Reid David Christianson

Research Assistant Professor

Dr. Christianson studies regional and national impacts of landscape decisions (agricultural and urban) on water quality. This work relies on collaborative partnerships and data-driven approaches to quantify benefits—water quality and other—provided by conservation practices. He also has expertise in water movement through the natural and man-made environment and stormwater management.

Primary Disciplines

Education

  • B.S.: Biological and Agricultural Engineering, Kansas State University, 2001
  • M.S.: Biological and Agricultural Engineering, Kansas State University, 2003
  • Ph.D.: Biosystems Engineering, Oklahoma State University, 2012

Academic Positions

  • Research Engineer, Oklahoma State University, Department of Biosystems Engineering, 2003-2005
  • Urban Stormwater Specialist - Extension, Kansas State University, Department of Biological and Agricultural Engineering, 2005-2008
  • Extension Program Specialist, Iowa State University, Department of Agricultural and Biosystems Engineering, 2008-2012
  • Precision Agriculture Technician, Massey University, New Zealand, Department of Soil and Earth Sciences, 2010

Research Interests

  • Water quality
  • Agricultural conservation practices
  • Rural-Urban fringe interactions
  • Nutrient management

Chapters in Books

  • Struck, S., R. Traver, W.C. Huber, F. Lai, L. Clannon, M. Stouder, A. Brown, R.D. Christianson, B.J. Barfield, J.C. Hayes, G.O. Brown, and W.C. Lucas. (2013). BMP Modeling Techniques. In R. Field, S.D. Struck, A.N. Tafuri, M.A. Ports, M. Clar, S. Clark, and B. Rushton (eds.) BMP Technology in Urban Watersheds: Current and Future Directions. American Society of Civil Engineers (ISBN (PDF): 9780784471661, ch9). pp 219-268.

Selected Articles in Journals

  • Christianson, L., A. Castelló, R. Christianson, A. Bhandari, and M. Helmers. 2010. Hydraulic Property Determination of Denitrifying Bioreactor Fill Media. Applied Engineering in Agriculture. 26(5): 849‐854.
  • Qi, Z., M. J. Helmers, R. D. Christianson, C. H. Pederson. 2011. Nitrate-Nitrogen Losses through Subsurface Drainage under Various Agricultural Land Covers. Journal of Environmental Quality. 40: 1-8.
  • Hutchinson, S. L., T. Keane, R. D. Christianson, L. Skabeland, T. L. Moore, A. M. Greene, K. Kingery-Page. 2011. Management practices for the amelioration of urban stormwater. Procedia Environmental Sciences. 9. 83-89.
  • Moore, T., S. L. Hutchinson, R. D. Christianson. 2012. A Qualitative Assessment Tool for Ecologically based Stormwater Systems. Ecological Engineering. 45(8): 70-79.
  • Christianson, R. D., G. O. Brown, B. J. Barfield, J. C. Hayes. 2012. Development of a bioretention cell model and evaluation of input specificity on model accuracy. Transactions of the ASABE. 55(4):1213-1222.
  • Christianson, R. D., G. O. Brown, R. A. Chavez, D. E. Storm. 2012. Modeling Field-Scale Bioretention Cells with Heterogeneous Infiltration Media. Transactions of the ASABE. 55(4): 1193-1202.
  • Helmers, M., R. Christianson, G. Brenneman, D. Lockett, C. Pederson. 2012. Water table, drainage, and yield response to drainage water management in southeast Iowa. Journal of Soil and Water Conservation. 67(6): 495-501.
  • Christianson, L., R. Christianson, M. Helmers, C. Pederson, A. Bhandari. 2013. Modeling and calibration of drainage denitrification bioreactor design criteria. Journal of Irrigation and Drainage Engineering. 139(9): 699-709. doi:10.1061/(ASCE)IR.1943-4774.0000622
  • Law, N. L, R. D. Christianson, L. Fraley-McNeal, G. Hoffmann. 2014. Building the Next Generation of Smart BMPs: Media Enhancements for Phosphorus Removal. Watershed Science Bulletin. 5(3). http://www.cwp.org/2013-04-07-14-40-38/past-issues
  • Kwon, H. Y., R. Christianson, K. Cappiella. 2015. Introduction to the Clean Water Optimization Tool: Calculate Pollutant Removal Capabilities and Costs of Stormwater Best Management Practices. Watershed Science Bulletin. 6(3). http://www.cwp.org/july-2015-abstract.
  • Christianson, R., L. Fraley-McNeal. 2016. Influence of Stormwater Infiltration Practices on Surrounding Structures. Watershed Science Bulletin. 7(1). http://www.cwp.org/influence-of-stormwater-infiltration-practices-on-surrounding-structures/.
  • Christianson, R. D., S. L. Hutchinson, and G. O. Brown. 2016. Curve Number Estimation Accuracy on Disturbed and Undisturbed Soils. Journal of Hydrologic Engineering. 21(2). 04015059.
  • Christianson, R., L. Christianson, C. Wong, M. Helmers, G. McIsaac, D. Mulla, M. McDonald. 2018. Beyond the nutrient strategies: Common ground to accelerate water quality improvement in the Upper Midwest. Journal of Environmental Management. 206: 1072-1080.

