Steenhuis, Tammo S

Professor
The Soil and Water Lab is a dynamic and innovative research group in Cornell University`s department of Biological and Environmental Engineering. Its broad mission is to improve the understanding of physical, chemical, and biological processes related to water flow with the ultimate goal of improving and protecting water resources and ecological systems throughout the world and in socially conscious ways. While special emphasis is given to the Northeastern U.S., where the lab`s primary infrastructure is, we also work around the world including several projects in developing countries.

research

research and scholarship focus

Research spans spatial scales from molecules to continents, with particular emphasis at hillslope and watershed scales. The group`s work is largely interdisciplinary with colleagues in ecology, microbiology, atmospheric sciences, soil science, and other biogeosciences as well as social sciences and economics. The Soil and Water Lab considers the spectrum of basic and applied research questions and is committed to developing water resources tools are scientifically valid and usable within the appropriate environmental, social, and economic contexts.

primary investigator of

research areas

international geographic focus

domestic geographic focus

affiliations

faculty appointment in

member of graduate field

other Cornell affiliations

teaching

teaching focus

The focus of our Soil and Water program is on graduate students that are effective critical thinkers, socially conscious, and professionally and personally successful. Given the great number of professors as graduate from our program, we are pretty successful at it too!

service

outreach focus

Our main extension/outreach activities are on watershed development worldwide: In the US we are developing web based tools that correctly capture and model the spatial distribution of runoff and non point source areas, allowing planners to evaluate the effectiveness of proposed best management practices In Sub-Saharan Africa with USAID and CGIAR funding in cooperation with the International Water Management Institute we work with colleagues on bottom up approaches in watershed development particular in Ethiopia. Ghana and Mali. In addition, with World Bank support we are developing a MPS program with Bahir Dar University on Lake Tana in Ethiopia on Integrated Watershed Management. This program will train a cadre of future watershed practitioners in East Africa. Finally, for our extension and research activities in Europe and North Africa, we are cooperating with a European Union funded project on “Desertification mitigation and remediation of land - a global approach for local Solutions”

current professional activities

  • American Geophysical Union
  • American Society of Agronomy
  • Soil Science Society of America
  • International Soil Science Society
  • Associate Editor of Water Research Journal of Hydrology 
  • Alpha Epsilon
  • Sigma Xi
  • Gamma Sigma Delta

background

educational background

  • Ph.D., Agricultural Engineering, Soil and Water Management University of Wisconsin, 1977
  • M.S., Agricultural Engineering, Soil and Water Management, University of Wisconsin, 1975
  • M.S., Irrigation and Drainage State Agricultural University of The Netherlands, 1972
  • B.S., Irrigation and Drainage State Agricultural University of The Netherlands, 1969

professional background

  • Professor, Cornell University, 1996 - present
  • Associate Professor, Cornell University, 1983 - 1996
  • Assistant Professor, Cornell University, 1978 - 1983
  • Research Associate, Cornell University, 1977 - 1978
  • Research Assistant, University of Wisconsin, 1973 - 1977
  • Research Associate, State Agricultural University of The Netherlands, 1972
  • Instructor of Biology, College of Education, Steenwykerwold, The Netherlands, 1971 - 1972
  • Trainee, Nebraska Soil and Water Conservation Commission, 1969

publications

selected publications (listing in progress)

