE 24(4):929-934.
147. Skaggs, R. W., N.R. Fausey and B. N. Nolte.  1981.  Water management model  evaluation for North Central Ohio.  Transactions of the ASAE 24(4):922-928.
148. Skaggs, R. W.  1981.  Water movement factors important to design and operation of subirrigation systems.  Transactions of the ASAE 24(6):1553-1561.
149. Akparanta, S. E., R. W. Skaggs and D. C. Sanders.  1980.  Drainage requirements for sweet potato at harvest.  Journal of American Society for Horticultural Science 105(3):447-451.
150. Skaggs, R. W.  1980.  Combination surface-subsurface drainage systems for humid regions.  ASCE, Journal of Irrigation and Drainage Division 106(IR4):265-283.
151. Tang, Y. K. and R. W. Skaggs.  1980.  Drain depth and subirrigation in layered soils.  ASCE, Journal of Irrigation and Drainage Division 106(IR2):113-122.
152. Skaggs, R. W.  1980.  A water management model for artificially drained soils.  Technical Bulletin No. 267, North Carolina Agricultural Research Service, N. C. State University, Raleigh, NC, 54 pp.
153. Gilliam, J. W., R. W. Skaggs and S. B. Weed.  1979.  Drainage control to diminish nitrogen loss from agricultural fields.  Journal of Environmental Quality 8(1):137-142.
154. Skaggs, R. W. and Y. K. Tang.  1979.  Effects of drain diameter, openings and envelopes on water table drawdown.  Transactions of the ASAE 22(2):326-333.
155. Gayle, G. and R. W. Skaggs.  1978.  Surface storage on bedded cultivated lands. Transactions of the ASAE 21(1)101-104, 109.
156. Skaggs, R. W.  1978.  Effect of drain tube openings on water table drawdown.  ASCE, Journal of Irrigation and Drainage Division 104(IR1):13-21.
157. Skaggs, R. W., L. G. Wells and S. R. Ghate.  1978.  Predicted and measured drainable porosities for field soils.  Transactions of the ASAE 21(3):522-528.
158. Tang, Y. K. and R. W. Skaggs.  1978.  Subsurface drainage in soils with high hydraulic conductivity layers.  Transactions of the ASAE 21(3):515-521.
159. Tang, Y. K. and R. W. Skaggs.  1977.  Experimental evaluation of theoretical solutions for subsurface drainage and irrigation.  Water Resources Research 13(6):957-965.
160. Wells, L. G. and R. W. Skaggs.  1977.  Vertical drainage of field cores. Transactions of the ASAE 20(1):79-84.
161. Skaggs, R. W.  1976.  Determination of the hydraulic conductivity-drainable porosity ratio from water table measurements.  Transactions of the ASAE 19(1):73-80.
162. Skaggs, R. W., C. R. Willey and D. C. Sanders.  1976.  Use of waste heat for soil warming in North Carolina.  Transactions of the ASAE 19(1):159-167.
163. Skaggs, R. W. and Y. K. Tang.  1976.  Saturated and unsaturated flow to parallel drains.  ASCE, Journal of Irrigation and Drainage Division 102(IR2):221-238.
164. Wells, L. G. and R. W. Skaggs.  1976.  Upward water movement in field cores. Transactions of the ASAE 19(2):275-283.
165. Amerman, C. R., A. Klute, R. W. Skaggs and R. E. Smith.  1975. Soil Water.  1971- 1974 U.S. National Report of the International Union of Geodesy and Geophysic 13(3):451-454, 496-505.
166. Daniels, R. B., J. W. Gilliam, E. E. Gamble and R. W. Skaggs.  1975.  Nitrogen movement in a shallow aquifer system on the North Carolina Coastal Plain.  Water Resources Bulletin, American Water Res. Assoc. 11(6):1121-1130.
167. Humenik, F. J., M. R. Overcash, R. W. Skaggs and L. F. McEver.  1975. Transformations of swine wastewater in laboratory soil profiles.  Transactions of the ASAE 18(6):11-30-1134.
168. Skaggs, R. W.  1975.  Drawdown solutions for simultaneous drainage and ET.  ASCE, Journal of Irrigation and Drainage Division 101(IR4):279-291.
169. Skaggs, R. W.  1974.  The effect of surface drainage on water table response to rainfall.  Transactions of the ASAE 17(3):406-411.
170. Kriz, G. J. and R. W. Skaggs.  1973.  Water management using subsurface drains. Journal of Soil and Water Conservation 28(5):216-218.
171. Skaggs, R. W., E. J. Monke and L. F. Huggins.  1973.   Experimental evaluation of a method for determining unsaturated hydraulic conductivity.  Transactions of the ASAE     16(1):85-88.
172. Skaggs, R.W., G.J. Kriz and Reyaldo Bernal.  1973.  Field evaluation of transient drain spacing equations.  Transactions of the ASAE 16(3):590-595.
173. Skaggs, R. W. 1973.  Water table movement during subirrigation.  Transactions of the ASAE 16(5):988-933.
174. Skaggs, R. W., G. J. Kriz and R. Bernal.  1972.  Irrigation through subsurface drains. ASCE, Journal of the Irrigation and Drainage Division 98(IR3):363-373.
175. Skaggs, R. W., E. J. Monke and L. F. Huggins.  1971.  An approximate method for defining the hydraulic conductivity-pressure potential relationship for unsaturated soils. Transactions of the ASAE 14(1):130-133.
176. Skaggs, R. W., L. F. Huggins, E. J. Monke and G. R. Foster.  1969.  Experimental evaluation of infiltration equations.  Transactions of the ASAE 12(6):822-828.
177. Skaggs, R. W. and E. M. Smith.  1968.  Apparent thermal conductivity of soil as related to soil porosity.  Transactions of the ASAE 11(4):504-507.
178. Skaggs, R. W., L. F. Huggins and E. J. Monke.  1968.  An aerodynamic method for sizing sands and other granular materials. Proceedings of the Indiana Academy of Science 77:377-388.
179. Smith, E. M., R. W. Skaggs and J. H. Casada.  1968.  Potential field for heat transfer in soil covered by different plastic mulches.  Trans of the ASAE 11(4):546-548.
180. Casada, J. H., S. W. Smith and R. W. Skaggs.  1966.  Physical properties of burley tobacco as related to harvester design.  Trans of the ASAE 9(5):678-684.

