Ralph K. Davis, Ph.D.

 

Contact Information:

Department of Geosciences                                          Tele:     479-575-4515

113 Ozark Hall                                                             Fax:      479-575-3469

University of Arkansas                                                  E-mail: ralphd@uark.edu

Fayetteville, AR 72701                                                 URL: http://comp.uark.edu/~ralphd

USA                                                                            Departmental: http://geosciences.uark.edu

 

Education:

Ph.D.- University of Nebraska-Lincoln, 1992, Hydrogeology; Advisor, Darryll T. Pederson

M.S. - University of Nebraska-Lincoln, 1986, Hydrogeology; Advisor, Darryll T. Pederson

B.S. -  University of Nebraska-Lincoln, 1981, Major-Geology;  Minor-Geography: Meteorology/Climatology

 

Current Specialization:  Physical Hydrogeology, Groundwater Modeling, Contaminant Transport, Bacterial Fate and Transport, Water Resources Planning and Management

 

Courses Taught:

Physical Geology, Physical Geology Lab, Environmental Geology, Fundamentals of Hydrogeology, Environmental Site Assessment, Applied Field Methods in Hydrogeology, Geology Field Camp, Water Resource Issues, Hydrogeologic Modeling, Geochemistry, Geology For Engineers

 

Positions:

  • 2008-Present: Professor and Chair, Department of Geosciences, University of Arkansas
  • 2007-2008: Director, Arkansas Water Resources Center and Professor, Department of Geosciences, University of Arkansas
  • 2001-2007: Director, Arkansas Water Resources Center and Associate Professor, Department of Geosciences, University of Arkansas
  • 2000-2001: Associate Professor, Department of Geosciences, University of Arkansas
  • 1994-2000: Assistant Professor, Department of Geology, University of Arkansas
  • 1992-1994: Assistant Professor, Department of Earth Sciences and Physics, University of South Dakota
  • 1990-1992: Graduate Research Assistant, University of Nebraska, Department of Geology
  • 1989-1990: Graduate Teaching Assistant, University of Nebraska, Department of Geology
  • 1983-1989: Manager, Big Bend Groundwater Management District # 5, PO Box 7, Stafford, Kansas Duties:  Responsible for the establishment and implementation of policies, programs and budget of the Groundwater Management District under the supervision of an elected, nine member, board of directors.  Including: 1) establishment and implementation of regulatory programs,  2) coordination of programs with various local, state and federal water related agencies, and the public, 3)  initiation and implementation of hydrogeologic research within GMD #5, 4) provide input on water planning and policies in Kansas through the State Legislature and various committee assignments,  5)  provide testimony to the State Legislature, courts, and various state and federal agencies on water related matters in Kansas, 6) day to day administration of office and staff.

Professional Affiliations:

  • Fellow, Geological Society of America
  • Member, American Geophysical Union
  • Member, National Ground Water Association, Ground Water Scientists and Engineers
  • Member, Sigma Xi, The Scientific Research Society
  • Representative for UA, Consortium of Hydrologic Sciences, Inc (CUAHSI)

 

Honors and Recognition:

  • Distinguished Service Award, Geological Society of America, Hydrogeology Division, 2005
  • Elected Fellow Geological Society of America, 2003
  • Outstanding Professor, Department of Geology, University of Arkansas, 1996-1997
  • Nebraska Academy of Sciences - best student presentation, Earth Sciences section, 1992
  • Department of Geology, UNL - 1st place for student seminar, spring, 1991
  • Hoskens-Western-Sonderegger, Inc. (HWS) Ground Water Scholarship- Two Awards – 1989 -1991
  • Arthur T. Belfur Scholarship - 1989-1990
  • Phillips Petroleum Field Camp Scholarship - 1980

 

National Service:

  • Secretary/Treasurer, Hydrogeology Division, Geological Society of America, three terms: 2000-2002; 2002-2004; 2004-2006

·        GSA Ad Hoc Committee on Divisions and Affiliated Societies, 2006, Invited To Participate by GSA Executive Director

  • Representative for the University of Arkansas to the Consortium of Universities for the Advancement of Hydrological Sciences, Inc. (CUAHSI)
  • Joint Technical Program Chair, Hydrogeology Division, Geological Society of America Annual Meeting, 1998, Toronto, Canada

·        Session Co-Chair, Epikarst to Conduits: Quantitative Methods Applied To Monitoring and Modeling of Karst Aquifers,  Geological Society of America Annual Meeting 2006, Philadelphia, Pennsylvania

  • Session Co-Chair, Application of Biological and Hydrochemical Tracers in Groundwater Quality Investigations.  Geological Society of America Annual Meeting 2002, Denver, Colorado
  • Session Co-Chair, Hydrogeology VI: Biological and Colloidal Processes.  Geological Society of America Annual Meeting 2000, Reno, Nevada
  • Session Co-Chair, Hydrogeology I, Geological Society of America Annual Meeting 1995, New Orleans, Louisiana

 

Regional Service:

·        Member, Upper White River Bi-State Water Quality Committee, 2002-2005

·        Member, Department of Geosciences Alumni Advisory Board, University of Nebraska, 1999-2007

·        Chair, Department of Geosciences Alumni Advisory Board, University of Nebraska, 2000-2002

·        Session Chair, Hydrogeology, South-Central Meeting, Geological Society of America, Spring 2000, Fayetteville, Arkansas