  1. DiCarlo, D.A., T.W.J. Bauters, C.J.G. Darnault, T.S. Steenhuis, and J.-Y. Parlange. 1999. Lateral Expansion of Preferential Flow Paths in Sands. Water Resources Research 35:427-434.
  2. Steenhuis, T.S., J.-Y. Parlange, W.E. Sanford, A. Heilig, F. Stagnitti, and M.F. Walter. 1999. Can We Distinguish Richards’ and Boussinesq’s Equations for Hillslopes? The Coweeta Experiment Revisited. Water Resources Research 35:589-593.
  3. Nguyen, H.V., J.L. Nieber, P. Oduro, C.J. Ritsema, L.W. Dekker, and T.S. Steenhuis. 1999. Modeling Solute Transport in a Water Repellent Soil. Journal of Hydrology 215:188-201.
  4. Nguyen, H.V., J.L. Nieber, C.J. Ritsema, L.W. Dekker, and T.S. Steenhuis. 1999. Modeling Gravity Driven Unstable Flow in a Water Repellent Soil. Journal of Hydrology 215:202-214.
  5. Ogawa, S., P. Baveye, C.W. Boast, J.-Y. Parlange, and T.S. Steenhuis. 1999. Surface Fractal Characteristics of Preferential Flow Patterns in Field Soils: Evaluation and Effect of Image Processing. Geoderma 88:109-136.
  6. Steenhuis, T.S., M.B. McBride, B.K. Richards, and E. Harrison. 1999. Trace Metal Retention in the Incorporation Zone of Lane-Applied Sludge. Environmental Science and Technology 33:1171-1174.
  7. Frankenberger, J.R., E.S. Brooks, M.T. Walter, M.F. Walter, and T.S. Steenhuis. 1999. A GIS-Based Variable Source Area Hydrology Model. Hydrological Processes 13:805-822.
  8. Parlange, J.-Y., T.S. Steenhuis, R. Haverkamp, D.A. Barry, P.J. Culligan, W.L. Hogarth, M.B. Parlange, P. Ross, and F. Stagnitti. 1999. Soil Properties and Water Movement. Chapter 4, In: Vadose Zone Hydrology - Cutting Across Disciplines, M.B. Parlange and J.W. Hopmans, Eds. Oxford University Press, New York, NY. pp. 99-129.
  9. Nektarios, P.A., T.S. Steenhuis, A.M. Petrovic, and J.-Y. Parlange. 1999. Fingered Flow in Laboratory Golf Putting Greens. Journal of Turfgrass Management 3:53-67.
  10. McBride, M.B., B.K. Richards, T.S. Steenhuis, G. Spiers. 1999. Long-Term Leching of Trace Elements in a Heavily Sludge-Amended Silty Clay Loam Soil. Soil Science 164:613-623.
  11. Kuo, W.-L., T.S. Steenhuis, C.E. McCulloch, C.L. Mohler, D.A. Weinstein, S.D. DeGloria, and D.P. Swaney. 1999. Effect of Grid Size on Runoff and Soil Moisture for a Variable-Source-Area Hydrology Model. Water Resources Research 35:3419-3428.
  12. Ogden, C.B., H.M. van Es, R.J. Wagenet, and T.S. Steenhuis. 1999. Spatial-Temporal Variability of Preferential Flow in a Clay Soil under No-Till and Plow-Till. Journal of Environmental Quality 28:1264-1273.
  13. DiCarlo, D.A., T.W.J. Bauters, C.J.G. Darnault, T.S. Steenhuis, and J.-Y. Parlange. 1999. Rapid Determination of Constitutive Relations with Fingered Flow. In: Proc. Int. Workshop Characterization and Measurement of the Hydraulic Properties of Unsaturated Porous Media, M.Th. Van Genuchten, F.J. Leij, and L. Wu, Eds. Univ. of Riverside, CA. pp. 433-440.
  14. DiCarlo, D.A., T.W.J. Bauters, C.J.G. Darnault, E. Wong, B.R. Bierck, T.S. Steenhuis, and J.-Y. Parlange. 2000. Surfactant-Induced Changes in Gravity Fingering of Water Through a Light Oil. J. Contam. Hydrol. 41:317-334.
  15. Bauters, T.W.J., T.S. Steenhuis, D.A. DiCarlo, J.L. Nieber, L.W. Dekker, C.J. Ritsema, J.-Y. Parlange, and R. Haverkamp. 2000. Physics of Water Repellent Soils. J. Hydrol. 231-232:233-243.
