My role is to manage NLAE’s long-term watershed monitoring networks, NLAE and ARS database projects, and UAS operations.  I’m passionate about utilizing innovative technology to advanced world class agricultural research. I grew up on a farm and enjoy camping, hiking and fishing.

• Publications

  • (Clicking on the reprint icon will take you to the publication reprint.)
  • USDA LTAR Common Experiment measurement: Dissolved ammonia (NH3) concentration -(Research Notes)
    Pisani, O., Kovar, J.L., Malone, R.W., Morrow, A.J., Cole, K.J. 2024. USDA LTAR Common Experiment measurement: Dissolved ammonia (NH3) concentration. Protocols.io. https://doi.org/10.17504/protocols.io.j8nlk8b61l5r/v1.
    
  • The LTAR Cropland Common Experiment at Upper Mississippi River Basin-Ames -(Peer Reviewed Journal)
    Kovar, J.L., Papanicolaou, A.N., Busch, D., Chatterjee, A., Cole, K.J., Dalzell, B.J., Emmett, B.D., Johnson, J.M., Malone, R.W., Morrow, A.J., Nowatzke, L.W., O'Brien, P.L., Prueger, J.H., Rogovska, N.P., Ruis, S.J., Todey, D.P., Wacha, K.M. 2024. The LTAR Croplands Common Experiment at Upper Mississippi River Basin - Ames. Journal of Environmental Quality. 53(6):978-988. https://doi.org/10.1002/jeq2.20646.
    
  • USDA LTAR common experiment measurement: overland flow -(Research Notes)
    Cole, K.J., Buda, A.R., Rice, P.J. 2024. USDA LTAR common experiment measurement: overland flow. Protocols.io. https://doi.org/10.17504/protocols.io.kxygxyk2zl8j/v1.
    
  • USDA LTAR Common Experiment measurement: Total nitrogen (TN) and total dissolved nitrogen (TDN) concentration -(Research Notes)
    Malone, R.W., Morrow, A.J., Pisani, O., Kovar, J.L., Hamilton, S.K., Cole, K.J. 2024. USDA LTAR Common Experiment measurement: Total nitrogen (TN) and total dissolved nitrogen (TDN) concentration. Protocols.io. https://doi.org/10.17504/protocols.io.5jyl82rkrl2w/v1.
    
  • USDA LTAR Common Experiment measurement: Total phosphorus (TP) and total dissolved phosphorus (TDP) concentration -(Research Notes)
    Hamilton, S.K., Pisani, O., Kovar, J.L., Malone, R.W., Morrow, A.J., Cole, K.J. 2024. USDA LTAR Common Experiment measurement: Total phosphorus (TP) and total dissolved phosphorus (TDP) concentration. Protocols.io. https://doi.org/10.17504/protocols.io.8epv5r7m6g1b/v1.
    
  • USDA LTAR Common Experiment measurement: Discharge from artificial subsurface drains -(Other)
    Feyereisen, G.W., King, K.W., Cole, K.J., Williams, M.R., Malone, R.W., Bosch, D.D. 2024. USDA LTAR Common Experiment measurement: Discharge from artificial subsurface drains. Protocols.io. https://doi.org/10.17504/protocols.io.x54v92ewzl3e/v1.
    
  • Saturated riparian buffers as promising edge-of-field conservation practice-(Abstract Only)
    Rogovska, N.P., Cole, K.J., Katuwal, S., Johnson, G., Malone, R.W., Jaynes, D., Isenhart, T. 2023. Saturated riparian buffers as promising edge-of-field conservation practice [abstract]. SWCS International Annual Conference.
    
  • Virtual tour of water quality research in the Iowa River’s South Fork Watershed-(Abstract Only)
    
    
  • Nitrate on a slow decline: Watershed water quality response during two decades of tallgrass prairie ecosystem reconstruction in Iowa -(Peer Reviewed Journal)
    Tomer, M.D., Shilling, K.E., Cole, K.J. 2019. Nitrate on a slow decline: Watershed water quality response during two decades of tallgrass prairie ecosystem reconstruction in Iowa. Journal of Environmental Quality. 48:579-585. https://doi.org/10.2134/jeq2018.07.0258.
    