 

Selected State Service:

  • Member, Beaver Lake Scientific Technical Advisory Group, Charged with Developing Water Quality Standards for Beaver Lake, Arkansas, Chaired by the Arkansas Department of Environmental Quality, 2005-2008
  • Member, Non-Point Source Management Task Force, Chaired by Arkansas Natural Resources Commission, 2000-2005
  • Member, Arkansas Groundwater Management and Protection Committee, Chaired by the Arkansas Natural Resources Commission
  • Member, Arkansas Source Water Assessment Technical Advisory Committee, Chaired by the Arkansas Department of Health and Environment, 1998-2003
  • Member, Vermillion Water Festival Steering Committee, University of South Dakota, Vermillion, South Dakota, 1993
  • Member, WINSM Coalition, a Five State Coalition of Upper Missouri River States with a Focus of Promoting Research and Other Activities in the Five WINSM States, 1993
  • Participant, U.S. EPA Pesticides and Groundwater Strategy, Study and Review Group, Kansas City, Missouri, 1988
  • Member, Kansas Commission on Applied Remote, Governor’s Appointment for the Groundwater Management Districts, 1985-1988
  • Member, Kansas Water Data Committee, Interagency Committee Charged with Coordinating Water Data Access and Establishing State Wide GIS.  Groundwater Management District Appointee, 1988
  • Member, Review Committee, State of Kansas Ground Water Quality Protection Strategy, Kansas Department of Health and Environment, Topeka, Kansas, 1988
  • Member, Dakota Aquifer Technical Committee.  An Interagency Committee Charged with Development of a Comprehensive Research Program for the Dakota Aquifer in Kansas.  Groundwater Management District Appointee, 1987-1989.
  • Member, Oil Field Surface Ponds Committee.  An Interagency and Industry Committee Charged with Defining Potential Impacts to Groundwater Quality Associated with the use of Drilling Pits, and Emergency Ponds used by the Oil and Gas Industry, 1987-1989
  • Member, Cedar Hills Sandstone Formation Study Group.  An Interagency and Industry Committee Charged with Assessing Potential Impacts to Groundwater Quality from Disposal of Oil Field Brine into the Permian Cedar Hills Sandstone Formation, 1986
  • President, Kansas Groundwater Management District Association, 1984-1986

 

Selected Departmental and University Service:

·        Chaired, Search Committee for New Faculty Hire in Geochemistry (2007)

·        Chaired, Departmental Personnel Committee (2006-2007)

·        Member, Departmental Personnel Committee (2003-2007)

·        Executive Secretary, Department of Geosciences External Advisory Board (2005-2007)

·        Member, Environmental Dynamics Steering Committee (2001-2009)

·        Member, UA Transit and Parking Advisory Committee (1999-2007)

·        Member, UA Public Safety Committee (2007-2009)

·        Geosciences-Geology library representative (1995-2009)

·        Environmental Dynamics library committee (1998-2009)

·        Member, Department of Geosciences Graduate Student Selection Committee (1994-2009)

·        Member, Department of Geosciences Student Awards Committee (2001-2009)

Invited Presentations:

Davis, R.K., 2004, Perspectives on Interdisciplinary Research.  Great Plains MidNet Conference, Omaha, Nebraska, February 23-25, 2004. (Invited)

Davis, R.K., J.V. Brahana, R. Pavlowsky, M. Matlock, I. Chaubey, and F. Gilzow, 2004, Proposed Ozark Plateau Province Hydrologic Observatory.  American Geophysical Union Annual Meeting, San Francisco, CA, December 2004. (Invited)

Davis, R.K., J.V. Brahana, R. Pavlowsky, and F. Gilzow, 2004, Ozark Plateau Province Hydrologic Observatory.  Consortium for the Advancement of Hydrologic Sciences Inc.  Logan, UT, September 2004. (Invited)

Davis, R.K., G.J. Thoma, J.V. Brahana, K. Whitsett, and T. Ting 2002, Groundwater Tracing in Mantled Karst, Savoy Experimental Watershed, Northwest Arkansas. Subsurface Science Symposium, Inland Northwest Research Alliance & Idaho National Engineering and Environmental Laboratory.  October 16 and 17, Boise, Idaho. (Invited)

Davis, R.K., K. Whitsett, G.J. Thoma, T. Tiong-Ee and J.V. Brahana, 2001, Bacterial and Sediment Tracing in Mantled Karst of Northwest Arkansas.  University of Nebraska-Lincoln, Department of Geosciences, Fall Colloquia, October 27. (Invited)

McGinnis, S., R.K. Davis, F. Kitto and E.Saul, 2000, Enhanced Resource Management Within Tribal Lands Utilizing GIS and GPS Technologies.  Southwestern Indian Polytechnic Institute, RGIS GIS Broadcast, November 14, 2000, Albuquerque, New Mexico. (Invited)

Davis, R.K. and S. McGinnis, 2000, Enhanced Resource Management Within Tribal Lands of Eastern Nebraska.  Tribal Groundwater and Pesticide Management Planning Workshop.  Native Ecology Initiative.  December 11-16, 2000, St. Petersburg, Florida. (Invited)

Davis, R.K., 2000, Groundwater Level Declines and Associated Management Strategies.  King Faisal University, Water Studies Center Seminar, February 24, 2000.  King Faisal University,  Hofuf, Saudi Arabia. (Invited)

 

Publications:

Thesis and Dissertation

Davis, R.K., 1992, The Waters’ Edge: Hydrochemical Interactions Between the Platte River and the Lincoln Municipal Well Field, Ashland, Nebraska. Ph.D. Dissertation, University of Nebraska, Lincoln, 245p.