  16. Bauters, T.W.J., D.A. DiCarlo, T.S. Steenhuis, and J.-Y. Parlange. 2000. Soil Water Content Dependent Wetting Front Characteristics in Sands. J. Hydrol. 231-232:244-254.
  17. Nieber, J.L., T.W.J. Bauters, T.S. Steenhuis, and J.-Y. Parlange. 2000. Numerical Simulation of Experimental Gravity-Driven Unstable Flow in Water Repellent Sand. J. Hydrol. 231-232:295-307.
  18. Culligan, P.J., D.A. Barry, J.-Y. Parlange, T.S. Steenhuis, and R. Haverkamp. 2000. Infiltration with Controlled Air Escape. Water Resour. Res. 36:781-785.
  19. Walter, M.T., J.-S. Kim, T.S. Steenhuis, J.-Y. Parlange, A. Heilig, R.D. Braddock, J.S. Selker, and J. Boll. 2000. Funneled Flow Mechanisms in a Sloping Layered Soil: Laboratory Investigation. Water Resour. Res. 36:841-849.
  20. Richards, B.K., T.S. Steenhuis, J.H. Peverly, and M.B. McBride. 2000. Effect of Sludge Processing Mode, Soil Texture and Soil pH on Metal Mobility in Undisturbed Soil Columns under Accelerated Loading. Env. Poll. 109:327-346.
  21. Kung, K.-J.S., T.S. Steenhuis, E.J. Kladivko, T.J. Gish, G. Bubenzer, and C.S. Helling. 2000. Impact of Preferential Flow on the Transport of Adsorbing and Non-Adsorbing Tracers. Soil Sci. Soc. Am. J. 64:1290-1296.
  22. Brooks, A.S., M.N. Rozenwald, T.S. Steenhuis, L.D. Geohring, and L.W. Lion. 2000. Phosphorus Removal by Wollastonite: A Constructed Wetland Substrate. Ecological Engr. 15:121-132.
  23. McBride, M.B., B.K. Richards, T.S. Steenhuis, and G. Spiers. 2000. Molybdenum Uptake by Forage Crops Grown on Sewage Sludge-Amended Soils in the Field and Greenhouse. J. Env. Qual. 29:848-854.
  24. Kung, K.-J.S., E.J. Kladivko, T.J. Gish, T.S. Steenhuis, G. Bubenzer, and C.S. Helling. 2000. Quantifying Preferential Flow by Breakthrough of Sequentially Applied Tracers: Silt Loam Soil. Soil Sci. Soc. Am. J. 64:1296-1304.
  25. Chao, W.-L., J.-Y. Parlange, and T.S. Steenhuis. 2000. An Analysis of the Movement of Wetting and Nonwetting Fluids in Homogeneous Porous Media. TIPM 41:121-135.
  26. Walter, M.T., M.F. Walter, E.S. Brooks, T.S. Steenhuis, J. Boll, and K.R. Weiler. 2000. Hydrologically Sensitive Areas: Variable Source Area Hydrology Implications for Water Quality Risk Assessment. J. Soil Water Cons. 55(3):277-284.
  27. Parlange, J.-Y., F. Stagnitti, A. Heilig, J. Szilagyi, M.B. Parlange, T.S. Steenhuis, W.L. Hogarth, D.A. Barry, and L. Li. 2001. Sudden Drawdown and Drainage of a Horizontal Aquifer. Water Resour. Res. 37:2097-2101.
  28. Heilig, A., D. DeBruyn, M.T. Walter, C.W. Rose, J.-Y. Parlange, T.S. Steenhuis, G.C. Sander, P.B. Hairsine, W.L. Hogarth, and L.P. Walker. 2001. Testing a Mechanistic Soil Erosion Model with a Simple Experiment. J. Hydrol. 244:9-16.
  29. Stagnitti, F., L. Li, D.A. Barry, G. Allinson, J.-Y. Parlange, T.S. Steenhuis, and E. Lakshmanan. 2001. Modelling Solute Transport in Structured Soils: Performance Evaluation of the ADR and TRM Models. Mathematical and Computer Modelling 34:433-440.
  30. Darnault, C.J.G., D.A. DiCarlo, T.W.J. Bauters, A.R. Jacobson, J.A. Throop, C.D. Montemagno, J.-Y. Parlange, and T.S. Steenhuis. 2001. Measurement of Fluid Contents by Light Transmission in Transient Three-Phase Oil-Water-Air Systems in Sand. Water Resour. Res. 37:1859-1868.
