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Mark Williams
National Soil Erosion Research
Research Agricultural Engineer

Phone: (765) 494-8694
Fax: (765) 494-5948
Room 158

275 SOUTH RUSSELL STREET
WEST LAFAYETTE , IN 479072077
Projects
Conservation Practice Impacts on Water Quality at Field and Watershed Scales
In-House Appropriated (D)
  Accession Number: 432501
Managing Agricultural Systems to Improve Agronomic Productivity, Soil, and Water Quality
In-House Appropriated (D)
  Accession Number: 435642
FY 2018 Conservation Effects Assessment Project (CEAP) - Benchmark Watershed Assessment Studies (on croplands)
Interagency Reimbursable Agreement (I)
  Accession Number: 435303
FY 2019 Conservation Effects Assessment Project (CEAP) - Benchmark Watershed Assessment Studies (on croplands)
Interagency Reimbursable Agreement (I)
  Accession Number: 435326
Effect of Hydrologic and Biogeochemical Processes on Sediment and Nutrient Transport
Non-Assistance Cooperative Agreement (S)
  Accession Number: 433224
Maintaining Water Quality Monitoring Infrastructure for the St. Joseph River Watershed Conservation Effects Assessment Project
Non-Assistance Cooperative Agreement (S)
  Accession Number: 434184
Coupling Temporally Explicit Geospatial Agronomic and Environmental Information
Non-Assistance Cooperative Agreement (S)
  Accession Number: 434780

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Evaluation of the Soil Vulnerability Index in drained agricultural land across eight CEAP watersheds -
Performance of the Soil Vulnerability Index with respect to slope, digital elevation model resolution, and hydrologic soil group -
Dye tracers reveal potential edge-flow effects in undisturbed lysimeters sealed with petrolatum -
Williams, M.R., McAfee, S.J., Kent, B.E. 2019. Dye tracers reveal potential edge-flow effects in undisturbed lysimeters sealed with petrolatum. Vadose Zone Journal. 8:190040. https://doi.org/10.2136/vzj2019.04.0040.
Evaluating hydrologic response in tile drained landscapes: Implications for phosphorus transport -
Macrae, M., Ali, G., King, K.W., Plach, J., Pluer, W., Williams, M.R., Morrison, M., Tang, W. 2019. Evaluating hydrologic response in tile drained landscapes: Implications for phosphorus transport. Journal of Environmental Quality. https://doi.org/10.2134/jeq2019.02.0060.
The past, present, and future of blind inlets as a surface water best management practice -
Penn, C.J., Gonzalez, J.M., Williams, M.R., Smith, D.R., Livingston, S.J. 2019. The past, present, and future of blind inlets as a surface water best management practice. Critical Reviews in Environmental Science Technology. https://doi.org/10.1080/10643389.2019.1642836.
Thresholds for runoff generation in a drained closed depression -
Williams, M.R., Livingston, S.J., Heathman, G.C., McAfee, S.J. 2019. Thresholds for runoff generation in a drained closed depression. Hydrological Processes. https://doi.org/10.1002/hyp.13477.
Reducing the impacts of agricultural nutrients on water quality across a changing landscape -
Peterson, H., Williams, M.R., Frankenberger, J., King, K.W., McGrath, J., Moody, L., Ribaudo, M., Strock, J. 2019. Reducing the impacts of agricultural nutrients on water quality across a changing landscape. Council for Agricultural Science and Technology Issue Paper. 64:1-60.
Nutrient balances influence hydrologic losses of nitrogen and phosphorus across agricultural fields in northwestern Ohio -
Hanrahan, B.R., King, K.W., Williams, M.R., Duncan, E.W., Pease, L.A., Labarge, G.A. 2019. Nutrient balances influence hydrologic losses of nitrogen and phosphorus across agricultural fields in northwestern Ohio. Nutrient Cycling in Agroecosystems. 113(3):231-245. https://doi.org/10.1007/s10705-019-09981-4.
Hydrologic assessment of blind inlet performance in a drained closed depression -
CEAP in the Cedar Creek watershed -
Williams, M.R., Livingston, S.J., Penn, C.J. 2018. CEAP in the Cedar Creek watershed. Laboratory Publication. 1(2):1-2.
Advancing the sustainability of US agriculture through long-term research -
Kleinman, P.J., Spiegal, S.A., Rigby Jr., J.R., Goslee, S.C., Baker, J.M., Bestelmeyer, B.T., Boughton, R., Bryant, R.B., Cavigelli, M.A., Derner, J.D., Duncan, E.W., Goodrich, D.C., Huggins, D.R., King, K.W., Liebig, M.A., Locke, M.A., Mirsky, S.B., Moglen, G.E., Moorman, T.B., Pierson Jr., F.B., Robertson, G., Sadler, E.J., Shortle, J., Steiner, J.L., Strickland, T.C., Swain, H., Williams, M.R., Walthall, C.L., Tsegaye, T.D. 2018. Advancing the sustainability of US agriculture through long-term research. Journal of Environmental Quality. 47(6):1412-1425. https://doi.org/doi:10.2134/jeq2018.05.0171.