Davis, R.K., 1986, Hydrogeologic Interrelationship of the Platte River and the Upper Big Blue River Basin in the Polk County Area of Nebraska.  M.S. Thesis, University of Nebraska, Lincoln, 120 p.

 

            Refereed Publications

Brahana, J.V. and R.K. Davis, In Final Review at USGS, Methodology for Delineating Ground-Water Recharge Areas of Springs in the Carbonate-Rock Terrain of Northwest Arkansas, and Application to Five Separate Spring Basins Within the Region.  U.S. Geological Survey Water Resources Investigation Report 99-xxxx.

Shepherd, S., J.C. Dixon and R.K. Davis, In Press, The Effect of Land Use on Channel Geometry and Sediment Distribution in Gravel Mantled Bedrock Streams, Illinois River watershed, Arkansas.  River Research and Applications, Manuscript ID RRA-09-0085.

Sharif, M.U., R.K. Davis, K.F. Steele, B. Kim, T.M. Kresse, P.D. Hays and J.A. Fazio, In Press, Surface Complexation Modeling for Predicting Solid-Phase Arsenic Concentrations in the Sediments of the Mississippi River Valley Alluvial Aquifer, Arkansas, USA.  Journal of Environmental Science and Health.

Sharif, M.U., R. K. Davis, K. F. Steele, B. Kim, T. M. Kresse, P.D. Hays and J.A. Fazio, 2008, Distribution and Variability of Redox Zones as Control of Spatial Variability of Arsenic in the Mississippi River Valley Alluvial Aquifer, Southeastern Arkansas. Journal of Contaminant Hydrology, 99 pp. 49-67.

Sharif, M.U., R. K. Davis, K. F. Steele, B. Kim, P. Hays, T. M. Kresse, and J.A. Fazio, 2008, Inverse Geochemical Modeling of Groundwater Evolution with Emphasis on Arsenic in the Mississippi River Valley Alluvial Aquifer, Arkansas (USA).  Journal of Hydrology, v. 350, Issue 1-2, pp. 41-55.

Tiong-Ee Ting, Gregory J. Thoma , Robert R. Beitle Jr., Ralph K. Davis, Rugkiat Perkins, Khursheed Karim and Hui-Min Liu, 2008, A Simple Substrate Feeding Strategy using a pH Control Trigger in Fed-Batch Fermentation. Applied Biochemistry and Biotechnology 149:89–98.

Davis, R.K., G.T. Thoma, R. Perkins, T. Unger, J.V. Brahana, and T. Ting, 2006, Basin Scale Modeling of Multiple Tracer Breakthrough in Fractured Limestone.  MODFLOW and More 2006: Managing Ground-Water Systems.  Editors: Poeter, Hill, and Zheng.  International Ground Water Modeling Center, Colorado School of Mines.  May 21-24, 2006, pp. 657-659.

Abro, I and R.K. Davis, 2006, Institutional Reforms in the Water Sector of Pakistan.  In: Ground Water and Surface Water Under Stress: Competition, Interaction, Solutions.  USCID (The U.S. Society for Irrigation and Drainage Professionals) Water Management Conference, Boise, Idaho— October 25-28, 2006, pp 293-309.

Davis, R.K., S. Hamilton, and J.V. Brahana, 2005, Escherichia Coli Survival in Springs and Streams of Mantled Karst Aquifers, Northwest Arkansas.  J. Amer. Water Resources Assoc., v. 41, n. 6, pp. 1279-1287.

Brahana, J.V., T. Ting, M. Al-Qinna, J. Murdock, R.K. Davis, J. Lainz, J.J. Killingbeck, E. Szilvagyi, M. Doheny-Skubic, I. Chaubey, P.D. Hays, and G. Thoma, 2005, Quantification of Hydrologic Budget Parameters for the Vadose Zone and Epikarst in Mantled Karst.  U.S. Geological Survey Karst Interest Group Proceedings, Rapid City, South Dakota, September 12-15, 2005, editor E.L. Kuniansky.  U.S. Geological Survey, Scientific Investigations Report 2005-5160, pp 144-152.

Davis, R.K., 2003, Book Review: Advances in Water Monitoring Research by Tamim Younos.  Journal of the American Water Resources Association v. 39, no.2, pp. 505-506.

Steele, K. F., R.K. Davis, and T.M. Kresse, 2003, Spatial and Temporal Nitrate Concentration Variability Within the Mississippi River Valley Alluvial Aquifer on a Small Scale at Selected Arkansas, USA Sites, Proceedings of the 7th International Water Association Conference on Diffuse Pollution and Basin Management (ed., Michael Bruen), Excel Print, Boyne House. Meath, Ireland, p. 7-33 to 7-38.

Steele, K. F., T.M. Kresse and R.K. Davis, 2003, Small-Scale Spatial Variation of Water Quality Within the Mississippi River Valley Alluvial Aquifer, Arkansas, USA “in” 4th Joint IH-CNC/CGS Groundwater Specialty Conference, Winnipeg, Manitoba, Canada.