B. Books, Chapters, and Published Conference Proceedings

1. Skaggs, R.W. and M.A. Youssef. 2009. Effects of drainage water management on    nitrogen losses to surface waters.  P 54-70 in Proceedings of International Forum on Water Resources and Sustainable Development, Wuhan University, Wuhan, China.
2. Chescheir, G.M., R.W. Skaggs, and Amatya, D.M.  2009.  Quantifying the Hydrologic Impacts of Afforestation in Uruguay: A Paired Watershed Study.  Proc. XIII World Forestry Congress, Buenos Aries, Argentina. http://www.cfm2009.org/es/programapost/ resumenes/uploads/Quantifying_FD.pdf
3. Skaggs, R.W., G.M. Chescheir, D.M. Amatya and J.D. Diggs. 2008. Effects of drainage and forest management practices on hydraulic conductivity of wetland soils.  Keynote paper, Proceedings of the 13th World Peat Congress, Tullamore, Ireland.
4. Skaggs, R.W. and M.A. Youssef. 2008.  Effect of controlled drainage on water and nitrogen balances in drained lands.  Keynote paper, Proceedings of 10th International Drainage Workshop of ICID Working Group on Drainage, Helsinki, Finland and Tallinn, Estonia: 195-208.
5. Strock, J.S., M.A. Youssef, K.A. Oquist, G.R. Sands, R.W. Skaggs. 2008. Use of DRAINMOD-NII to predict nitrogen losses under conventional and organic farming practices in Minnesota, USA. Proceedings of 10th International Drainage Workshop of ICID Working Group on Drainage, Helsinki, Finland and Tallinn, Estonia: 15-20.
6. Chescheir, G.M., R.W. Skaggs, and D.M. Amatya.  2008. Hydrologic impacts of converting grassland to managed forestland in Uruguay. In: E.W. Tollner and A. Saleh, Eds, 21st Century Watershed Technology: Improving Water Quality and Environment; Proceedings of the 29 March – 3 April 2008 Conference, Concepcion, Chile,ASABE Publication Number 701P0208cd, ASABE, St. Joseph, MI. 49085-9659.
7. Chescheir, G.M., D.M. Amatya, and R.W. Skaggs.  2008.  Hydrology of a natural hardwood forested wetland.  In: C. Farrell and J. Feehan, Eds.  After Wise Use – The Future of Peatlands: Proceedings of the 13th International Peat Congress, Tullamore, Ireland, 8 – 13 June 2008.  International Peat Society, Jyväskylä, Finland.  pp. 468-471.
8. Amatya, D.M., K. Hyunwoo, G.M. Chescheir, R.W. Skaggs and J.E. Nettles.  2008.  Hydrologic effects of size and location of harvesting on a large drained pine forest on organic soils.  In: C. Farrell and J. Feehan, Eds.  After Wise Use – The Future of Peatlands: Proceedings of the 13th International Peat Congress, Tullamore, Ireland, 8 – 13 June 2008.  International Peat Society, Jyväskylä, Finland.  pp. 463-467.
9. Skaggs, R.W., D.M. Amatya, G.M. Chescheir, C.D. Blanton, and J.W. Gilliam.  2006. Effect of drainage and management practices on hydrology of pine plantation. P 3-14 in Proc., Hydrology of Forested Wetlands, ASABE, 2950 Niles rd, St. Joseph, MI 49085-9659
10. Phillips, B.D., R.W. Skaggs and G.M. Chescheir.  2006. Determination of lateral effect of a drainage ditch on wetland hydrology for two field sites.   P 292-301 in Proc., Hydrology of Forested Wetlands, ASABE, 2950 Niles rd, St. Joseph, MI 49085-9659
11. Amatya, D.M., R.W. Skaggs, C.D. Blanton, and J.W. Gilliam. 2006. Hydrology and water quality of a drained loblolly pine plantation in Coastal North Carolina.. P 15-26 in Proc., Hydrology of Forested Wetlands, ASABE, 2950 Niles rd, St. Joseph, MI 49085-9659.
12. Grace, J.M., III and R. W. Skaggs.  2006. Water balance of drained plantation watersheds in North Carolina.  P 58-67 in Proc., Hydrology of Forested Wetlands, ASABE, 2950 Niles rd, St. Joseph, MI 49085-9659.
13. Appelboom, T.W., G.M. Chescheir, R.W. Skaggs, J.W. Gilliam and D. Amatya. 2006. Temperature coefficient for modeling denitrification in surface water sediments using the mass transfer coefficient.  P 199-207 in Proc., Hydrology of Forested Wetlands, ASABE, 2950 Niles rd, St. Joseph, MI 49085-9659.
14. Birgand, F., T.W. Appelboom, G.M. Chescheir, R.W. Skaggs and J.W. Gilliam. 2006. Evaluation of time proportional sampling strategies for estimating annual nutrient fluxes at the outlets of coastal plains watersheds.  P 208-217 in Proc., Hydrology of Forested Wetlands, ASABE, 2950 Niles rd, St. Joseph, MI 49085-9659.
15. Caldwell, P.V., J.D. Gregory, R.L. Huffman, R.W. Skaggs, and M.J. Vepraskas.  2006.  Characterization of the long-term hydrologic requirements of four Carolina Bay plant Communities.  P 365-376 in Proc., Hydrology of Forested Wetlands, ASABE, 2950 Niles rd, St. Joseph, MI 49085-9659.
16. Amatya, D.M., G. Sun, R.W. Skaggs, G.M. Chescheir and J.E. Nettles. 2006. Hydrologic effects of global climate change on a large drained pine forest. P383-394 in Proc., Hydrology of Forested Wetlands, ASABE, 2950 Niles rd, St. Joseph, MI 49085-9659.
17. Amatya, D.M., R.W. Skaggs, C.D. Blanton, and J.W. Gilliam. 2006. Hydrologic and water quality effects of harvesting and regeneration of a drained pine forest.  P537-549 in Proc., Hydrology of Forested Wetlands, ASABE, 2950 Niles Rd, St. Joseph, MI 49085-9659.
18. DeForest, J.L., G. Sun, A. Noormets, J. Chen, S. McNulty, M. Gavazzi, D.M. Amatya, and R.W. Skaggs.  2006.  Carbon and water fluxes in a drained coastal clearcut and a pine plantation in eastern North Carolina. P586-597 in Proc., Hydrology of Forested Wetlands, ASABE, 2950 Niles Rd, St. Joseph, MI 49085-9659.
19. Grace, J.M.,III, and R.W. Skaggs.2006. Water balance on drained plantation watersheds in North Carolina.  Proceedings of Intern. Conf., Hydrology and Management of Forested Wetlands@, New Bern, NC, ASABE, St. Joseph, MI.
20. Skaggs, R.W. and M.A. Youssef. 2005.  Effect of climate on drainage requirements for corn production.  In M. Kavios (ed), “Pertti Vakkilainen 60”:124-131, WSBookwell Oy Porvoo, Finland.
21. Skaggs, R.W., R.O. Evans, and G.M. Chescheir. 2004.  Simple methods for predicting annual subsurface drainage and surface runoff from drained soils, P 376-376 In R.A. Cooke (Ed.), Drainage VIII, Proceedings of the Eighth International Drainage Symposium, ASAE, St. Joseph, MI 49085-9659.
22. Evans, R.O. and R.W. Skaggs. 2004. Development of controlled drainage as a BMP in North Carolina. P 1-15 In R.A. Cooke (Ed.), Drainage VIII, Proceedings of the Eighth International Drainage Symposium, ASAE, St. Joseph, MI 49085-9659.
23. Youssef, M.A., R.W. Skaggs, G.M. Chescheir, and J.W. Gilliam. 2004. Field testing of the nitrogen model DRAINMOD-NII, for North Carolina soils.  P171-180 In R.A. Cooke (Ed.), Drainage VIII, Proceedings of the Eighth International Drainage Symposium, ASAE, St. Joseph, MI 49085-9659.
24. Fernandez, G., G.M. Chescheir, R.W. Skaggs, and D.M. Amatya. 2004. Comparison of DRAINMOD based watershed scale models. P 281-290 In R.A. Cooke (Ed.), Drainage VIII, Proceedings of the Eighth International Drainage Symposium, ASAE, St. Joseph, MI 49085-9659.
25. Chescheir, G.M, G. Fernandez, R.W. Skaggs and D.M. Amatya. 2004. Application of watershed scale models to predict nitrogen loading from coastal plains watersheds.  P291-301 In R.A. Cooke (Ed.), Drainage VIII, Proceedings of the Eighth International Drainage Symposium, ASAE, St. Joseph, MI 49085.
26. Cizikci, S., B.Sonmez, K. Avci, I. Ersoz, N. Ozer, and R.W. Skaggs.  2004. Field evaluation and testing of DRAINMOD in Turkey. P 302-310 In R.A. Cooke (Ed.), Drainage VIII, Proceedings of the Eighth International Drainage Symposium, ASAE, St. Joseph, MI 49085-9659.
27. Skaggs, R.W., M.A. Youssef, G.M. Chescheir and J.W. Gilliam. 2004.  Effect of drainage design on nitrogen losses from drained lands.  In  M.S. Altinakar, S.S.Y. Wang, K.P. Holz. and M. Kawahara (eds.) Proc. of the 6th Internat Conf. on Hydro-Science and Engineering, Brisbane, Australia, May 31-June 3.
28. Skaggs, R.W., G.M. Chescheir, G.P. Fernandez, and D.M. Amatya. 2004. Effects of Land Use on the Hydrology of Drained Coastal Plain Watersheds. In  M.S. Altinakar, S.S.Y. Wang, K.P. Holz. and M. Kawahara (eds.) Proc. of the 6th Int=l Conf. on Hydro-Science and Engineering, Brisbane, Australia, May 31-June 3.
29. Skaggs, R.W., G.M. Chescheir, G. Fernandez and D.M. Amatya.  2003.  Watershed models for predicting nitrogen loads from artificially drained lands.  Proceedings of  the Conference, Total Maximum Daily Load, Environmental Regulations II, Albuquerque, NM, Nov. 8-12.  ASAE, St. Joseph, MI: 442-452.
30. D.M. Amatya, G.Sun, C.C. Trettin and R.W. Skaggs.  2003. Long term forest hydrologic monitoring in coastal Carolinas.  Proceedings of First Interagency Conference on Research in Watersheds, Phenoix, AR, Oct. 27-30, USDA-ARS : 279-285.
31. Skaggs, R.W. Integrated design of irrigation and drainage systems.  2001. Proceedings of a Special Public Symposium, Rethinking irrigation in light of competing pressures, Brace Centre for Water Resources Management, McGill University, Montreal, Canada, Sept. 10: 83-95.
32. Appelboom, T.W G.M. Chescheir, R.W. Skaggs, and D.L Hesterberg. 2001.  Evaluating forest road management practices for reducing sediment production and transport from forested watersheds. In: Soil Erosion Research for the 21st Century, A.C. Ascough and D.C. Flanagan (eds)  Honolulu, Hawaii, January 3-5.  ASAE, St Joseph, MI. pp.171-174.
33.  Skaggs, R.W. and J. van Schilfgaarde. (eds).  1999.   Drainage For Agriculture. Monograph No.38, American Society of Agronomy, Madison, WI, 1328 pp.