  31. Steenhuis, T.S., J. Caldero Rivera, C.J. Martinez Hernández, M.T. Walter, R.B. Bryant, and P. Nektarios. 2001. Water Repellency in New York State Soils. Int. Turfgrass Soc. Res. J. 9:624-628.
  32. Kim, S.J. and T.S. Steenhuis. 2001. GRIEROM: Grid-Based Variable Source Area Soil-Water Erosion and Deposition Model. ASAE Trans. 44:853-862.
  33. Kim, S.J. and T.S. Steenhuis. 2001. GRISTORM: Grid-Based Variable Source Area Storm Runoff Model. ASAE Trans. 44:863-875.
  34. Siepel, A.C.,T.S. Steenhuis, C.W. Rose, J.-Y. Parlange, and G.F. McIsaac. 2002 A Simplified Hillslope Erosion Model with Vegetation Elements for Practical Applications. J. Hydrol. 258:111-121.
  35. Culligan, P.J., K. Banno, D.A. Barry, T.S. Steenhuis, and J.-Y. Parlange. 2002. Preferential Flow of a Nonaqueous Phase Liquid in Dry Sand. J. Geotech. and Geoenviron. Engr. 128:327-337.
  36. Geohring, L.D., O.V. McHugh, M.T. Walter, T.S. Steenhuis, M.S. Akhtar, and M.F. Walter. 2001. Phosphorus Transport into Subsurface Drains by Macropores after Manure Applications: Implications for Best Manure Management Practices. Soil Sci. 12:896-909.
  37. Walter, M.T., E.S. Brooks, M.F. Walter, T.S. Steenhuis, C.A. Scott, and J. Boll. 2001. Evaluation of Soluble Phosphorus Loading from Manure-Applied Fields Under Various Spreading Strategies. J. Soil Water Cons. 56:329-335.
  38. Parlange, J.-Y., T.S. Steenhuis, L. Li, D.A. Barry, and F. Stagnitti. 2002. Column Flow in Stratified Soils and Fingers in Hele-Shaw Cells: A Review. In: Environmental Mechanics: Water, Mass and Energy Transfer in the Biosphere, P.A.C. Raats, D. Smiles, and A.W. Warrick, Eds. AGU Geophysical Monograph 129:79-85.
  39. Walter, M.T., T.S. Steenhuis, V.K. Mehta, D. Thongs, M. Zion, and E. Schneiderman. 2002. Refined Conceptualization of TOPMODEL for Shallow Subsurface Flows. Hydrol. Proc. 16:2041-2046.
  40. Mendoza, G. and T.S. Steenhuis. 2002. Determination of Hydraulic Behavior of Hillsides with an Hillslope Infiltrometer. Soil Sci. Soc. Am. J. 66:1501-1504.
  41. Nektarios, P.A., A.M. Petrovic, and T.S. Steenhuis. 2002. Effect of Surfactant on Fingered Flow in Laboratory Golf Greens. Soil Sci. 167:572-579.
  42. Stomph, T.J., N. De Ridde, T.S. Steenhuis, and N.C. van de Giesen. 2002. Scale Effects of Hortonian Overland Flow and Rainfall Runoff Dynamics: Laboratory Validation of a Process Based Model. Earth Surface Processes and Landform 27:847-855.
  43. Montalto, F.A., T.S. Steenhuis, and J.-Y. Parlange. 2002. The Restoration of Tidal Marsh Hydrology. In: Environmental Problems in Coastal Regions IV, C.A. Brebbia, Ed. Wessex Institute of Technology Press, Southampton, UK. pp. 35-47.
  44. Darnault, C.J.G., D.A. DiCarlo, T.W.J. Bauters, T.S. Steenhuis, J.-Y. Parlange, C.D. Montemagno, and P. Baveye. 2002. Visualization and Measurements of Multiphase Flow in Porous Media Using Light Transmission and Synchrotron X-Rays. Ann. N.Y. Acad. Sci. 972:103-110.
  45. McBride, M.B., E.A. Nibarger, B.K. Richards, and T.S. Steenhuis. 2003. Trace Metal Accumulation by Red Clover Grown on Sewage Sludge-Amended Soils and Correlation to Mehlich 3 and Calcium Chloride-Extractable Metals. Soil Sci. 168:29-38.
  46. Akhtar, M.S., T.S. Steenhuis, P.A. Medrano, M. deGroot, and B.K. Richards. 2003. Dissolved Phosphorus Losses from Undisturbed Soil Cores: Related to Adsorption Strength, Flow Rate, or Soil Structure? Soil Sci. Soc. Am. J. 67:458-470.