Steele, K.F., R.K. Davis, J.V. Brahana, L. Godfrey, and G. Tatom, 2002, Research and Regulatory Water Quality Perspectives, Ozark Mountain Region, Arkansas.  Ground Water/Surface Water Interactions: American Water Resources Association Specialty Conference, pp. 199-204.

Peterson, E.W., R.K. Davis, J.V. Brahana and H.A. Orndorff, 2002, Movement of Nitrate Through Regolith Covered Karst.  Journal of Hydrology, 256, pp. 35-47.

M.G. Sutton, R.J. Couvillion, D.W. Nutter and R.K. Davis, 2002, Comparison of the Multi-Layer Borefield Design Algorithm (MLBDA) to available GCHP Benchmark Data.  Journal of the American Society of Heating and Air Conditioning, 4557, pp. 82-87.

M. G. Sutton, R.J. Couvillion, D.W. Nutter and R.K. Davis, 2002, An Algorithm for Approximating the Performance of Vertical Bore Heat Exchangers Installed in a Stratified Geological Regime.  Journal of the American Society of Heating and Air Conditioning, 4568, pp. 177-184.

McGinnis, S. and R.K. Davis, 2001, Domestic Well Water Quality Within Tribal Lands of Eastern Nebraska.  Environmental Geology, v. 41, n. 3-4 Pp. 321-329.

D. Nutter, R. Couvillion, R.K. Davis, J. Hemphill, M.G. Sutton, and K. Tan, 2001, Investigation of Borehole Completion Methods to Optimize the Environmental benefits of Ground-Coupled Heat Pumps.  ASHREAE 1016-RP.

Peterson, E.W., R.K. Davis and J.V. Brahana, 2000, The Use of Regression Analysis to Predict Nitrate-Nitrogen Concentrations in Springs of Northwest Arkansas.  In: Groundwater Flow and Contaminant Transport in Carbonate Aquifers, I.D. Sasowsky and C.M. Wicks, editors. AA Balkema, Rotterdam.  pp. 43-63.

Peterson, E.W., R.K. Davis and H.A. Orndorff, 2000, 17-b Estradiol as an Indicator of Animal Waste Contamination in Mantled Karst Aquifers. Journal of Environmental Quality, v. 29, n. 3, pp. 826-834.

Davis, R.K., J.V. Brahana, and J.S. Johnston, 1999, Ground Water in Northwest Arkansas: Minimizing Nutrient Contamination from Nonpoint Sources in Karst Terrain.  Report of Tasks 94-300 and 95-300 for Federal Assistance Project Nos. C9996103-02 and C9996102-03. Arkansas Soil and Water Conservation Commission.  Arkansas Water Resources Center Publication No. MSC-288, 172 p.

Marshall, D., J.V. Brahana and R.K. Davis, 1998, Resuspension of Viable Sediment-Bound Enteric Pathogens in Shallow Karst Aquifers.  In: Gambling With Groundwater-Physical, Chemical, and Biological Aspects of Aquifer-Stream Relations, Editors; J.V. Brahana, Y. Eckstein, L.K. Ongley, R. Schneider and J.E. Moore.  International Association of Hydrogeologists/American Association of Hydrogeologists, Proceedings Volume,  pp. 179-186.

Salisbury, D.O. and R.K. Davis, 1997, A Hydrochemical and Hydrogeological Connection Between the Decatur City Spring and Crystal Lake, Benton County, Arkansas.  Journal of the Arkansas Academy of Science, v. 51, pp. 159-168.

Davis, R.K., D.L. Iles, V.R. Schaefer, J.M. Kortran, B. Koch, E.W. Peterson, 1997, Hydrogeology and Hydrochemistry of Clayey Till at the Sioux Falls Landfill, Sioux Falls, South Dakota.  South Dakota Geological Survey, Open File Report 9-BAS, 186p.

Davis, R.K., N.J. Sinor and R.G. Monk, 1997, Impacts to Ground-Water Quality of Selected Springs in Northwest Arkansas.  In: Proceedings of the Arkansas Water Resources Center 1996 Research Conference, Diversity of Arkansas Water Resources Research, K.F. Steele, Editor.  Arkansas Water Resources Center Publication No. MSC-195, pp. 7-14.

Davis, R.K. and D.T. Pederson, 1996, Patterns of Groundwater Level Declines in Developed Aquifers.  Journal of the American Water Resources Association.  AWRA Paper Number 94134, v. 23, no. 1, pp.1-9.

Davis, R.K., D.T. Pederson, D.A. Blum and J.D. Carr, 1993, Atrazine in a Stream-Aquifer System: Estimation of Aquifer Properties From Atrazine Concentration Profiles.  Ground Water Monitoring and Remediation, v. 13, no. 2, pp. 134-141.

Blum, D.A., J.D. Carr, R.K. Davis and D.T. Pederson, 1993, Atrazine in a Stream-Aquifer System: Transport of Atrazine and its Environmental Impact near Ashland, Nebraska.  Ground Water Monitoring and Remediation v. 13, no. 2, pp. 125-133.

 

            Reports for Proprietary Agencies on Research Under Contract

*EPA or Other Agency Technical and Administrative Review

*Shepherd, S., R.K. Davis, A. Wilson and R. Morgan, 2008, Beaver Lake and Its Watershed 2008.  Beaver Water District, Arkansas, 44p. (This report was recognized by Northwest Arkansas Chapter of the Public Relations Society of America in the printed materials-publications category with an APEX award. The APEX awards recognize excellence in the public relations profession, particularly the use of exemplary communication practices in the general business community.) 