34. Skaggs, R.W.  1999.  Drainage simulation models.  In Skaggs and van Schilfgaarde (eds), Drainage for Agriculture, Monograph No.38, American Society of Agronomy, Madison, WI: 469-500.
35. Skaggs, R.W. 1999.  Water table management: Subirrigation and controlled drainage.  In Skaggs and van Schilfgaarde (eds), Drainage for Agriculture, Monograph No. 38, American Society of Agronomy, Madison, WI: 695-718.
36. Skaggs, R.W. and G.M. Chescheir. 1999.  Application of simulation models.  In Skaggs and van Schilfgaarde (eds), Drainage for Agriculture, Monograph No. 38, American Society of Agronomy, Madison, WI: 537-564.
37. Skaggs, R.W. and J. van Schilfgaarde.  1999.  Introduction.   In Skaggs and van Schilfgaarde (eds), Drainage for Agriculture, Monograph, American Society of Agronomy, Madison, WI: 3-10.
38. Sun, Ge, Amatya, D.M., McNulty, S.G., Skaggs, R.W. and Hughes, J.H. 1999.  Potential impact of climate change on the hydrology and productivity of a drained loblolly pine plantation in North Carolina. In D.B. Adams (ed.), Proceedings of Speciality Conference, Potential Consequences of Climate Variability and Change to Water Resources of the United States, American Water Resources Association; p403-408
39. Birgand, F, Chescheir, G.M., Skaggs, R.W., and Gilliam, J.W. 1999.Quantification and effects of in-stream processes in the ditches and canals of the Lower Coastal Plain of North Carolina. In K.W. King, ed., Proceedings of the Mini-Conference, Advances in Water Quality Modeling, Toronto, Canada.  ASAE, St. Joseph, MI:45-50.
40. Amatya, D.M., Chescheir, G.M., Fernandez, G.P., Skaggs, R.W. 1999. Testing of a watershed scale hydrologic/water quality model for poorly drained soils. In K.W. King, ed., Proceedings of the Mini-Conference, Advances in Water Quality Modeling, Toronto, Canada.  ASAE, St. Joseph, MI:33-39.
41. Fernandez, G.P., Chescheir, G.M., Amatya, D.M., Skaggs, R.W. 1999.  GIS-based water quality lumped parameter model. In K.W. King, ed., Proceedings of the Mini-Conference, Advances in Water Quality Modeling, Toronto, Canada.  ASAE, St. Joseph, MI:65-70.
42. Fernandez, G.P., Skaggs, R.W., Chescheir, G.M. and Amatya, D.M. 1999.  Watershed scale GIS based lumped parameter water quality model.  In, Amusy, L. SantosPeriera and M. Fritsch, Proceedings of 2nd Inter-Regional Conference on Environment-Water, A Emerging Technologies for Sustainable Land Use and Water Management@, Presses Polytechniques et Universitaries Romandes, Lausanne, Switzerland, paper 7.2, 14 pp.
43. Salem, H.E., and Skaggs, R.W.. 1998. Predicting drainage rates under varying water table conditions. .In L.C. Brown (Ed.) Drainage in the 21st Century, Proc. 7th Intern. Drainage Symposium, ASAE,St. Joe., MI:168 175.
44. Fernandez, G.P., Chescheir, G.M. and Skaggs, R.W. 1998. DRAINMOD 5.0: A Windows version that considers crop yield, nitrogen and salinity. In L.C. Brown (Ed.) Drainage in the 21stCentury, Proc. 7th Intern. Drainage Symposium, ASAE, St. Joe., MI:220 226.
45. Amatya, D.M, Chescheir, G.M., Skaggs, R.W., Fernandez, G.P. and Birgand, F. 1998.Evaluation of DRAINMOD based watershed scale model. In L.C. Brown (Ed.) Drainage in the 21st Century, Proc. 7th Intern. Drainage Symposium, ASAE, St. Joe., MI:211 219.
46. Merz, R.D. and Skaggs, R.W. 1998. Application of DRAINMOD S to determine drainage design criteria for irrigated semi arid lands.  In L.C. Brown (Ed.) Drainage in the 21st Century, Proc. 7th Intern. Drainage Symposium, ASAE, St. Joe., MI:347 354.
47. Chescheir, G.M., D.M. Amatya, G.P. Fernandez,  R.W. Skaggs, and J.W. Gilliam.  1998.  Monitoring and modeling the hydrology and water quality of a lower coastal plain watershed. In: Watershed Management: Moving from Theory to Implementation.  Water Environment Federation, Alexandria VA.  pp. 215-222.
48. Crozier,C.R., J.W. Gilliam, R.W. Skaggs, R.O. Evans, and G.M. Chescheir.  1998. Water and N management effects on grain yields at the Tidewater Research Station.  Soil Science Society of North Carolina Proceedings, Vol. XLI.
49. Amatya, D.M., G.M. Chescheir, and R.W. Skaggs. 1998. Evaluation of Methods used in Estimating Outflow Rates in the Lower Coastal Watersheds. In: Proc. of the 1998 ASCE Intl Water Resources Engrg. Conference, August 1998, Memphis, TN, ed. (S.R. Abt), pp:850-856.
50. Skaggs, R.W. and Breve, M. A. 1997.  Hydrologic and water quality impacts of agricultural drainage systems. In M. A. Breve (Ed.) Memoria del Simposio Internacional sobre riego y Drenaje en Banano.  Escuela de Agricultura de la Region Tropical Humeda (EARTH):127-141.
51. Amatya, D.M. and R.W. Skaggs. 1997. Predicting effects of an orfice-weir structure at the outlet of a drained pine forest.  Proc. Application of Emerging Technology on Hydrology Research, ASAE, St. Joe, MI, pp: 149-152.   
52. Skaggs, R.W. 1997. Simulation modeling for designing drainage systems to satisfy multiple objectives. Proc. 7th ICID International Drainage Workshop, Malaysian National Committee on Irrigation and Drainage (MANCID), Vol. 1:K3-1-K3-17.
53. Chescheir, G.M, D.M. Amatya, G. Fernandez, R.W. Skaggs, and J.W.Gilliam.  1997.  Impacts of Land Use and Management Practices on the Water Quality of a Lower Coastal Plain Watershed.  Managing the Albemarle Pamlico Sounds: Today's Accomplishments / Tomorrow's Challenges, June 5 & 6 1997, New Bern, NC.  
54. Amatya, D.M., J.W. Gilliam, and R.W. Skaggs.  Quality of Water from Drained Managed Plantations in North Carolina Coastal Plains. Proceedings of Solutions: A Technical Conference on Water Quality, North Carolina State University, March, 1996, pp. 130-134.
55. Chescheir, G.M., R.W. Skaggs, J.W. Gilliam, D.M. Amatya, F. Birgand, G. Fernandez and R. Mikkelsen.  Cumulative Impacts of Land Use and Water Management Practices on Water Quality in Coastal Watersheds. Proceedings of Solutions: A Technical Conference on Water Quality, North Carolina State University, March, 1996, pp. 140-144.
56. Hunt, W.F., R.W. Skaggs, GM. Chescheir and D.M. Amatya.  Determination of Wetlands Using Reference Wetland Simulations. Proceedings of Solutions: A Technical Conference on Water Quality, North Carolina State University, March, 1996, pp. 135-139. 
57. Skaggs, R.W., J.W. Gilliam and R.O. Evans.  Hydrology and drainage water quality in the North Carolina Coastal Plain.  Proceedings of Solutions: A Technical Conference on Water Quality, North Carolina State University, March, 1996, pp. 48-52.
58. Xu, L., H. Salem, G.M. Chescheir, J.W. Gilliam, and R.W. Skaggs. The Effect of Water Table Management Practices on Nutrient Losses. Proceedings of Solutions: A Technical Conference on Water Quality, North Carolina State University, March, 1996, pp. 106-110.
59. Amatya, D.M., Chescheir, G.M., and Skaggs, R.W.  1995.  Hydrologic Effects of Wetland Location and Size in an Agricultural Landscape.  In: K.L. Campbell (ed.) Versatility of Wetlands in the Agricultural Landscape.  American Society of Agricultural Engineers, St Joseph, MI.  pp. 477-488.
60. Amatya, D.M., R.W. Skaggs, and J.D. Gregory.  1995.  A Watershed Scale Hydrologic Model For Drained Forested Lands. In: Proc. of the 1995 ASCE International Watershed Management Symposium, August, 1995, pp. 73-82.
61. Chescheir, G.M., Skaggs, R.W., Gilliam, J.W., and Evans, R.O.  1995.  Effects of Water Table Management on Water Quality.  In: Clean Water-Clean Environment-21st Century (Volume III Practices, Systems, and Adoptions. American Society of Agricultural Engineers, St Joseph, MI,  pp. 61-64.
62. Committee on Characterization of wetlands (17 members included R.W. Skaggs).  1995.  Wetlands; Characteristics and Boundaries, National Academy Press, Washington D.C., 307 pp.
63. Hunt, W.F., Skaggs, R.W., Chescheir, G.M. and Amatya, D.M.  1995.  Reference Simulations: Methods for Comparisons.  In: K.L. Campbell (ed.) Versatility of Wetlands in the Agricultural Landscape.  American Society of Agricultural Engineers, St Joseph, MI, pp 11-20.
64. Skaggs, R.W., Hunt, W.F., Chescheir, G.M., and Amatya, D.M.  1995.  Reference Simulations for Evaluating Wetland Hydrology.  In: K.L. Campbell (ed.) Versatility of Wetlands in the Agricultural Landscape.  American Society of Agricultural Engineers, St Joseph, MI,  pp. 1-10.
65. Amatya, D.M., R.W. Skaggs and J.D. Gregory.  1994. Hydrologic modeling of drained forested watersheds.  Proceedings, Water Management in Forested Wetlands Workshop, U.S. E.P.A. and USDA Forest Service Technical Publication R8-TP 20, pp. 27-54.
66. Brevé, M.A., R.W. Skaggs, J.E. Parsons and J.W. Gilliam.  Prediction of drainage losses via drainage water with DRAINMOD-N.  Proceedings of the Second Environmentally Sound Agriculture Conference, Orlando, FL, April 22-24. pp 120-130.
67. Brevé, M.A., R.W. Skaggs and J. W. Gilliam. 1994.  Impactos Hydrologicos y de Calidad de Aguas del Drenaje Agricola, Proceedings of First International Meeting of Agricultural Engineering, Chillan, Chile, Nov. 23-26, pp. 54-63.
68. Gilliam, J.W., R.W. Skaggs and R.O. Evans. 1994. Controlled drainage to improve water quality and increase crop yields.  Proceedings of Soil Science Society of North Carolina, Vol. 37:13-17.