  47. Evans, E.M., D.R. Lee, R.N. Boisvert, B. Arce, T.S. Steenhuis, M. Prano, and S.V. Poats. 2003. Achieving Efficiency and Equity in Irrigation Management: An Optimization Model of the El Angel Watershed, Carchi, Ecuador. Agr. Sys. 77:1-22.
  48. Gao, B., M.T. Walter, T.S. Steenhuis, J.-Y. Parlange, K. Nakano, C.W. Rose, and W.L. Hogarth. 2003. Investigating Ponding Depth and Soil Detachability for a Mechanistic Erosion Model Using a Simple Experiment. J. Hydrol. 277:116-124.
  49. Walter, M.T., V.K. Mehta, A.M. Marrone, J. Boll, T.S. Steenhuis, and M.F. Walter. 2003. Simple Estimation of Prevalence of Hortonian Flow in New York City Watersheds. ASCE J. Hydrol. Engr. 8:214-218.
  50. Masiyandima, M.C., S. Diatta, N. van de Giesen, P.N. Windmeijer, and T.S. Steenhuis. 2003. The Hydrology of Inland Valleys in the Sub-Humid Zone of West Africa: Runoff Processes in the M’bé Experimental Watershed. Hydrol. Proc. 17:1213-1225.
  51. Wells, R.R., D.A. DiCarlo, T.S. Steenhuis, J.-Y. Parlange, M.J.M. Römkens, and S.N. Prasad. 2003. Infiltration and Surface Geometry Features of a Swelling Soil Following Successive Simulated Rainstorms. Soil Sci. Soc. Am. J. 67:1344-1351.
  52. Darnault, C.J.G., P. Garnier, Y.-J. Kim, K.L. Oveson, T.S. Steenhuis, J.-Y. Parlange, M. Jenkins, W.C. Ghiorse, and P. Baveye. 2003. Preferential Transport of Cryptosporidium Parvum Oocysts in Variably-Saturated Subsurface Environments. Water Env. Res. 75:113-120.
  53. Qureshi, S., B.K. Richards, A.G. Hay, C.C. Tsai, M.B. McBride, P. Baveye, and T.S. Steenhuis. 2003. Effect of Microbial Activity on Trace Element Release from Sewage Sludge. Env. Sci. Tech. 37:3361-3366.
  54. Kendy, E., Y. Zhang, C. Liu, and T.S. Steenhuis. 2003. A Soil-Water Balance Approach to Quantify Ground-Water Recharge from Irrigated Cropland in the North China Plain. Hydrol. Proc. 17:2011-2031.
  55. Mendoza, G.F., T.S. Steenhuis, M.T. Walter, and J.-Y. Parlange. 2003. Estimating Basin-Wide Hydraulic Parameters of a Semi-Arid Mountainous Watershed by Recession-Flow Analysis. J. Hydrol. 270:57-69.
  56. Stagnitti, F., N. Villiers, J.-Y. Parlange, T.S. Steenhuis, G.H. de Rooij, L. Li, D.A. Barry, X. Xiong and P. Li. 2003. Solute and Contaminant Transport in Heterogeneous Soils. Bull. Environ. Contam. Toxicol. 71:737-745.
  57. Deinert, M., J.-Y. Parlange, K.B. Cady, T.S. Steenhuis, and J.S. Selker. 2003. Comment on “On the Continuum-Scale Modeling of Gravity Driven Fingers in Unsaturated Porous Media: The Inadequacy of the Richards Equation with Standard Monotonic Constitutive Relations and Hysteretic Equations of State” by Eliassi and Glass. Water Resour. Res. 39(9):Art. No.1263.
  58. Qureshi, S., B.K. Richards, M.B. McBride, P. Baveye, and T.S. Steenhuis. 2003. Temperature and Microbial Activity Effects on Trace Element Leaching from Metalliferous Peats. J. Env. Qual. 32:2067-2075.
  59. Akhtar, M.S., T.S. Steenhuis, B.K. Richards, and M.B. McBride. 2003. Chloride and Lithium Transport in Large Arrays of Undisturbed Silt Loam and Sandy Loam Soil Columns. Vadose Zone J. 2:715-727.
  60. Heilig, A., T.S. Steenhuis, M.T. Walter, and S. Herbert. 2003. Funneled Flow Mechanisms in Layered Soil: Field Investigations. J. Hydrol. 279:210-223.