*Davis, R.K., E. Saul, F. Kitto and J. Valburg, 2007, Ten Elements of Santee Sioux Nation Water Quality Monitoring Program. Submitted to US EPA Region VII.  Santee Sioux Nation Open File Report OEA 121407, 84 p.

*Davis, R.K., J. Valburg, F. Kitto and E. Saul, 2007, Development of a Comprehensive Wetland Monitoring and Assessment Program Within the Santee Sioux Nation for the Protection of Vulnerable Wetlands and Aquatic Resources.  Report submitted to the USEPA in partial fulfillment of Assistance #BG98725901-4.  Santee Sioux Nation Open File Report OEA030607. 58 p.

*Davis, R.K. and S. Shepherd, 2007, Beaver Lake Water Quality Criteria Development: - Subpart A: Beaver Lake Use and Subpart B: Synthesis of State Water Quality Criteria For Lakes and Reservoirs and U.S. EPA Nutrient Criteria Approaches.  Submitted to Arkansas Department of Environmental Quality. 53 p.

*Laubhan, A, and R.K. Davis and J.V. Brahana, 2007, A Hydrogeologic and Water-Quality Evaluation of the Springfield Aquifer in the Vicinity of North-Central Washington County, Arkansas.  Final Technical Report Submitted to the Arkansas Department of Environmental Quality, 177 p.

*Davis, R.K., E. Saul, and F. Kitto, 2006, Santee Sioux Nation Tribal Water Quality Management Plan.  Report Submitted to EPA Assistance #I-98745201-1.  Santee Sioux Nation Open File Report, Santee, Nebraska, 19 p.

*Davis, R.K., E. Saul, and F. Kitto, 2006, Surface Water Quality Standards within the Reservation of the Santee Sioux Nation, 106 – Water Quality Management Program Development Of Tribal Water Quality Standards – Phase I. Report Submitted to EPA Assistance # I-98754201-1.  Santee Sioux Nation Open File Report, Santee, Nebraska, 41 p.

*Davis, R.K., T. Unger, S. McGinnis, E. Saul, and F. Kitto, 2003, Santee Sioux Nation: Hydrogeologic Assessment of the Bazile Creek and the Potential Southeast Well Fields.  Report Submitted for EPA Assistance #I-997109-99-0.  Santee Sioux Nation Open File Report, Santee, Nebraska. 76p.

*Davis, R.K., F. Kitto, and S. McGinnis, 2003, Santee Sioux Nation: Assessment of Comprehensive Tribal Wetland Program for Demonstrating Progress in Meeting “Core Essential Elements” of a Wetland Program.  Report submitted to the U.S. EPA in partial fulfillment of EPA Assistance # CD99781401-0. Santee Sioux Nation Open File Report WR012603. 24p.

Davis, R.K. and C.D. Cooper, 2002, Conceptual Model Development Beaver Lake Watershed, Northwest Arkansas.  CD-ROM containing maps, and vector and raster GIS data layers for the Beaver Lake Watershed.  Arkansas Water Resources Center.

Davis, R.K. and C.D. Cooper, 2002, GIS Dataset for Illinois River Watershed, Northwest Arkansas.  CD-Rom containing maps, and vector and raster GIS data layers for the Illinois River Watershed.  Arkansas Water Resources Center.

Wilson, A.D., R.K. Davis, C.D. Cooper, and K.F. Steele, 2002, Hyrochemical Characterization for the Sparta Aquifer in South-Central Arkansas. AWRC Miscellaneous Publication.

*Davis, R.K., S. McGinnis, S. Kitto, F. Kitto, A. Wilson, 2002, Santee Sioux Tribe of Nebraska: Establishment of Riparian Zone Demonstration Sites and Creation of Interagency Advisory Team for the Missouri River Bottomlands.  Santee Sioux Tribe of Nebraska Open File Report WR061502, 46p.

*Davis, R.K., S. McGinnis, F. Kitto, and A. Wilson, 2001, Santee Sioux Tribe of Nebraska Wetlands Conservation Planning Incorporating Delineation by Watershed and Assessment of Riparian Areas..  Santee Sioux Tribe of Nebraska Open File Report WR011601, 63p.

*Davis, R.K., S. McGinnis, F. Kitto, E. Saul, A. Wilson, 2001, Assessment of Water Quality on the Santee Sioux Reservation, May 1998-March 1999, and Tribal Water Quality Management Program.  Santee Sioux Tribe of Nebraska Open File Report WR070101. 80p.

Cooper, C.D., A. Wilson, R.K. Davis, K.F. Steel, 2001 Hydrochemical Characterization For the Alluvial and Sparta Aquifer of Eastern and South-Central Arkansas: Final Data Report.  Arkansas Water Resources Center Misc. Report.  63p.

*Davis, R.K., S. McGinnis, F. Kitto, E. Saul and J. Eckhoff, 1999, Baseline Assessment of Water Quality on the Santee Sioux Reservation 1996-1997 and Framework for Tribal Water Quality Plan. Santee Sioux Tribe of Nebraska Open File Report WR081699, 73p.

*U.S. Bureau of Reclamation, 1997, Needs Assessment: MR&I Water System Santee Indian Reservation, Nebraska.   U.S. Bureau of Reclamation, Nebraska-Kansas Area, Grand Island, Nebraska (my contribution was to several sections dealing with water quality). 79p.