69. Murugaboopathi, C., R. W. Skaggs and R. O. Evans.  1994. Subirrigation for corn and soybean production on North Carolina soils. In: Belcher, H.W. and F. M D'Itri(eds) 1994. Subirrigation and controlled drainage, Lewis Publishers, Boca Raton, FL, pp. 37-61.
70. Skaggs, R. W. and C. Murugaboopathi.  1994.  Drainage and subsurface water management.  In: K Tanji and B. Yaron (eds.), Management of Water Use in Agriculture, Advanced Series in Agricultural Sciences, Springer-Verlag, Berlin, 22:104-125.
71. Skaggs, R. W. and M. Brevé.  1994.  Environmental impacts of water table control. In: Belcher, H.W. and F. M D'Itri(eds), Subirrigation and controlled drainage, Lewis Publishers, Boca Raton, FL, pp 247-268.
72. Susanto, R. H. and R.W. Skaggs.  1994.  Hydraulic head losses near agricultural drains:  Preliminary results and research needs. In: Belcher, H.W. and F.M. D'Itri(eds), Subirrigation and controlled drainage, Lewis Publishers, Boca Raton, FL., pp. 413-437.
73. Workman, S.R., Skaggs, R.W., Chescheir, G.M., Parsons, J.E. and Rice, J.F. 1994. DRAINMOD Users Guide, USDA, Natural Resource Conservation Service, Pub. 210-700, 128 pp.
74. Evans, R.O. and R. W. Skaggs.  1993.  Stress day index models to predict corn and soybean yield response to water table management.  In: E. Lorre (ed) Subsurface Drainage Simulation Models, Transactions of Workshop, 15th Congress ICID, The Hague, pp. 219-234.
75. Kandil, H. M., R. W. Skaggs, S. Abdel-Dayem, and Y. Aiad.  1993.  DRAINMOD-S: Water management model for irrigated lands, crop yield and application.  In: E. Lorre (ed) Subsurface Drainage Simulation Models, Transactions of Workshop, 15th Congress ICID, The Hague, pp. 257-275. 
76. Karvonen, T. and R. W. Skaggs.  1993.  Comparison of different methods for computing drainage water quality and quantity.  In: E. Lorre (ed) Subsurface Drainage Simulation Models, Transactions of Workshop, 15th Congress ICID, The Hague, pp. 201-216.
77. Skaggs, R. W.  1993.  Models for simulating hydrology and water quality on drained soils.  Proceedings of the ASCE National Conference on Irrigation and Drainage Engineering, Park City, UT, July 21-23, 1993, pp. 549-556.
78. Skaggs, R.W., M. A. Brevé, A. Mohammad, J. E. Parsons, and J. W. Gilliam. 1993.  Simulation of drainage water quality with DRAINMOD.  In: E. Lorre (ed) Subsurface Drainage Simulation Models, Transactions of Workshop, 15th Congress ICID, The Hague, pp. 183-220.
79. Brevé, M. A., R. W. Skaggs, H. Kandil, J. E. Parsons, and J. W. Gilliam.  1992. DRAINMOD-N:  A nitrogen model for artificially drained soils.  Proceedings of the Sixth International Drainage Symposium.  ASAE, St. Joseph, MI, pp. 327-344.
80. Chescheir, G. M., C. Murugaboopathi, R. W. Skaggs, R. H. Susanto, and R. O. Evans.  1992.  Modeling water table control with high head losses near the drain.  Proceedings of the Sixth International Drainage Symposium.  ASAE, St. Joseph, MI, pp. 38-45.
81. Evans, R. W. and R. W. Skaggs.  1992.  Evaluation of stress day index models to predict corn and soybean yield response to soil-water stresses.  Proceedings of the Sixth International Drainage Symposium.  ASAE, St. Joseph, MI, pp. 20-29.
82. Munster, C. L., R. W. Skaggs, J. E. Parsons, R. O. Evans, J. W. Gilliam, and E. Harmsen.  1992.  Aldicarb transport in the coastal plains of NC.  In: T. Engman (ed.), Irrigation and Drainage, Proceedings of the ASCE Water Forum '92, ASCE, New York,  pp. 419-424.
83. Skaggs, R. W., M. A. Brevé, and J. W. Gilliam.  1992.  Environmental impacts of agricultural drainage.  In: T. Engman (ed.), Irrigation and Drainage, Proceedings of the ASCE Water Forum '92, ASCE, New York, pp. 19-24.
84. Skaggs, R. W.  1992.  Drainage and water management modeling technology. (Keynote) Proceedings of the Sixth International Drainage Symposium.  ASAE, St.      Joseph, MI, pp. 1-11.
85. Susanto, R. H. and R. W. Skaggs.  1992.  Hydraulic head losses near agricultural drains during drainage and subirrigation.  Proceedings of the Sixth International Drainage Symposium.  ASAE, St. Joseph, MI, pp. 419-427.
86. Martin, D. L., J. R. Gilley and R. W. Skaggs.  1991.  Soil water balance and drainage.  In: R. Follett, D. R. Keeney, and R. M. Cruse (ed.) Managing nitrogen for groundwater quality and farm profitability.  Soil Science Soc. of America, Madison, WI, pp. 331-338.
87. Martin, D. L., J. R. Gilley and R. W. Skaggs.  1991.  Evapotranspiration Equations. Appendix II In: R. Follett, D. R. Keeney, and R. M. Cruse (ed.) Managing nitrogen for groundwater quality and farm profitability.  Soil Science Soc. of America, Madison, WI, pp. 199-235.
88. Martin, D. L., J. R. Gilley and R. W. Skaggs.  1991.  Crop coefficients.  Appendix III In: R. Follett, D. R. Keeney, and R. M. Cruse (ed.) Managing nitrogen for groundwater quality and farm profitability.  Soil Science Soc. of America, Madison, WI, pp. 339-341.
89. Skaggs, R. W.  1991.  Drainage, In: J. Hanks and J. Ritchie, (eds.), Modeling Plant and Soil Systems, Agronomy Monograph No. 31, American Society of Agronomy, Madison, WI, pp. 205-243.
90. Abdel-Dayem, S. and R. W. Skaggs.  1990.  Extension of DRAINMOD for simulating water management in arid regions.  Vol. II. Proceedings of Symposium on Land Drainage for Salinity Control in Arid and Semi-arid Regions, Drainage Research Institute, WRC, Cairo, Egypt, pp. 201-212.
91. Evans, R. O., J. W. Gilliam and R. W. Skaggs.   1990.   Controlled drainage and subirrigation effects on drainage water quality.  Proceedings of the 14th International Congress on Irrigation and Drainage, Rio de Janeiro.  pp. 13-30.
92. Evans, R. O., R. W. Skaggs and J. W. Gilliam.  1990.  Management practice effects on water quality.  Proc. of ASCE Irrigation and Drainage Division 1990 Conference, Durango, CO, July 11-13, pp. 182-191.
93. Fouss, J. L., R. W. Skaggs and J. E. Ayars.  1990.  Irrigation via watertable control.  Proceedings of the ASAE  Third National Irrigation Symposium, Phoenix, AZ.  ASAR Publication 4-90.  Oct. 29-Nov. 2, 1990.  pp. 354-360.
94. Fouss, J. L., R. W. Skaggs, J. A. Ayars and H. W. Belcher.  1990.  Water table control and shallow groundwater utilization.  In  G. J. Hoffman, T. A. Howell and K. H. Soloman (ed.) Management of Farm Irrigation Systems.  American Society of Agricultural Engineers Monograph, ASAE, St. Joseph, MI, pp. 783-824.
95. Parsons, J. E., R. W. Skaggs and J. W. Gilliam.  1990.  Pesticide fate with DRAINMOD/CREAMS.  Proceedings of CREAMS/GLEAMS Symposium, Athens, GA, pp. 123-125.
96. Skaggs, R. W., G. M. Chescheir and J. W. Gilliam.  1990.  Wetland buffer areas for treatment of pumped agricultural drainage water.  Proceedings of the 14th International Congress on Irrigation and Drainage.  Rio de Janeiro.  pp. 31-47.
97. Skaggs, R. W.  1990.  Sustainability of drainage systems.  Proc. of 4th International Drainage Workshop, Cairo, Egypt; ICID-CIID, CEMAGREF (France), pp. 39-42.
98. Skaggs, R. W.  1990.  Simulation of drainage system performance as affected by irrigation management.  (Keynote) Vol. I. Proceedings of Symposium on Land Drainage for Salinity Control in Arid and Semi-arid Regions, Drainage Research Institute, WRC, Cairo, Egypt, pp. 61-77.
99. Broadhead, R. G. and R. W. Skaggs.  1989.  Hydrologic model for the North Carolina peatlands.  In:  Dodd, V. A. and P. M. Grace (eds.) Agricultural Engineering.  I. Land and Water Use.  Bolkema, Rottendam, The Netherlands, pp. 61-70.
100. Skaggs, R. W. and R. G. Broadhead.  1989.  Hydrologic effects of peat mining.  In Dodd, V. A. and P.  M. Grace (eds.) Agricultural Engineering I. Land and Water Use.  Bolkema, Rotterdam, The Netherlands, pp. 45-52.
101. Skaggs, R. W. and R. O. Evans.  1989.  Methods to evaluate effects of drainage on wetland hydrology.  In: J. A. Kusler and S. Daly (ed.) Wetlands and River Corridor Management, Association of Wetland Managers, Berne, NY,  pp. 291-299.
102. Evans, R. O., J. W. Gilliam and R. W. Skaggs.  1989.  Managing water table  management systems for water quality.  In: Proceedings of Speciality Conference, ANational Water Quality and Life Symposium,@ Irrigation and Drainage Division, ASCE, pp. 541-552.
103. Chescheir, G. M., R. W. Skaggs, J. W. Gilliam and R. G. Broadhead.  1988.  Wetland buffer areas for treatment of pumped agricultural drainage water. In:  Lyke, W. L. and Hoban, T. J. (eds.), Proc. of A.W.R.A. Symposium on Coastal Water Resources, pp. 255-263.
104. Chescheir, G. M., G. Fipps and R. W. Skaggs.  1988.  Hydrology of two stormwater infiltration ponds on the North Carolina Barrier Islands.  In: Lyke, W. L. and Hoban, T. J. (ed.).  Proc. of A.W.R.A. Symposium on Coastal Water Resources, pp. 313-319.
105. Fipps, G., G. M. Chescheir and R. W. Skaggs.  1988.  Modeling seepage from stormwater infiltration ponds.  In: Lyke, W. L. and Hoban, T. J. (eds.).  Proc. of A.W.R.A. Symposium on Coastal Water Resources, pp. 321-332.
106. Gilliam, J. W. and R. W. Skaggs.  1988.  Nutrient and sediment removal in wetland buffers.  In: J. Kusler and G. Brooks (ed.), Wetland Hydrology, Assoc. of State Wetland Managers, Berne, NY, pp. 174-177.
107. Evans, R. O., J. W. Gilliam, R. W. Skaggs and W. L. Lembke.  1987.  Effects of agricultural water management on drainage water quality.  Proceedings of Fifth National Drainage Symposium, ASAE, St. Joseph, MI, pp. 210-219.