  61. Johnson, M.S., W.F. Coon, V.K. Mehta, T.S. Steenhuis, E.S. Brooks, and J. Boll. 2003. Application of Two Hydrologic Models with Different Runoff Mechanisms to a Hillslope Dominated Watershed in the Northeastern U.S.: A Comparison of HSPF and SMR. J. Hydrol. 284:57-76.
  62. Walter, M.T., V.K. Mehta, A.M. Marrone, J. Boll, P. Gerard-Marchant, T.S. Steenhuis, and M.F. Walter. 2004. Simple Estimation of Prevalence of Hortonian Flow in New York City Watersheds. J. Hydrol. Engr. 9:70-70.
  63. Montalto, F.A., and T.S. Steenhuis. 2004. The link between hydrology and restoration of tidal marshes in the New York/New Jersey estuary. Wetlands. 24:414-425.
  64. Qureshi, S., B.K. Richards, T.S. Steenhuis, M.B. McBride, P. Baveye, and S. Dousset. 2004. Microbial acidification and pH effects on trace element release from sewage sludge. Environmental Pollution. 132:61-71.
  65. Stagnitti, F., L. Li, J.-Y. Parlange, W. Brutsaert, D.A. Lockington, T.S. Steenhuis, M.B. Parlange, D.A. Barry, W.L. Hogarth. 2004. Drying front in a sloping aquifer: Nonlinear effects. Water Resources Research. 40:W04601.
  66. Peranginangin, N., R. Sakthivadivel, N.R. Scott, E. Kendy, T.S. Steenhuis. 2004. Water accounting for conjunctive groundwater/surface water management: case of the Singkarak-Ombilin River Basin, Indonesia. J. Hydrol. 292:1-22.
  67. Gish, T.J., K.-J.S. Kung, D.C. Perry, J. Posner, G. Bubenzer, C.S. Helling, E.J. Kladivko, T.S. Steenhuis. 2004. Impact of Preferential Flow at Varying Irrigation Rates by Quantifying Mass Fluxes. J. Environ. Qual. 33:1033-1040.
  68. Srinivasan, M.S., P. Gérard-Marchant, T.L. Veith, W.J. Gburek, T.S. Steenhuis. 2005. Watershed scale modeling of critical source areas of runoff generation and phosphorus transport. J. Amer. Water Resou. Assoc. 41:361-375.
  69. Agnew, L. J., S. Lyon, P. Gerard-Marchant, V.B. Collins, A.J. Lembo, T.S. Steenhuis, M.T. Walter. 2006. Identifying hydrologically sensitive areas: bridging the gap between science and application. J. Environ. Manag. 78:63-76.
  70. Collick, A.S., Z.M. Easton, F.A. Montalto, B. Gao, Y. Kim, L. Day, T.S. Steenhuis. 2006. Hydrological Evaluation of Septic Disposal Field Design in Sloping Terrains. Journal of Environmental Engineering, 132:10(2006). ISSN 0733-9372/2006/10-1289–1297.
  71. Collick A.S. , E.A. Fogarty, P.E. Ziegler, M.T. Walter, D.D. Bowman, T.S. Steenhuis. 2006. Survival of Cryptosporidium parvum oocysts in calf housing facilities in the New York City watersheds. Journal of Environmental Quality 35 (2): 680-687.
  72. Easton, Z.M., P. Gerard-Marchant, M.T. Walter, A.M. Petrovic, T.S. Steenhuis. 2006. Hydrologic assessment of an urban variable source watershed in the northeast US. Water Resour. Res. (In Press).
  73. Gérard-Marchant, P., W.D. Hively, T.S. Steenhuis. 2006. Distributed hydrological modeling of total dissolved phosphorus transport in an agricultural landscape, part I: distributed runoff generation. Hydrol. Earth Sys. Sci.10:245-261.
  74. Gérard-Marchant, P., M.T. Walter, T.S. Steenhuis. 2005. Simple models for phosphorus loss from manure during rainfall. J. Environ. Qual. 34:872-876.
  75. Hively, W.D., P. Gérard-Marchant, T.S. Steenhuis. 2006. Distributed hydrological modeling of total dissolved phosphorus transport in an agricultural landscape, part II: dissolved phosphorus transport. Hydrol. Earth Sys. Sci.10:263-276.