*Davis, R.K., J.W. White and A. Twiss, 1996, Santee Sioux Tribe of Nebraska Wetlands Conservation Planning.  Final Technical Report for Environmental Protection Agency Assistance I.D. No. CD007851-01-0.  Santee Sioux Tribe of Nebraska Open File Report, 78p.

*Davis R.K., M.X. Versch, J.D. Carr, E.W. Peterson, D. Dormedy, M. Merrick and Q. Saunsoci, 1995, Baseline Assessment of Water Quality on the Reservation of the Omaha Tribe: Final Water Quality 106 Report.  EPA Assistance Agreement I007797-01-2.  Open File Report,      Environmental Protection Department, Omaha Tribe of Nebraska, Macy, Nebraska, 61p.

*Davis, R.K. and D.T. Pederson, 1993, Water Resources and Suggestions for Water Code Development, Omaha Indian Reservation, Omaha Tribe of Nebraska.  Submitted to Omaha Tribal Council, March 1993. 80p.

 

           

            Papers Presented at National or International Meetings or Conferences

Brahana, J.V, R.K. Davis, P.D. Hays and K.F. Steele, 2009, Flow Characterization From Epikarst and Shallow Bedrock Springs Across a Range of Hydrologic Conditions, Savoy Experimental Watershed, Ozark Region, U.S.  International Congress on Speleology, 15th International Congress, Kerrville, Texas, USA., p 1428.

Davis, R.K., F. Kitto and E. Saul, 2009, Development of Tribal Water Quality Standards In Conjunction With The Santee Sioux Nation Office of Environmental Protection.  Geological Society of America Annual Meeting Programs with Abstracts, 41.

Shepherd, S., J. Dixon, R.K. Davis, 2009, Gravel Distribution and Land Use In Two Headwater Streams of the Illinois RIiver Watershed, Arkansas. Geological Society of America Annual Meeting Programs with Abstracts, 41.

Shepherd, S., R.K. Davis, J. Dixon, and J. Cothren, 2008, Land Use Based Analysis of Fluvial Hydraulic Geometry Differences in the Illinois River Watershed, Ozark Plateaus Province, Benton and Washington Counties, AR.  Geological Society of America Annual Meeting Programs with Abstracts, 40(6):432.

Shepherd, S, J. Dixon, R.K. Davis, and J. Cothren, 2008, Are streams in the southwestern Ozarks underfit? Applying Dury’s model to the Illinois River Watershed in Arkansas.  American Geophysical Union Annual Meeting, December 2008 San Francisco, CA.

Sharif, M.U., Davis, R.K*., Steele, K. F., Hays, P.D., Kim, B., Kresse, T.M., and Fazio, J. A., 2007, Field-Scale application of surface complexation modeling using PHREEQC for predicting solid-phase arsenic occurrences in the sediments of the Mississippi River Valley alluvial aquifer, Arkansas, USA.  Geological Society of America Abstracts with Programs, Vol. 39, No. 6, p. 598.

Kim, B., K.F. Steele, R.K. Davis, M.U. Sharif, T. Kresse and F. Fazio, 2007, TI: Arsenic Release Mechanism in an Intensively Irrigated Agricultural Region of the Alluvial Aquifer, Eastern Arkansas, USA Eos Trans. American Geophysical Union, 88(52).

Winston, B, S. Hausmann, R.K. Davis, R. Morgan and W.R. Green, 2007, Taste and Odor in NW Arkansas Drinking Water.   Poster Presentation SSO9: Detection and Control of Cyanobacterial Blooms.  30th Congress of the International Association of Theoretical and Applied Mimnology.  August 12-18, 2007, Montreal, Quebec, Canada.

Shepherd, S., R.K. Davis, and I. Chaubey, 2006, Beaver Lake Watershed Atlas: A Community Resource for Protecting and Preserving the Watershed.  Geological Society of America Abstracts with Programs, v. 38, no. 7.

Johnson, T, R.K. Davis, D. Zachry, and J.V. Brahana, 2006, Detailed Geologic Map for Forum Quadrangle, Arkansas Including a Karst Inventory. Geological Society of America Abstracts with Programs, v. 38, no. 7.

Sharif, M, R.K. Davis, B. Kim, K. Steele, T. Kresse, and J. Fazio, 2006, Lithologic and Recharge Controls on the Spatial Variability of Arsenic in the Mississippi River Valley Alluvial Aquifer.  Geological Society of America Abstracts with Programs, v. 38, no. 7.

Kim, B, M. Sharif, T. Kresse, J. Fazio, J. Cothren, R.K. Davis, and K. Steele, 2006, Comparison of Potentiometric Maps Produced by Densely Designed Measurement Points, and USGS 7.5’ Manual Elevation Picks for the Alluvial Aquifer of Eastern Arkansas.  Geological Society of America Abstracts with Programs, v. 38, no. 7. (refereed)

Laincz, J., P.D. Hays, S. Ziegler, B. Winston, J.F. Murdoch, J.V. Brahana, K.F. Steele, I. Chaubey, and R.K. Davis, 2005, Characterization of Nutrient Processing at the Field and Basin Scale in the Mantled Karst of the Savoy Experimental Watershed, Arkansas.   U.S. Geological Survey Karst Interest Group Proceedings, Rapid City, South Dakota, September 12-15, 2005, editor E.L. Kuniansky.  U.S. Geological Survey, Scientific Investigations Report 2005-5160, p. 153.