108. Evans, R. O. and R. W. Skaggs.  1987.  Design procedures for water table management systems in North Carolina.  Proceedings of Third International Drainage Workshop, Ohio State Univ.,  pp. D9-D22.
109. Evans, R. O. and R. W. Skaggs.  1987.  Operational and management guidelines for water table management systems in North Carolina.  Proceedings of Third International Drainage Workshop, Ohio State Univ.,  pp. E9-E18.
110. Fipps, G. and R. W. Skaggs.  1987.  Numerical simulation of hillside drainage.  Proceedings of Third International Drainage Workshop, Ohio State Univ., Columbus, OH,  pp. A41-A53.
111. Konyha, K. D. and R. W. Skaggs.  1987.  A coupled field hydrology and open channel flow model.  Proceedings of Third International Drainage Workshop, Ohio State Univ., pp. A105-A114.
112. Lagacé, R., J. Gallichand and R. W. Skaggs.  1987.  Prediction of drain sedimentation.  Proceedings of Fifth National Drainage Symposium, ASAE, St. Joseph, MI, pp. 354-361.
113. Parsons, J. E., R. W. Skaggs and C. W. Doty.  1987.  Controlled drainage and subirrigation in open ditch drainage systems.  Proceedings of Third International Drainage Workshop, Ohio State Univ., pp. E89-E98.
114. Skaggs, R. W.  1987.  Principles of Drainage, Chapter 6 in Farm Drainage in the United States:  History, Status and Prospects. United States Department of Agriculture Misc. Publ. No. 1455-6274, pp. 62-78.
115. Skaggs, R. W.  1987.  Model development, selection and use.  Proceedings of Third International Drainage Workshop, Ohio State University, Columbus, OH,  pp. 29-39.  (Invited paper).
116. Workman, S. R. and R. W. Skaggs.  1987.  A field comparison of two drainage simulation models.  Proceedings of Third International Drainage Workshop, The Ohio State University, Columbus, OH,  pp. 157-166.
117. Chescheir, G. M., R. W. Skaggs, J. W. Gilliam and R. G. Broadhead.  1986.  Hydrology of wetland buffer areas for pumped agricultural drainage water.  In D. K. Hook (ed.) The Ecology and Management of Wetlands, Vol. 2, Croom Helm, London, pp. 160-174.
118. Gilliam, J. W. and R. W. Skaggs.  1986.  Riparian areas and water management to control nonpoint pollutants.  In C. Y. Kuo and T. M. Younos (eds.) Effects of Upland  and Shoreline Land Use on the Chesapeake Bay, Virginia Polytechnic Institute, Blacksburg, VA, pp. 34-43.
119. Gilliam, J. W. and R. W. Skaggs.  1986.  Natural buffer areas and drainage control to remove pollutants from agricultural drainage water.  In: J. Kusler (ed.) National Wetland Symposium: Mitigation of Impacts and Losses.  Assoc. State Wetland Managers.  Amherst, MA,  pp.145-148.
120. Gilliam, J. W., G. M. Chescheir, R. W. Skaggs and R. G. Broadhead.  1986.  Effects of pumped agricultural drainage water on wetland water quality.  In: D. K. Hook (ed.) The Ecology and Management of Wetlands, Vol. 2, Croom Helm, London, pp. 275-283.
121. Konyha, K. D., R. W. Skaggs and J. W. Gilliam.  1986.  Hydrologic impacts of agricultural water management. In: D. K. Hook (ed.)  The Ecology and Management of Wetlands, Vol. 2, Croom Helm, London, pp. 148-159.
122. Skaggs, R. W.  1986.  Drainage.   In:  Proceedings of the International Conference,  W. R. J. Jordan, (ed.)  Water and Water Policy in World Food Supplies, Ch. 49,  Texas A&M University, College Station, TX, pp. 319-324.
123. Skaggs, R.W.  1986.  Drainage Modeling in Research and Design.  In: J. Saavalainen and P. Vakkilainen (eds.), Proceedings  of International Seminar on Land Drainage, July 9-11, 1986, Helsinki, Finland, pp. 153-180.
124. Skaggs, R. W. and J. W. Gilliam.  1986.  Modeling subsurface drainage and water management systems to alleviate potential water quality problems.  In: A. Giorgini and F. Zingales, eds., Agricultural Nonpoint Source Pollution: Model Selection and Application,  Elsevier, Amsterdam, pp. 295-319.
125.  Skaggs, R. W. 1986.  Design and management of drainage systems.  Proceedings of Fifth National Drainage Symposium, ASAE, St. Joseph, MI, pp. 1-12.  (Keynote paper).
126. Gilliam, J.W. and R. W. Skaggs.  1985.  Use of drainage control to  minimize potential detrimental effects of improved drainage systems.  Proceedings of ASCE Specialty Conference, Development and Management Aspects of Irrigation and Drainage Systems,@ Am. Soc. Civil Engrs., New York, pp. 352-362.
127. Gilliam, J. W., R. W. Skaggs and C. W. Doty.  1985.  Controlled agricultural drainage: An alternative to riparian vegetation.  pp. 225-243.  In:  D. L. Correll (ed.) Watershed Research Perspectives.  Smithsonian Institution Press, Washington, DC.
128. Gilliam, J. W. and R. W. Skaggs.  1985.  Management of agricultural drainage water to minimize nutrient inputs into estuaries and bays.  In:  Land Use and the Chesapeake Bay.  C. W. Coale, et al. (eds.), VA Cooperative Extension Service, Publ. 305-003, pp. 21-30.
129. Parsons, J. E., C. W. Doty and R. W. Skaggs.  1985.  Management of water in agricultural drainage districts, Proceedings of the 1983 Natural Resources Modeling Symposium, Pingree Park, CO, USDA, ARS-30, pp. 407-410.
130. Skaggs, R. W.  1985.  DRAINMOD.  A water management model for artificially drained soils.  Proceedings of the 1983 Natural Resources Modeling Symposium, Pingree Park, USDA, ARS-30, pp. 391-396.
131. Doty, C. W., J. E. Parsons. A. N. Tabrizi, R. W. Skaggs and A. W. Badr.  1982.  Deep ditch overdrainage affects water table depth and crop yield.  Proceedings of  ASAE speciality conference on Irrigation and Drainage, Orlando, Florida, pp. 113-121.
132. Gilliam, J.W., R. W. Skaggs and T. J. Sheets.  1982.  Fertilizer and pesticide movement in surface water.  Proceedings of Workshop on Agrichemicals and Estuarine Productivity. Duke Marine Lab., Beaufort, N. C. Sept., 1980.  U.S. Dept. of Commerce, NOAA Office of Marine Pollution Assessment.  pp. 117-137.
133. Lagacé, R., R. W. Skaggs and J. E. Parsons.  1982.  Predicting water table drawdown near intersecting drains.  Proceedings of the Fourth National Drainage Symposium, ASAE Pub. 12-82. Amer. Soc. of Agricultural Engineers, St. Joseph, MI, pp. 6-15.
134. Lagacé, R. and R. W. Skaggs.  1982.  Prediction of drain silting and filter requirement criteria.  Proceedings of International Drainage Workshop, Washington, D.C.  pp. 161-171.
135. Mohammad, F. S. and R. W. Skaggs.  1982.  Effect of drain tube openings on transient drainage.  Proceedings of 2nd International Drainage Work shop, Washington, D.C.  pp. 185-197.
136. Skaggs, R. W. and R. Khaleel.  1982.  Infiltration. In:  Hydrologic Modeling of Small Watersheds, Chapter 4 of ASAE Monograph,  T. Haan, ed., American Society of Agricultural Engineers, St. Joseph, MI, pp. 121-166.
137. Skaggs, R. W. and A. Nassehzadeh-Tabrizi.  1982.  Effect of drainage system design on surface and subsurface runoff from artificially drained lands.  International Symposium on Rainfall- Runoff Modeling; Applied Modeling in Catchment Hydrology, Water Resources Publications, Littleton, CO,  pp. 337-354.
138. Skaggs, R. W. and A. Nassehzadeh-Tabrizi.  1982.  Optimizing drainage system design for corn.  Proceedings of the Fourth National Drainage Symposium, ASAE Pub. 12-82. Am. Soc. Agric. Engrs., St. Joseph, MI, pp. 50-61.
139. Gilliam, J. W. and R. W. Skaggs.  1981.  Drainage and agricultural development: effects on drainage waters.  In C. J. Richardson, (ed), Pocosin  Wetlands, Hutchinson Ross Publishing Co., Stroudsburg, PA,  pp. 109-124.
140. Skaggs, R. W.  1981.  DRAINMOD Reference Report.  Methods for design and evaluation of drainage-water management systems for soils with high water tables.  USDA, Soil Conservation Service, 329 pp.
141. van Schilfgaarde, J., G. J. Kriz, ........, R. W. Skaggs, et al. 1981.  Water a basic resource. Chapter 1 in Soil and Water Resources: Research Priorities for the Nation, W. E. Larson, L. M. Walsh, B. A. Stewart and D. H. Boelter, eds.  Soil Science Society of America, Inc., Madison, WI, pp. 1-20.
142. Skaggs, R. W., D. E. Miller and R. H. Brooks.  1980.  Soil Water, Part I-Properties.  In Design and Operation of Farm Irrigation Systems, Chapter 4 of ASAE Monograph,  M. Jensen, ed., American Society of Agricultural Engineers, St. Joseph, MI, pp. 77-123.
143. Anderson, J. L., R. B. Grossman, K. A. Healy (Coordinator) and R. W. Skaggs.  1978.  Site testing for the design of septic systems (invited paper).  Proceedings Second National Home Sewage Treatment Symposium.  ASAE Publication  5-77, ASAE, St. Joseph, MI, pp. 16-21.
144. Skaggs, R. W.  1977.  Evaluation of drainage-water table control systems using a water management model.  Proceedings of the Third National Drainage Symposium, ASAE Publication 1-77, American Society of Agricultural Engineers, St. Joseph, MI, pp. 61-68.
145. Humenik, F. J., R. W. Skaggs, C. R. Willey and D. Huisingh.  1972.  Evaluation of swine waste treatment alternatives.  Proceedings of the Cornell University Conference on Agricultural Waste Management, pp. 341-352.
146. Skaggs, R. W.  1971.  Infiltration of water into the soil profile.  In Monke, E. J. (ed) Biological Effects in the Hydrological Cycle.  Proceedings of the Third International Seminar for Hydrology Professors.  Purdue University, pp. 123-135.