  • Changes in lateral floodplain connectivity accompanying stream channel evolution: Implications for sediment and nutrient budgets -(Peer Reviewed Journal)
    Beck, W.J., Moore, P.L., Schilling, K.E., Wolter, C.F., Isenhart, T.M., Cole, K.J., Tomer, M.D. 2019. Changes in lateral floodplain connectivity accompanying stream channel evolution: Implications for sediment and nutrient budgets. Science of the Total Environment. 660:1015-1028. https://doi.org/10.1016/j.scitotenv.2019.01.038.
    
  • Combining sediment fingerprinting with age-dating sediment using fallout radionuclides for an agricultural stream, Walnut Creek, Iowa, USA -(Peer Reviewed Journal)
    Gellis, A.C., Fuller, C.C., Van Metre, P.C., Filstrup, C.T., Tomer, M.D., Cole, K.J., Sabitov, T. 2018. Combining sediment fingerprinting with age-dating sediment using fallout radionuclides for an agricultural stream, Walnut Creek, Iowa, USA. Journal of Soils and Sediments. p. 1-23. https://doi.org/10.1007/s11368-018-2168-z.
    
  • Soil nutrient variability and groundwater nitrate-N in agricultural fields -(Peer Reviewed Journal)
    Logsdon, S.D., Cole, K.J. 2018. Soil nutrient variability and groundwater nitrate-N in agricultural fields. Science of the Total Environment. 627:39-45. https://doi.org/10.1016/j.scitotenv.2018.01.182.
    
  • Distribution and mass balance of groundwater orthophosphorus in an agricultural watershed-(Peer Reviewed Journal)
    Shilling, K.E., Streeter, M.T., Isenhart, T.M., Beck, W.J., Tomer, M.D., Cole, K.J., Kovar, J.L. 2018. Distribution and mass balance of groundwater orthophosphorus in an agricultural watershed. Science of the Total Environment. 625:1330-1340.
    
  • Distribution and mass of groundwater orthophosphorus in an agricultural watershed -(Peer Reviewed Journal)
    Schilling, K.E., Streeter, M.T., Isenhart, T.M., Beck, W.J., Tomer, M.D., Cole, K.J., Kovar, J.L. 2018. Distribution and mass of groundwater orthophosphorus in an agricultural watershed. Science of the Total Environment. 625:1330-1340. https://doi.org/10.1016/j.scitotenv.2018.01.035.
    
  • Eleven years of runoff and phosphorus losses from two fields with and without manure application, Iowa, USA -(Peer Reviewed Journal)
    Tomer, M.D., Moorman, T.B., Kovar, J.L., Cole, K.J., Nichols, D.J. 2016. Eleven years of runoff and phosphorus losses from two fields with and without manure application, Iowa, USA. Agricultural Water Management. 168:104-111.
    
  • Challenges and progress in distributed watershed modeling: applications of the AgroEcoSystem-Watershed (AgES-W) model-(Proceedings)
    J.C. Ascough II, Tomer, M.D., Green, T.R., David, O., Cole. K.J., Kipka, H., and Porter, S.A. 2014. Challenges and progress in distributed watershed modeling: Applications of the AgroEcoSystem-Watershed (AgES-W) model. Procs. Third 21st Century Watershed Technology Conference and Workshop: Improving Water Quality and Environment, Paper No. 14-002, pgs. 1-8. DOI: 10.13031/wtcw.2014-002.DOI: 10.13031/wtcw.2014-002.
    