Perkins, R., G. J. Thoma, and R. K. Davis, 2005, Basin Scale Modeling of Multiple Tracer Breakthrough in Fractured Limestone, 2005 Annual meeting of the American Institute of Chemical Engineers, Cincinnati, OH October 2005.

Davis, R.K., T. Ting, G. Thoma, J.V. Brahana, R. Perkins, and D. Androes, 2005, Application of Multiple Tracers to Elucidate Complex Transport Phenomena in a Karst Spring System.  Geological Society of America Abstracts with Programs, v. 37, no. 5.

Ting, T, R.K. Davis, J.V. Brahana, P.D. Hays, G. Thoma, 2005, Application of Multiple Tracers to Characterize Complex Sediment and Pathogen Transport in Karst.  U.S. Geological Survey Karst Interest Group Proceedings, Rapid City, South Dakota, September 12-15, 2005, editor E.L. Kuniansky.  U.S. Geological Survey, Scientific Investigations Report 2005-5160, p. 114.

Ting, T., G.J. Thoma, R.B. Beitle, R.K. Davis, J.V. Brahana, H Liu, 2004, High Cell Density Production of Europium-Labeled (Escherichia coli) for Tracing of Bacteria in Mantled Karst of Northwest Arkansas.  American Geophysical Union Annual Meeting, San Francisco, CA,  December 2004

Laubhan, A., R.K. Davis, and J.V. Brahana, 2004, Impact of Human Activities on Water Quality in the Mantled Karst of the Southern Ozarks, Northwest Arkansas.  Geological Society of America Abstracts with Programs, v. 36, n. 5.

Brahana, J.V., P. Hays, R.K. Davis, T. Kresse, T. Sauer, 2004, Case Studies From a Long-Term Karst Research Site Illustrating Data Requirements Necessary to Adequately Characterize and Represent Flow in Karst Aquifers at Meaningful Scales.  Geological Society of America Abstracts with Programs, v. 36, n. 5.

Davis, R.K., G.J. Thoma, J.V. Brahana, T. Ting, T. Unger, and D. Androes, 2004, Escherichia coli and Sediment Fate and Transport in a Mantled Karst Aquifer.  Geological Society of America Abstracts with Programs, v. 36, n. 5.

Unger T., R.K. Davis, J.V. Brahana, G.J. Thoma, and T. Ting, 2003, Structural Controls to Successfully Model Groundwater Flow Within the Mantled Karst of the Savoy Experimental Watershed, Northwest Arkansas.  Geological Society of America Abstracts with Programs, v. 35, no. 6, p. 281.

Brahana, J.V., R.K. Davis, T.J. Sauer, T.Ting, S. Al-Rashidy, K. Whitsett, and M. Al-Qinna, 2002, Recurring, Multicomponent Ground-Water Tracing Experiments at a Well-Characterized Basin in Mantled Karst – Lessons From the Savoy Experimental Watershed.  Geological Society of America, Abstracts with Programs, v. 34, n. 6, p. A-157.

Ting, Tiong-Ee, G.J. Thoma, R.K. Davis, and J.V. Brahana, 2002, Development of Europium-Labeled Escherichia Coli as a Bacterial Tracer for Water Quality Studies.  Geological Society of America, Abstracts with Programs, v. 34, n. 6, p. A-157.

Ting, Tiong-Ee., K. Whitsett, G.J. Thoma, R.K. Davis and J.V. Brahana, 2001, Sediment and Bacterial Tracing in Mantled Karst of Northwest Arkansas.  EOS, Transactions of the American Geophysical Union, v. 82, n. 47 abstract H41B-0290.

Whitsett, K.S., R.K. Davis, G.J. Thoma, T. Tiong-Ee, and J.V. Brahana, 2001, Sediment and Bacterial Tracing in Mantled Karst of Northwest Arkansas.  Abstracts with Programs Geological Society of America v. 33, n. 6.

Cooper, C, R.K. Davis, and K.F. Steele, 2001, Spatial Characterization of Hydrochemistry for the Alluvial and Sparta Aquifers of the Grand Prairie Region, Eastern Arkansas.  Geological Society of America, Abstracts with Programs. v. 33, n. 5, p. A16.

Davis, R.K. and P.E. Anderson, 2000, Arkansas' Source Water Assessment Program Delineations for Groundwater and Implications in Mantled Karst Aquifers.  Geological Society of America Abstracts with Programs, v. 32, n.3, p. A7.

McGinnis, S. and R.K. Davis, 2000, Environmental Equity and Domestic Well Water Quality Within the Omaha and Santee Sioux Reservations.  Geological Society of America, Abstracts with Programs. v. 32, n. 3, p. A35.

Anderson, P.E.W. and R.K. Davis, 2000, Improvements to Current Source Water Delineation Methods of Wells and Springs Using Examples From Northwest Arkansas Fractrured Karst Terrain.  Geological Society of America, Abstracts with Programs. v. 32, n. 7 p. A356.

Hamilton, S., R.K. Davis and P.F. Vendrell, 2000, Survival of Escherichia coli in a Mantled Karst Terrain.  Geological Society of America, Abstracts with Programs, v. 32, n. 3, p. A13.