C. Extension Publications and User Oriented Articles

1. Skaggs, R.W. and M.A. Youssef. 2009. Modern drainage water management to reduce drainage volumes and nitrogen losses.  ICID Newsletter, Vol. 4:4.
2. Amatya, D.M., R.W. Skaggs, and C.C. Trettin. 2009. Advancing the science of forest hydrology: A challenge to agricultural and biological engineers. Resource, July/August:10-11.
3. Evans, R.O., J.P. Lilly, R. Wayne Skaggs and J.Wendell Gilliam.  2000. Rural land use, Water movement, Coastal water quality, AG-605 North Carolina Cooperative Extension Service, N.C. State University, Raleigh, 12 p.
   
4. Paugh, l., D.M. Amatya, J.D. Gregory and R.W. Skaggs. 1999. Hydrology of two managed pine plantations on two different poorly drained soils. Proc. 1999 Soil Science Society of NC: 83-93.
5. Skaggs, R.W. and G.M. Chescheir.1999.  Drains in depth. Resource Vol.6(9):13-14.
6. Skaggs, R. W. and M. A. Brevé.  1992.  Hydraulic and water quality impacts of agricultural drainage.  Pipeline (published by Corrugated Plastic Pipe Association) 4:1-2.
7. Skaggs, R. W.  1991.  Predicting nutrient transport.  Agribook Magazine/Drainage Contractor 18(2):8.
8. Evans, R. O., J. W. Gilliam and R. W. Skaggs.  1990.  Controlled drainage management guidelines for improving water quality.  AG-443, N. C. Agricultural Research Service and N.C. Agricultural Extension Service Bulletin, 15 pp.
9. Evans, R. O., R. W. Skaggs and R. E. Sneed.  1988.  Economics of controlled drainage and subirrigation systems.  Publication AG-397, Agricultural Extension Service, N. C. State University, Raleigh.  17 pp.
10. Evans, R. O., R. E. Sneed and R. W. Skaggs.  1987.  Water supplies for subirrigation.  Publication AG-389, Agricultural Extension Service, N. C. State University, Raleigh, 13 pp.
11. Skaggs, R.W.  1986.  Lateral drain spacing for subirrigation.  Subirrigation Design Manual.  Michigan State University.  Subirrigation Design School, 10 pp.
12. Evans, R. O. and R. W. Skaggs.  1985.  Subirrigation and water table control.  Proceedings of Drainage-Subirrigation Conference, Blackshear, GA, Univ. of GA Agr. Engr. Department, Coastal Plains Experiment Station, Tifton, GA.  pp. 14-26.
13. Evans, R. O. and R. W. Skaggs.  1985.  Agricultural Water Management for Coastal Plains Soils.  N. C. Agricultural Extension Service Bulletin AG-355, N.C. State Univ., Raleigh, 11 pp.
14. Evans, R. O. and R. W. Skaggs.  1985.  Operating controlled drainage and subirrigation systems.  N. C. Agricultural Extension Service Bulletin AG-356, N. C. State Univ., Raleigh, 10 pp.
15. Gilliam, J. W., J. Miller, L. Pietrafesa and R. W. Skaggs.  1985.  Water management and estuarine nurseries. UNC Sea Grant College Program Working Paper 85-2.  N. C. State University, Raleigh, 84 pp.
16. Lagacé, R. and R. W. Skaggs.  1985.  Prevision Du Colmatage Des Drains Par La Methode D'analyse Des Agregates.  In La Recherche En Drainage Southerrain, R. Lagacé, ed., Department De Genie Rural, Univertsite Laval, Quebec, pp. 19-40.
17. Lagacé, R. and R. W. Skaggs.  1985.  Colmatage Des Drains: Experiences  En Laboratoire.  In R. Lagacé (ed.) La Recherche En Drainage Southerrain, Department De Genie Rural, Universite Laval, Quebec, pp. 41-68.
18. Skaggs, R. W.  1984.  Drainage and irrigation.  Proceedings of the 1983 North Carolina Irrigation Conference,  pp. 17-29.
19. Tabrizi, A.N., R. W. Skaggs and C. W. Doty.  1984.  Subirrigation.  Proceedings of the Nineteenth Annual North Carolina Irrigation Conference, AWater and Energy Management.@  North Carolina Irrigation Society, pp. 29-39.
20. Nolte, B. H., R. W. Skaggs and N. R. Fausey.  1982.  Tradeoff between surface and subsurface drainage.  The Ohio Report 67(2):27-29.
21. Nolte, B. H., N.R. Fausey and R. W. Skaggs.  1982.  How deep should drains be for effective drainage.  The Ohio Report  67(4):66-67.
22. Nolte, B. H., R. W. Skaggs and N. R. Fausey.  1982.  Why tiled fields have uneven drainage and drying rates.  The Ohio Report 67(5):77- 79.
23. Skaggs, R. W.  1981.  Effect of subsurface drainage on runoff.  Drainage Contractor 8(1)28-34.
24. Skaggs, R. W., J. W. Gilliam, T. J. Sheets and J. S. Barnes.  1981.  Effect of agricultural land development on drainage waters in the North Carolina Tidewater region.  U.S. Environmental Protection Agency Project Summary.  3 pp.
25. Skaggs, R. W.  1981.  Controlled drainage and subirrigation.  Research and Farming, North Carolina Agricultural Research Service, 39(3- 4):6-7.
26. Skaggs, R. W. 1980.  Subsurface irrigation.  In: Irrigation Handbook for North Carolina, North Carolina Irrigation Society. 6 pp.
27. Skaggs, R. W.  1978.  Drainage-subirrigation systems-drain when its wet-irrigate when its dry.  Drainage Contractor 4(1):176-178.  (Trade journal, invited paper).
28. Skaggs, R. W. and D. C. Sanders.  1975.  Use of waste heat for soil warming in the Southeast.  In Future Developments in Waste Heat, Circular No. 49, Engineering Experiment Station, Oregon State University, Corvallis, OR, pp. 97-100.
29. Skaggs, R. W., D. C. Sanders and C. R. Willey.  1975.  An evaluation of the use of waste heat for soil warming in the Southeast. A research special, North Carolina Water Resources Research Institute, NCSU, Raleigh, NC, 4 pp.