  • Runoff and phosphorus loads from two Iowa fields with and without applied manure, 2000-2011-(Abstract Only)
    Tomer, M.D., Moorman, T.B., Cole, K.J., Hatfield, J.L. 2012. Runoff and phosphorus loads from two Iowa fields with and without applied manure, 2000-2011 [abstract]. Soil and Water Conservation Society Conference Abstract Book. p. 22.
    
  • Runoff and phosphorus loads from two row-cropped fields with and without applied manure, 2000-2011-(Abstract Only)
    Tomer, M.D., Moorman, T.B., Cole, K.J., Hatfield, J.L. 2011. Runoff and phosphorus loads from two row-cropped fields with and without applied manure, 2000-2011. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 16-19, 2011, San Antonio, TX. CD-ROM.
    
  • Sustaining the Earth's watersheds, agricultural research data system-(Abstract Only)
    Steiner, J.L., Sadler, E.J., Hatfield, J.L., James, D.E., Cole, K.J., Wilson, G.J. 2011. Sustaining the Earth's watersheds, agricultural research data system [abstract]. Soil and Water Conservation Society, Modeling Summit, March 29-31, 2011, Denver, Colorado. Available: www.swcs.org/index.cfm?nodeID=31752&audienceID=1.
    
  • Source-pathway separation of multiple contaminants during a rainfall-runoff event in an artificially drained agricultural watershed-(Peer Reviewed Journal)
    Tomer, M.D., Wilson, C.G., Moorman, T.B., Cole, K.J., Herr, D., Isenhart, T.M. 2010. Source-pathway separation of multiple contaminants during a rainfall-runoff event in an artificially drained agricultural watershed. Journal of Environmental Quality. 39:882-895.
    
  • Hydrograph Separations can Identify Contaminant-Specific Pathways for Conservation Targeting in a Tile-Drained Watershed-(Abstract Only)
    Tomer, M.D., Moorman, T.B., Wilson, C.G., Cole, K.J., Isenhart, T.M. 2009. Hydrograph Separations can Identify Contaminant-Specific Pathways for Conservation Targeting in a Tile-Drained Watershed [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 1-5, 2009, Pittsburgh, PA.
    
  • Hydrograph Separations can Identify Contaminant-Specific Pathways for Conservation Targeting in a Tile-Drained Watershed-(Abstract Only)
    Tomer, M.D., Moorman, T.B., Wilson, C., Cole, K.J., Isenhart, T. 2009. Hydrograph Separations can Identify Contaminant-Specific Pathways for Conservation Targeting in a Tile-Drained Watershed [abstract]. Soil & Water Conservation Society (SWCS) Science 2 Solutions Conference. p. 58.
    
  • STEWARDS watershed data system: system design and implementation-(Peer Reviewed Journal)
    Steiner, J.L., Sadler, E.J., Wilson, G.J., Hatfield, J.L., James, D.E., Vandenberg, B.C., Chen, J., Oster, T., Ross, J.D., Cole, K.J. 2009. STEWARDS watershed data system: system design and implementation. Transactions of the ASABE. 52(5):1523-1533.
    
  • Floodplain Sediment Accretion and Stream-course Straightening Along the South Fork of the Iowa River-(Abstract Only)
    Tomer, M.D., Yan, B., James, D.E., Cole, K.J. 2009. Floodplain Sediment Accretion and Stream-course Straightening Along the South Fork of the Iowa River [abstract]. In: Dust Bowl to Mud Bowl: Sedimentation, Conservation Measures and the Future of Reservoirs. p. 49.
    
  • Floodplain Sediment Accretion and Stream-course Straightening Along the South Fork of the Iowa River-(Abstract Only)
    Tomer, M.D., Yan, B., James, D.E., Cole, K.J. 2009. Floodplain Sediment Accretion and Stream-course Straightening Along the South Fork of the Iowa River. Soil and Water Conservation Society Proceedings. Available: http://www.swcs.org
    
  • STEWARDS: A watershed data system-(Abstract Only)
    Steiner, J.L., Sadler, E.J., Wilson, G.J., James, D.E., Vandenberg, B.C., Ross, J.D., Oster, T., Cole, K.J., Chen, J., Hatfield, J.L. 2007. Stewards: A watershed data system [abstract]. ASA-CSSA-SSSA Annual. CD-ROM 2007.
    