Other Publications

  • Christianson, R. 2013. Urbana Community Park Bioretention. Professional Engineering Design for Urban Stormwater Management, Urbana, Maryland.
  • Christianson, R., G. Hoffmann. 2013. Triangle Park Wetland. Professional Engineering Design for Urban Stormwater Management, Rising Sun, Maryland.
  • Christianson, R., G. Hoffmann, A. McCullough. 2014. Salisbury River Walk Living Shoreline and Bioretention. Professional Engineering Design for Urban Stormwater Management, Salisbury, Maryland.
  • Christianson, R., G. Hoffmann. 2013. Great Mills High School Bioretention. Professional Engineering Design for Urban Stormwater Management, Great Mills, Maryland.
  • Christianson, R., L. Gardner, G. Hoffmann, J. Batiata. 2013. Arlington County Composting Facility Infiltration. Professional Engineering Design for Urban Stormwater Management, Arlington, Virginia.
  • Cappiella, K, R. Christianson. 2014. Treatment Technologies for Contaminated Construction-Related Discharges. Runoff Rundown, Center for Watershed Protection, Inc.
  • Christianson, R. 2014. Can We Additive Our Way Out of too Much Pollution. Runoff Ramblings, Center for Watershed Protection, Inc.
  • Christianson, R., Lane Engineering. 2014. Mechlenberg Bioretention. Professional Engineering Design for Urban Stormwater Management, Easton, Maryland.
  • Christianson, R., L. Gardner. 2014. Greensboro Parking Bioretention. Professional Engineering Design for Urban Stormwater Management, Greensboro, Maryland.
  • Christianson, R., L. Gardner, G. Hoffmann. 2014. Denton DPW Bioretention. Professional Engineering Design for Urban Stormwater Management, Denton, Maryland.
  • Christianson, R., C. Wong. 2015. Pennwyn Playground Infiltration Trench. Professional Engineering Design for Urban Stormwater Management, Cumru, Pennsylvania.
  • Christianson, R. 2016. Ag of Future Past. Runoff Ramblings, Center for Watershed Protection, Inc.
  • Christianson, R., A. Daniels. 2016. Hood College Bioretention Facilities. Professional Engineering Design for Urban Stormwater Management, Frederick, Maryland.
  • Christianson, R., C. Wong, B. Stack. 2017. Talbot County Ditch Retrofit Project Suite (13 projects). Engineering Design for Rural Stormwater Management, Talbot County, Maryland.

Invited Lectures

  • Urban vs. Agricultural Watersheds
  • Reducing Runoff
  • Impact of Drainage on Downstream Flooding: Iowa 2008
  • Be Prepared to Manage Water... Excess and Drought
  • Iowa Nutrient Reduction Strategy: Background Information. Building Science Assessments for State-Level Nutrient Reduction Strategies
  • Get the Dirt on Stormwater: Introduction to Soil Factors in Stormwater Management
  • Background Information on the Iowa Nutrient Reduction Strategy
  • Tracking Agricultural and Urban Best Management Practices in the Kinnickinnic River Watershed
  • Sources of Sediment and Nutrients from the Riparian Corridor
  • Clean Water Optimization Tool for Maryland's Eastern Shore
  • Update and Demo - Clean Water Optimization Tool for Maryland's Eastern Shore
  • Watershed Modeling: Input Quality Counts
  • Stream Corridor Sediment Contribution
  • Retrofitting Existing Stormwater Ponds and Basins
  • Phase 6 Model Sediment Delivery Ratios and Urbanized Stream Source Ratio
  • Bioswales: Current, Planned, and Possible
  • Recommendations of the Expert Panel to Define Removal Rates for Disconnecting Existing Impervious Area Runoff from Stormwater Drainage Systems
  • State Strategies to Reduce Nitrogen and Phosphorus in the Gulf
  • Upper Mississippi Nutrient (Loss) Reduction Strategies
  • Nutrient Reduction Strategies & the role of drainage practices
  • Recommendations of the Expert Panel to Define Removal Rates for Disconnecting Runoff from Impervious Areas onto Amended Soils or Treatment in the Stormwater Conveyance System. New Crediting Approaches: Impervious Cover Disconnection and CMAC Webcast
  • Measuring Nonpoint Source Nutrient Reductions to the Mississippi River – Development Team Perspective: Regional Conservation Practice Tracking
  • Regional Conservation Practice Tracking
  • Conservation Practice Tracking for the Mississippi River Basin
  • Integrating Water Quality Improvements into Agricultural Production
  • Modeling for Water Quality
  • Enhanced Roadside Ditch Management
  • Tracking Urban Stormwater BMPs