A discussion on Mehlich-3 phosphorus extraction from the perspective of governing chemical reactions and phases: Impact of soil pH -
Penn, C.J., Rutter, E.B., Arnall, D.B., Camberato, J., Williams, M.R., Watkins, P. 2018. A discussion on Mehlich-3 phosphorus extraction from the perspective of governing chemical reactions and phases: Impact of soil pH. Agriculture. 8(7):106. https://doi.org/10.3390/agriculture8070106.
Dominant glacial landforms of the lower Great Lakes region exhibit different soil phosphorus chemistry and potential risk for phosphorus loss -
Plach, J.M., Macrae, M.M., Williams, M.R., Lee, B.D., King, K.W. 2018. Dominant glacial landforms of the lower Great Lakes region exhibit different soil phosphorus chemistry and potential risk for phosphorus loss. Journal of Great Lakes Research. 44:1057-1067. https://doi.org/10.1016/j.jglr.2018.07.005.
Assessing intra-event phosphorus dynamics in drainage water using phosphate stable oxygen isotopes -
Ford, W.I., Williams, M.R., Young, M.B., King, K.W., Fischer, E.N. 2018. Assessing intra-event phosphorus dynamics in drainage water using phosphate stable oxygen isotopes. Transactions of the ASABE. 61(4):1379-1392. https://doi.org/10.13031/trans.12804.
Integrating temporal inequality into conservation planning to improve practice design and efficacy -
Williams, M.R., King, K.W., Penn, C.J. 2018. Integrating temporal inequality into conservation planning to improve practice design and efficacy. Journal of the American Water Resources Association. 54(5):1029-1054. https://doi.org/10.1111/1752-1688.12662.
Isotopic (d18O/d2H) integrity of water samples collected and stored by automatic samplers -
Williams, M.R., Lartey, J.L., Sanders, L.L. 2018. Isotopic (d18O/d2H) integrity of water samples collected and stored by automatic samplers. Agricultural and Environmental Letters. 3:180009. doi:10.2134/ael2018.02.0009.
Controls of event-based nutrient transport within nested headwater agricultural watersheds of the western Lake Erie basin -
Williams, M.R., Livingston, S.J., Penn, C.J., Smith, D.R., King, K.W., Huang, C. 2018. Controls of event-based nutrient transport within nested headwater agricultural watersheds of the western Lake Erie basin. Journal of Hydrology. 559:749-761.
CEAP in the Cedar Creek watershed -
Williams, M.R., Livingston, S.J. 2018. CEAP in the Cedar Creek watershed. USDA-Agricultural Research Service, National Soil Erosion Research Laboratory, West Lafayette, IN. 1(1):1-2.
Fertilizer placement and tillage effects on phosphorus leaching in fine-textured soils -
Williams, M.R., King, K.W., Duncan, E.W., Pease, L.A., Penn, C.J. 2018. Fertilizer placement and tillage effects on phosphorus leaching in fine-textured soils. Soil and Tillage Research. 178:130-138.
Upland and in-stream controls on baseflow nutrient dynamics in tile-drained agroecosystem watersheds -
Ford, W.I., King, K.W., Williams, M.R. 2018. Upland and in-stream controls on baseflow nutrient dynamics in tile-drained agroecosystem watersheds. Journal of Hydrology. 556:800-812.
Phosphorus export from artificially drained fields across the Eastern corn belt -
Pease, L.A., King, K.W., Williams, M.R., Labarge, G.A., Duncan, E.W., Fausey, N.R. 2017. Phosphorus export from artificially drained fields across the Eastern corn belt. Journal of Great Lakes Research. doi.org/10.1016/j.jglr.2017.11.009.
Dissolved organic carbon loading from the field to watershed scale in tile-drained landscapes -
Williams, M.R., King, K.W., Fausey, N.R. 2017. Dissolved organic carbon loading from the field to watershed scale in tile-drained landscapes. Agricultural Water Management. 192:159-169.
A possible trade-off between clean air and clean water -
Smith, D.R., Stephensen, M., King, K.W., Jarvie, H.P., Haney, R.L., Williams, M.R. 2017. A possible trade-off between clean air and clean water. Journal of Soil and Water Conservation. 72(4):75A-79A. doi:10.2489/jswc.72.4.75A.
Addressing agricultural phosphorus loss in artificially drained landscapes with 4R nutrient management practices -
King, K.W., Williams, M.R., Smith, D.R., LaBarge, G.A., Reutter, J., Duncan, E.W., Pease, L.A. 2018. Addressing agricultural phosphorus loss in artificially drained landscapes with 4R nutrient management practices. Journal of Soil and Water Conservation. 73:35-47.