D. Published Technical Reports

1. Skaggs, R.W., G.M. Chescheir and B.D. Phillips.  2007. Determination of lateral effects of borrow pits on hydrology of adjacent wetlands.  CTE / NCDOT Final Report, N.C Department of Transportation, 1549 Mail Service Center, Raleigh, N.C. 27699,  85 pp.
2. Skaggs, R.W., G.M. Chescheir and B.D. Phillips. 2006.  Development of methods to determine lateral effect of highway drainage systems on wetland hydrology.  CTE / NCDOT Final Report, N.C Department of Transportation, 1549 Mail Service Center, Raleigh, N.C. 27699,  31 p.
3. Chescheir, G.M., D.M. Amatya and R.W. Skaggs.  2007. Effects of afforestation on the hydrologic behavior of a basin in the Tacuarembo River.  Technical Report submitted to Weyerhaeuser Foundation, Federal Way, Washington, 48 p.
4. Skaggs, R.W., G.M. Chescheir and B.D. Phillips.  Development of methods to determine lateral effect of highway drainage systems on wetland hydrology—phase 2.  CTE / NCDOT Final Report, project 2005-21.  N.C Department of Transportation, 1549 Mail Service Center, Raleigh, N.C. 27699, 26 pp.
5. Skaggs, R.W., G.M. Chescheir, D.L. Osmond and J.W. Gilliam. 2007. Validating Phosphorus losses in the lower coastal plain: Phase II, Field scale. NC DWQ contract # EW 05042, 44p.
6. Chescheir, G.M., M.E. Lebo, D.M. Amatya, J.E. Hughes, J.W. Gilliam, R.W. Skaggs, and R.B. Herrmann. 2004. Base Line Water Quality of Drainage Outflows from Coastal Forests. North Carolina Agricultural Research Service,
7. Hunt, W.F., III, R.W. Skaggs, G.M. Chescheir and D.M. Amatya. 2001. Examination of the wetland hydrologic criterion and its application in the determination of wetland hydrologic status. Report No. 333, UNC Water Resources Research Institute, 119pp.
8. Munster, C.L., G.M. Chescheir, R.W. Skaggs, J.E. Parsons, T.J. Sheets, J.W. Gilliam, R.O. Evans, E. Harmsen, and R.B. Leidy. 1994. Effects of drainage and water table control on groundwater quality and surface water quality; Part I. Methodology and preliminary results. Tech. Report. No. 283, UNC Water Resources Research Institute, 168 pp.
9. Chescheir, G.M., R.W. Skaggs, J.W. Gilliam, M.A. Brevé, C. Munster, R.O. Evans, R.B. Leidy, and J.E. Parsons. 1996. Effects of drainage and water table control on groundwater quality and surface water quality; Part II. Experimental results and simulation models. Tech. Report No. 301, UNC Water Resources Research Institute, 234 pp.
10. Chescheir, G. M., G. Fipps and R. W. Skaggs. 1990. Analysis of stormwater infiltration ponds on the North Carolina Outer Banks. Tech. Report No. 254, UNC Water Resources Research Institute, 91 pp.
11. Chescheir, G. M., R. W. Skaggs and J. W. Gilliam. 1990. Effects of water management and land use practices on the hydrology and water quality in the Albemarle-Pamlico region. Report No. 90-09, APES, North Carolina Dept. of Health, Environment and Natural Resources, 59 pp.
12. Evans, R. O., J. W. Gilliam and R. W. Skaggs. 1989. Effects of agricultural water table management on drainage water quality. Tech. Report No. 237, UNC Water Resources Research Institute, 87 pp.
13. Miller, J. M., R. W. Skaggs, E. D. Seneca and S. W. Broome. Some problems peculiar to highway construction in the North Carolina areas, particularly the Outer Banks. Technical Report ERSD-110-76-1, Highway Research Program, Dept. of Civil Engr., North Carolina State University, 63 pp.
14. Chescheir, G. M., J. W. Gilliam, R. W. Skaggs and R. G. Broadhead. 1987. The hydrology and pollutant removal effectiveness of wetland buffer areas receiving pumped agricultural drainage water. Tech. Report No. 231, UNC Water Resources Research Institute, 170 pp.
15. McCarthy, J. M., K. Robbins, K. Konyha and R. W. Skaggs. 1985. First Colony Farms Water Management Plan. Submitted to the North Carolina Dept. of Natural Resources and Community Development, FCF, Creswell, NC, 47 pp.
16. Gregory, J.D., R. W. Skaggs, R.G. Broadhead, R. H. Culbreath J. R. Bailey and T. L. Foutz. 1984. Hydrologic and water quality impacts of peat mining in the coastal zone of North Carolina. WRRI Technical Report No. 83-201. CEIP Report No. 22. 215 pp.
17. Skaggs, R.W., J.W. Gilliam, T.J. Sheets and J.S. Barnes. 1980. Effect of agricultural land development on drainage waters in the N. C. Tidewater Region. Report No. 159, Water Resources Research Institute of the University of North Carolina, N.C. State University, Raleigh.
18. Gilliam, J. W., R. W. Skaggs and S. B. Weed. 1978. An evaluation of the potential for using drainage control to reduce nitrate loss from agricultural fields to surface waters. Technical Report No. 128, Water Resources Research Institute of the University of North Carolina, N. C. State University, Raleigh. 108 pp.
19. Skaggs, R. W. 1978. A water management model for shallow water table soils. Technical Report No. 134. Water Resources Research Institute of the University of North Carolina, N. C. State University, Raleigh. 128 pp.
20. Skaggs, R. W., D. C. Sanders and C. R. Willey. 1975. An evaluation of the use of waste heat for soil warming in the Southeast. Tech. Report No. 103, UNC Water Resources Research Institute, 100 pp.
21. Skaggs, R. W. and G. J. Kriz. 1972. Water table control and subsurface irrigation on mineral and high organic Coastal Plain soils. Technical Report No. 67, UNC Water Resources Research Institute. 63 pp.
22. Skaggs, R. W., E. J. Monke and L. F. Huggins. 1970. An approximate method for determining the hydraulic conductivity function of unsaturated soil. Technical Report 11, Purdue Water Resources Center, Lafayette, Indiana. 124 pp.
23. Swartzendruber, D., R. W. Skaggs and D. Wiersma. 1968. Characterization of the rate of water infiltration into soil. Technical Report 5, Purdue Water Resources Center, Lafayette, Indiana, 120

SUMMARY OF PUBLICATIONS:

Total (not including abstracts)............................................................................... 376

Refereed Journal Articles........................................................................................ 179

Books/Chapters and Published Conference Proceedings...................................... 147

Extension Publications and User Oriented Articles.................................................. 27

Published Technical Reports...................................................................................... 23

 

VII. Invited Papers, Seminars and Lectures:

A. International

1. Effects of drainage design and management on agricultural production and drainage water quality in Egypt, Invited, Drainage Research Institute, Egypt Ministry of Irrigation, Cairo, Egypt, Jan. 5, 2010.
2. Effects of drainage water management on nitrogen losses to surface waters, Invited, International Forum on Water Resources and Sustainable Development, Wuhan, China, September 22-25, 2009
3. Determining hydrologic impacts of afforestation of grasslands. Invited,
   XIII World Forestry Congress, Buenos Aries, Argentina, October 20, 2009.
4. Effects of drainage and forest management practices on hydraulic conductivity of wetland soils.  (Keynote) 13th World Peat Congress, June 8-13, 2008, Tullamore, Ireland.
5. Effect of controlled drainage on water and nitrogen balances in drained lands.  (Keynote)10th International Drainage Workshop of ICID Working Group on Drainage, July 8-12, 2008, Helsinki, Finland and Tallinn, Estonia: 195-208.
6. Agricultural Drainage: Impacts on Hydrology, Crop Production, and Water quality, Third annual William E. Larson and Raymond R. Allmaras Lecture on Emerging Issues in Soil and Water, University of Minnesota, April 15, 2005
7. Methods for designing and managing drainage systems. Keynote address, 1^st National Salinity Engineering Conference, Perth Australia, Nov. 9-12, 2004.
8. Effect of drainage intensity on nitrogen loss to surface waters. Keynote, 8^th International Drainage Symposium, Sacramento, CA, March 21-24, 2004.
9. Integrated design of irrigation and drainage systems, Lecture, Special Public Symposium, Rethinking irrigation in light of competing pressures, Brace Centre for Water Resources Management, McGill University, Montreal, Canada, Sept. 10, 2001.
10. Designing drainage system design for agricultural production and improved water quality, Agronomia Ambientale Seminar, Padova University, Padova, Italy, Nov. 16, 2001.
11. The hydrology of wetlands Seventh Symposium of the Biogeochemistry of Wetlands, Duke University, June 17-20, 2001.
12. Modeling impacts of water management practices and land uses on hydrology and pollutant loads from coastal plains watersheds, CEMAGREF, Antony, France, Dec. 19, 2000.
13. Designing and managing drainage systems to satisfy water quality and agricultural objectives: effects of drain depth. (Keynote paper) Proc. of ADrainage and Water Management in Agriculture: Benefits and Conflicts, Tallin, Estonia, 1999
14. Effects of drainage design on water quality and agricultural production, Swedish agricultural University, Uppsala, May 31-June1, 1999.
15. Designing and managing drainage systems to satisfy water quality and agricultural objectives, Agricultural University of Norway at As, June 2, 1999.
16. Designing and managing drainage systems to satisfy water quality and agricultural objectives, Helsinki Technical University, Finland, June 4, 1999.
17. Designing and managing drainage systems to satisfy water quality and agricultural objectives, Seminar, World Bank, Washington, DC., May 13, 1999.
18. Modeling drainage and related water management systems, GDRS, Ankara, Turkey, June 23, 1998.
19. Hydrologic and water quality impacts of agricultural drainage systems, International Symposium on Drainage for Banana Production, EARTH University, Costa Rica, August, 1997.
20. Simulation modeling for designing drainage systems to satisfy multiple objectives (Keynote), 7^th ICID International Drainage Workshop, Penang, Malaysia, November 17-21, 1997.
21. Application of DRAINMOD in Turkey, GDRS, Soil and Fertiliser Research Institute, Ankara, Turkey, June 25, 1997.
22. DRAINMOD, FAO consultation on Simulation Models for Integrated Management of Irrigation and Drainage, Rome, Italy, October 28-29, 1997.
23. Modeling the performance of drainage systems, Drainage Research Institute, Cairo, Egypt, March 18, 1997.
24. Invited lectures on modeling drainage and related water management systems, Department of Irrigation and Drainage, Malaysian Department of Agriculture, Kuala Lumpur, Malaysia, Nov. 13-17, 1995.
25. The effects of agricultural drainage practices on water quality(Keynote), Symposium on Agricultural Land Use vs Water Quality, Truro, Nova Scotia, Oct. 16, 1995.
26. Predicting effects of water table management on loss of nitrogen from poorly drained soils, European Society of Agronomy International Workshop, Modeling the Fate of Agrochemicals and Fertilizers in the Environment, Venice, Italy, Mar. 3-5, 1994.
27. Water management modeling, Water Management in Forested Wetlands Workshop, Atlanta, GA, April 26-28, 1994.
28. Agricultural effects on water quality in North Carolina, Laboratoire d'Evolution des Systms Naturels es Modifis, Rennes University, Rennes, France, September 8, 1993.
29. Drainage water quality research, INRA Experimental Station at St. Laurent de la Pre, La Rochelle, France, September 10, 1993.
30. Drainage: Practices, research and implications for the environment, D.G. Bowler Memorial Lecture, Massey University, Palmerston North New Zealand, October 29, 1993.
31. The role of hydrologic simulation models in the design process, Land Treatment Collective meeting, Christchurch, New Zealand, October 28, 1993.
32. Water table management for agricultural production, Malaysian Agricultural Research and Development Institute (MARDI), Kuala Lumpur, Malaysia, Oct.21, 1993.
33. Computer simulation for design and analysis of drainage systems, Malaysian National Committee on Water Management, Kuala Lumpur, Malaysia, Oct. 22, 1993.
34. Environmental impacts of drainage and water table management systems: Design for conflicting objectives,Malaysian National Committee of International Committee of Irrigation and Drainage (MACID), Kuala Lumpur, Malaysia, Oct. 23,1993.
35. Drainage and water management modeling technology (Keynote), Sixth International Drainage Symposium (ASAE), Nashville, TN, December 13-15, 1992.
36. Environmental impacts of water table control (Keynote), International Conference on Subirrigation and Controlled Drainage, Lansing, MI, August 12-14, 1992.
37. Environmental effects of agricultural drainage, Seminar. Helsinki University of Technology, Helsinki, Finland, April 4, 1990.
38. Controlled drainage and subirrigation research and applications and Research in high water table soils, Lectures, Department of Civil and Environmental Engineering, Helsinki University of Technology, Helsinki, Finland, April 5 and 6, 1990.
39. Simulation of drainage system performance as affected by irrigation management (Keynote), International Symposium on Land Drainage for Salinity Control in Arid and Semi-arid Regions, Cairo, Egypt, Feb. 25-March 1, 1990.
40. Modeling subirrigation systems, Centre National du Machinisme Agricole, Du Genie Rural Des Eaux Et Des Forets. CEMAGREF, Division Hydraulique Agricole, Bordeaux, France, Aug. 16, 1988.
41. Use of DRAINMOD to design water table control systems, Centre National du Machinisme Agricole, Du Genie Rural Des Eaux Et Des Forets. CEMAGREF, Division Drainage Assainissement Agricoles, Antony, France, Aug. 23, 1988.
42. Drainage modeling in research and design, International Seminar on Land Drainage, Helsinki, Finland, 1986.
43. Drainage, Water and Water Policy in World Food Supplies, International conference on Food and Water, Texas A&M University, May 26-30, 1985.
44. Water in Agriculture, Not One Drop More, Public Lecture, School of Engineering, Guelph University, Guelph, Ontario, Oct. 18, 1985.
45. Modeling Water Management Systems, Seminar, Department of Agricultural Engineering, Technion, Haifa, Israel, May 31, 1984.
46. Modeling subsurface drainage and water management systems to alleviate potential water quality problems, International Conference on Agriculture and the Environment 1984, Venice, Italy, June 11-12, 1984.
47. Effect of drain tube openings on transient drainage, Paper, International Drainage Workshop, Washington, D.C., December 5- 11, 1982.
48. Evaluation of water management problems associated with sugar cane production in Jamaica, Invited by the Jamaican Sugar Industry Research Institute to evaluate several water management problems and determine suitability of several proposals for a Ph.D. thesis topic for a Jamaican graduate student. Kingston, Jamaica and surrounding area, February 19-23, 1978.
49. Lectures on Design and evaluation of surface and subsurface drainage systems,Guest Professor for four days of a three-week full time postgraduate course in Land Drainage Engineering, Macdonald Campus, McGill University, Ste. Anne de Bellevue, Quebec. May 14-19, 1978.
50. Theory of water movement in soil, Paper, 3rd International Seminar for Hydrology Professors, Purdue University, July 18-30, 1971.
51. The effect of boundary and initial conditions on infiltration of water into the soil, Paper, 3rd International Seminar for Hydrology Professors, Purdue University, July 18-30, 1971.