  76. Kim, Y.J., L.D. Geohring, J.H. Jeon, A.S. Collick, S.K. Giri, T.S. Steenhuis. 2006. Evaluation of the effectiveness of vegetative filter strips for phosphorus removal with the use of a tracer. Journal of Soil and Water Conservation 61 (5): 293-302.
  77. Kung, K.J.S., E.J. Kladivko, C.S Helling, T.J. Gish, T.S. Steenhuis, D.B. Jaynes. 2006. Quantifying the pore size spectrum of macropore-type preferential pathways under transient flow. Vadose Zone Journal 5 (3): 978-989 AUG 2006.
  78. Lyon, S.W., A.J. Lembo, M.T. Walter, T.S. Steenhuis. 2006. Defining probability of saturation with indicator kriging on hard and soft data. Advan. Water Resour. 29:181-93.
  79. Lyon, S.W., J. Seibert, A.J. Lembo, M.T. Walter, T.S. Steenhuis. 2006. Geostatistical investigation into the temporal evolution of spatial structure in a shallow water table. Hydrol. Earth Sys. Sci. 10:113-125.
  80. Lyon, S.W., M. McHale, M.T. Walter, T.S. Steenhuis. 2006. Effect of runoff generation mechanism on estimating land use control of P concentrations. J. Am. Water. Resour. Assoc. (in press).
  81. McDonald, A.J., S.J. Riha, J.M. Duxbury, T.S. Steenhuis, J. G. Lauren. 2006. Soil physical responses to novel rice cultural practices in the rice-wheat system: Comparative evidence from a swelling soil in Nepal Soil & Tillage Research 86 (2): 163-175.
  82. McDonald, A.J., S.J. Riha, J.M. Duxbury, T.S. Steenhuis, J.G. Lauren. 2006. Water balance and rice growth responses to direct seeding, deep tillage, and landscape placement: Findings from a valley terrace in Nepal Field Crops Research 95 (2-3): 367-382.
  83. Montalto, F. A., T.S. Steenhuis, J. Y. Parlange. 2006. "The Hydrology of Piermont Marsh, a Reference for Tidal Marsh Restoration in the Hudson River Estuary, New York." Journal of Hydrology 316, no. 1-4 (2006): 108-28.
  84. Nieber, J.L., T.S. Steenhuis, M.T. Walter, M. Bakker. 2006. Enhancement of seepage and lateral preferential flow by biopores on hillslopes. Biologia 61: S225-S228 Suppl. 19 2006.
  85. Schneiderman, E.M., T.S. Steenhuis, D.J. Thongs, Z.M. Easton, M.S. Zion, G.F. Mendoza, M.T. Walter, A.L. Neal. 2006. Incorporating variable source area hydrology into curve number based watershed loading functions. Hydrol. Proc. (In Press).
  86. Taylor, J.C., N. van de Giesen, T.S. Steenhuis. 2006. West Africa: Volta discharge data quality assessment and use. Journal Of The American Water Resources Association 42 (4): 1113-1126.
  87. DiCarlo, D. A., Y. Zevi, A. Dathe, S. Giri, B. Gao, T.S. Steenhuis. 2006. In situ measurements of colloid transport and retention using synchrotron X-ray fluorescence, Water Resour. Res., 42, W12S05, doi:10.1029/2005WR004850.
  88. Steenhuis, T.S., A. Dathe, Y. Zevi, J.L. Smith, B. Gao, S.B. Shaw, D. DeAlwis, S. Amaro-Garcia, R. Fehrman, M.E. Cakmak, I. Toevs, B.M. Liu, S.M. Beyer, J.T. Crist, A.G. Hay, B.K. Richards, J.F. McCarthy. 2006. Biocolloid retention in partially saturated soils. Biologia, Bratislava, 61/Suppl. 19: S229—S233.
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Keywords: BMP, cryptosporidium, hydrology, interflow, mathematical models, nonpoint source pollution, non-point source pollution, pathogens, phosphorus, plant growth, runoff calculations, USGS, water flow, watersheds