Linking soil phosphorus to dissolved phosphorus losses in the midwest Reprint Icon -
Duncan, E.W., King, K.W., Williams, M.R., LaBarge, G., Pease, L.A., Smith, D.R., Fausey, N.R. 2017. Linking soil phosphorus to dissolved phosphorus losses in the Midwest. Agricultural and Environmental Letters. doi: 10.2134/ael2017.02.0004.
Phosphorus availability in Western Lake Erie Basin drainage waters: legacy evidence across spatial scales -
King, K.W., Williams, M.R., Johnson, L.T., Smith, D.R., LaBarge, G.A., Fausey, N.R. 2017. Phosphorus availability in Western Lake Erie Basin drainage waters: legacy evidence across spatial scales. Journal of Environmental Quality. 46:466-469.
Modified APEX model for simulating macropore phosphorus contributions to tile drains -
Ford III, W.I., King, K.W., Williams, M.R., Confesor, R. 2016. Modified APEX model for simulating macropore phosphorus contributions to tile drains. Journal of Environmental Quality. doi:10.2134/jeq2016.06.0218.
Hydrologic and biogeochemical controls on phosphorus export from western Lake Erie tributaries Reprint Icon -
Williams, M.R., King, K.W., Baker, D., Johnson, L., Smith, D.R., Fausey, N.R. 2016. Hydrologic and biogeochemical controls on phosphorus export from western Lake Erie tributaries. Journal of Great Lakes Research. 42:1403-1411.
Imaging hydrological processes in headwater riparian seeps with time-lapse electrical resistivity -
Williams, M.R., Buda, A.R., Singha, K., Folmar, G.J., Elliott, H.A., Schmidt, J.P. 2016. Imaging hydrological processes in headwater riparian seeps with time-lapse electrical resistivity. Groundwater. 55(1):136-148. doi:10.1111/gwat.12461.
Edge-of-field evaluation of the Ohio phosphorus risk index -
Williams, M.R., King, K.W., Labarge, G., Confessor, R., Fausey, N.R. 2016. Edge-of-field evaluation of the Ohio phosphorus risk index. Journal of Environmental Quality. doi:10.2134/jeq2016.05.0198.
Framework to parameterize and validate APEX to support deployment of the nutrient tracking tool -
Moriasi, D.N., King, K.W., Bosch, D.D., Bjorneberg, D.L., Teet, S.B., Guzman, J.A., Williams, M.R. 2016. Framework to parameterize and validate APEX to support deployment of the nutrient tracking tool. Agricultural Water Management. 177:146-164.
Framework to parameterize and validate APEX to support deployment of the nutrient tracking tool -
Moriasi, D.N., Teet, S.B., Guzman, J.A., King, K.W., Bosch, D.D., Bjorneberg, D.L., Williams, M.R. 2016. Framework to parameterize and validate APEX to support deployment of the nutrient tracking tool. Agricultural Water Management. 177:146-164.
Decreasing phosphorus loss in tile-drained landscapes using flue gas desulfurization gypsum -
King, K.W., Williams, M.R., Dick, W.A., LaBarge, G.A. 2016. Decreasing phosphorus loss in tile-drained landscapes using flue gas desulfurization gypsum. Journal of Environmental Quality. 45(5):1722-1730. doi:10.2134/jeq2016.04.0132.
Assessment and synthesis of 50 years of published drainage phosphorus losses Reprint Icon -
Christianson, L.E., Harmel, R.D., Smith, D.R., Williams, M.R., King, K.W. 2016. Assessment and synthesis of 50 years of published drainage phosphorus losses. Journal of Environmental Quality. 45:1467-1477. doi:10.2134/jeq2015.12.0593.
Effect of tillage on macropore flow and phosphorus transport to tile drains -
Williams, M.R., King, K.W., Ford III, W.I., Buda, A.R., Kennedy, C.D. 2016. Effect of tillage on macropore flow and phosphorus transport to tile drains. Water Resources Research. 52:2868-2882.
Managing acute phosphorus loss with fertilizer source and placement: Proof of concept -
Smith, D.R., Harmel, R.D., Williams, M.R., Haney, R.L., King, K.W. 2016. Managing acute phosphorus loss with fertilizer source and placement: Proof of concept. Agricultural and Environmental Letters. 1:1. doi:10.2134/ael2015.12.0015.
Edge-of-field research to quantify the impacts of agricultural practices on water quality in Ohio -
Williams, M.R., King, K.W., Ford III, W.I., Fausey, N.R. 2016. Edge-of-field research to quantify the impacts of agricultural practices on water quality in Ohio. Journal of Soil and Water Conservation. 71:9A-12A.