  • Implications of a Conservation Practices Inventory for Water Quality in an Iowa Watershed-(Abstract Only)
    Tomer, M.D., Hadish, G., James, D.E., Cole, K.L. 2006. Implications of a Conservation Practices Inventory for Water Quality in an Iowa Watershed [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN. 2006 CDROM.
    
  • THE IOWA RIVER'S SOUTH FORK WATERSHED: TERRAIN, LAND USE, AND WATER QUALITY-(Abstract Only)
    Tomer, M.D., Burkart, M.R., James, D.E., Cole, K.J., Greenan, C.M., Green, C.H. 2004. The Iowa River's South Fork watershed: Terrain, land use, and water quality [CD-ROM]. ASA-CSSA-SSSA Proceedings. Madison, WI.
    
  • THE IOWA RIVER'S SOUTH FORK WATERSHED: TERRAIN, LAND USE, AND WATER QUALITY-(Popular Publication)
    Tomer, M.D., Burkart, M.R., James, D.E., Cole, K.J., Greenan, C.M., Green, C.H. 2004. The Iowa River's South Fork watershed: terrain, land use, and water quality. Soil and Water Conservation Society Proceedings. p. 15.
    
  • CHARACTERIZATION OF WATER AND NITRATE FLUXES FROM A TILE-DRAINED WATERSHED-(Abstract Only)
    TOMER, M.D., JAYNES, D.B., HATFIELD, J.L., COLE, K.J., DINNES, D.L., JAQUIS, R.J. CHARACTERIZATION OF WATER AND NITRATE FLUXES FROM A TILE-DRAINED WATERSHED. SOIL AND WATER CONSERVATION SOCIETY. 2002. V. 57(5). P. 325.
    
  • POTENTIAL IMPACT OF EARTHEN WASTE STORAGE STRUCTURES ON WATER RESOURCES IN IOWA-(Peer Reviewed Journal)
    SIMPKINS, W.W., BURKART, M.R., HELMKE, M.F., TWEDT, T.N., JAMES, D.E., JAQUIS, R.J., COLE, K.J. POTENTIAL IMPACT OF EARTHEN WASTE STORAGE STRUCTURES ON WATER RESOURCES IN IOWA. JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION. 2002. V. 38(3). P. 759-771.
    
  • FLOW-DURATION CHARACTERIZATION OF WATER AND NITRATE FLUXES FROM A TILE-DRAINED WATERSHED-(Abstract Only)
    TOMER, M.D., BURKART, M.R., JAYNES, D.B., JAQUIS, R.J., COLE, K.J., HATFIELD, J.L., DINNES, D.L. FLOW-DURATION CHARACTERIZATION OF WATER AND NITRATE FLUXES FROM A TILE-DRAINED WATERSHED. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2001. CD-ROM. MADISON, WI.
    
  • LONG TERM EXPERIENCE WITH QUALITY CONTROL PROCEDURES APPLIED TO METEOROLOGICAL DATA-(Proceedings)
    
    
  • SOIL CHARACTERISTICS RELATED TO AGRICHEMICAL CONCENTRATIONS AND OCCURRENCE IN GROUNDWATER OF THE MIDWEST U.S.-(Proceedings)
    
    
  • AGRICHEMICALS IN GROUNDWATER OF THE MIDWESTERN UNITED STATES: RELATIONS TO SOIL CHARACTERISTICS-(Peer Reviewed Journal)
    
    
  • AN INVESTIGATION OF THE HYDROGEOLOGIC SETTINGS OF SELECTED EARTHEN WASTE STORAGE SYSTEMS IN IOWA-(Other)
    
    

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