Uncertainty in nutrient loads from tile drained landscapes: Effect of sampling frequency, calculation algorithm, and compositing strategies Reprint Icon -
Williams, M.R., King, K.W., Macrae, M.L., Ford III, W.I., Van Esbroeck, C., Brunke, R.I., English, M.C., Schiff, S.L. 2015. Uncertainty in nutrient loads from tile drained landscapes: Effect of sampling frequency, calculation algorithm, and compositing strategies. Journal of Hydrology. 530:306-316.
Effect of crop type and season on nutrient leaching to tile drainage under a corn-soybean rotation Reprint Icon -
King, K.W., Williams, M.R., Fausey, N.R. 2016. Effect of crop type and season on nutrient leaching to tile drainage under a corn-soybean rotation. Journal of Soil and Water Conservation. 71:56-58.
Linking nitrogen management, seep chemistry, and stream water quality in two agricultural headwater watersheds -
Williams, M.R., Buda, A.R., Elliott, H.A., Collick, A.S., Dell, C.J., Kleinman, P.J. 2015. Linking nitrogen management, seep chemistry, and stream water quality in two agricultural headwater watersheds. Journal of Environmental Quality. 44(3):910-920.
Sensitivity analysis of the agricultural policy/environmental extender (APEX) for phosphorus loads in tile-drained landscapes Reprint Icon -
Ford III, W.I., King, K.W., Williams, M.R., Williams, J., Fausey, N.R. 2015. Sensitivity analysis of the agricultural policy/environmental extender (APEX) for phosphorus loads in tile-drained landscapes. Journal of Environmental Quality. 44:1099-1110. DOI:10.2134/jeq2014.12.0527.
What is causing the harmful algal blooms in Lake Erie? Reprint Icon -
Smith, D.R., King, K.W., Williams, M.R. 2015. What is causing the harmful algal blooms in Lake Erie? Journal of Soil and Water Conservation. 70(2):27A-29A.
Sensitivity analysis of the Ohio phosphorus risk index Reprint Icon -
Williams, M.R., King, K.W., Dayton, E., LaBarge, G. 2015. Sensitivity analysis of the Ohio phosphorus risk index. Transactions of the ASABE. 58(1):93-102.
Influence of riparian seepage zones on nitrate variability in two agricultural headwater streams -
Williams, M.R., Buda, A.R., Elliott, H.A., Singha, K., Hamlett, J. 2015. Influence of riparian seepage zones on nitrate variability in two agricultural headwater streams. Journal of the American Water Resources Association. 51(4): 883-897. doi: 10.1111/1752-1688.12335.
Drainage water management effects on tile dicharge and water quality -
Williams, M.R., King, K.W., Fausey, N.R. 2015. Drainage water management effects on tile dicharge and water quality. Agricultural Water Management. 148:43-51.
Drainage water management effects on tile discharge and water quality Reprint Icon -
Williams, M.R., King, K.W., Fausey, N.R. 2014. Drainage water management effects on tile discharge and water quality. Agricultural Water Management. 148:43-51.
Contributions of systematic tile drainage to watershed scale phosphorus transport Reprint Icon -
King, K.W., Williams, M.R., Fausey, N.R. 2014. Contributions of systematic tile drainage to watershed scale phosphorus transport. Journal of Environmental Quality. 44:486-494. DOI:10.2134/jeq2014.04.0149.
Phosphorus transport in agricultural subsurface drainage: A review -
King, K.W., Williams, M.R., Macrae, M.L., Fausey, N.R., Smith, D.R., Frankenberger, J., Kleinman, P.J., Brown, L.C. 2014. Phosphorus transport in agricultural subsurface drainage: A review. Journal of Environmental Quality. 44(2):467-85. doi:10.2134/jeq2014.04.0163.
Effect of subsurface drainage on streamflow in an agricultural headwater watershed Reprint Icon -
King, K.W., Fausey, N.R., Williams, M.R. 2014. Effect of subsurface drainage on streamflow in an agricultural headwater watershed. Journal of Hydrology. 519:438-445.
Groundwater flow path dynamics and nitrogen transport potential in the riparian zone of an agricultural headwater catchment -
Williams, M.R., Buda, A.R., Elliott, H., Hamlett, J., Boyer, E.W., Schmidt, J.P. 2014. Groundwater flow path dynamics and nitrogen transport potential in the riparian zone of an agricultural headwater catchment. Journal of Hydrology. 511:870-879.
Applying hydropedology to nutrient management in the northeastern US: lessons learned from the Mahantango Creek Experimental Watershed -
Buda, A.R., Williams, M.R., Folmar, G.J., Lin, H., Vitko, L.F., Kleinman, P.J., Bryant, R.B., Drohan, P.J. 2013. Applying hydropedology to nutrient management in the northeastern US: lessons learned from the Mahantango Creek Experimental Watershed [Abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 257-266.