Hamiltion, S.L. and R.K. Davis, 2000, Survival of Escherichia coli in Stream and Spring Environments of Northwest Arkansas.  Geological Society of America, Abstracts with Programs, v. 32, n. 7, p. A 432.

Brahana, J.V., R.K. Davis and D. Marshall, 2000, Integrating Empirical and Theoretical Considerations into a Viable Conceptual Model of Pathogen Transport and Storage in Shallow Karst Aquifers of the Southern Ozarks.  Geological Society of America, Abstracts with Programs. v. 32, n. 7., p A432.

White, P. and R.K. Davis, 1999, Substantiating the Need to Base Delineation of Source Water Assessment and Protection Areas on Hydrogeology in Mantled Karst Aquifers.  Association of Ground Water Scientists and Engineers, Technical Program.  National Groundwater Association Annual Meeting, December 3-6, 1999, Nashville, Tn.

McCollum-Roden, M.  and R.K. Davis, 1999, Water Quality of Rural Domestic Wells in the Mississippian Alluvial Aquifer of Eastern Arkansas.  Geological Society of America, Programs with Abstracts, v. 31, n. 7.

Davis, R.K., D.L. Iles and V.R. Schaefer, 1998, Fracture Mapping to Assess Potential for Contaminant Movement in Low-Permeability Clayey Till Near Sioux Falls, South Dakota.  Geological Society of America Abstracts with Programs, v. 30, n. 7, p. 173.

Peterson, E.W., R.K. Davis and H.A. Orndorff, 1998, Movement of Nitrate Through Regolith Covered Karst, Northwest Arkansas.  Geological Society of America Abstracts with Programs, v. 30, n. 7, p. 322.

Orndorff, H.A., R.K. Davis and J.V. Brahana, 1997, Comparison of Shallow Aquifer Flow Systems in Northwest Arkansas.  Geological Society of America, Abstracts with Programs, v. 29, no. 6, p.A328.

Peterson, E.W, R.K. Davis and J.V. Brahana, 1997, The Use of Regression Analysis in Predicting Nitrate-Nitrogen Concentrations in Springs of Northwest Arkansas.  Geological Society of America, Abstracts with Programs, v. 29, no. 6, p.A182.

Sinor, N.J., R.K. Davis and J.V. Brahana, 1997, Storm Event Analysis of Two Washington County Springs in Northwest Arkansas to Determine the Impacts to Groundwater Quality From Land Applied Animal Wastes,  Geological Society of America Abstracts with Programs, v. 29, no. 6, p.A329.

Sinor, N.J., R.K. Davis and J.V. Brahana, 1997, Dye Trace Analyses of Two Spring Watersheds in Washington County, Arkansas.  EOS, Transactions, American Geophysical Union. Fall 1997 San Francisco, CA.

Davis, R.K. and S. Avery, 1996, Establishment of Natural Resources Planning and Management Program and Training of Tribal Personnel Santee Sioux Tribe of Nebraska.  Geological Society of America. Abstracts with Programs, v. 26, no. 7, p. A413.

Monk, R.G., R.K. Davis and J.V. Brahana, 1996, Waste Management and its Effects on Decatur Spring, Northwest Arkansas.  Geological Society of America, Programs with Abstracts, v. 26, no. 7, p. A354.

Brahana, J.V., R.K. Davis, G.P. Stanton, E.H. Doherty, E.C. Bartholemy, 1996, A Conceptual Model for Preliminary Spring-Basin Delineation in the Mantled Karst Terrain of the Southern Ozarks.  Geological Society of America, Abstracts with Programs, v. 26, no. 7, p. A344.

Eckhoff, J.A., R.K. Davis, J.D. Carr, S. Avery, R. Bickerstaff, J. Campbell, S. Kitto, 1996, Land Use and Relationship to Stream Water Quality Within the Reservation of the Santee Sioux Tribe of Nebraska.  Geological Society of America, Abstracts with Programs, v. 26, no. 7, p. A348.

Davis, R.K., J.D. Carr, D. Dormedy, E. Peterson, M.X. Versch, M. Merrick and Q. Saunsoci, 1995, Identifying Sources of Surface Water and Ground Water Contamination Within the Reservation of the Omaha Tribe of Nebraska.  Geological Society of America, Abstracts with Programs, v. 27, no. 6, p. A42.

Sinor, N.J., R.K. Davis and K.F. Steele, 1995, Spring Monitoring to Assess Impacts From Land Application of Animal Wastes to Ground Water Quality in Northwest Arkansas.  Geological Society of America, Abstracts with Programs, v. 27, no. 6, p. A42.

Davis, R.K., D.L. Iles and V.R. Schaefer, 1993, Adequacy of Ground Water Monitoring Requirements for Facilities Constructed in Clayey Till.  Geological Society of America, Abstracts with Programs, v. 25, no. 6, p. A425.

Pederson, D.T., W.J. Wayne and R.K. Davis, 1992, Model for Sand Hills Development: Geometry, Sediment Supply and Deposition, River Systems and Climatic Implications.  Geological Society of America, Abstracts with Program, v. 24, no. 7, p. 296.

Davis, R.K., D.T. Pederson, D.A. Blum and J.D. Carr, 1991, Atrazine Movement Under Induced Recharge From the Platte River, Lincoln Municipal Wellfield, Ashland, Nebraska.  EOS, Transactions, American Geophysical Union. v. 72, no. 44, p. 185.

Davis, R.K., A.M. Ghazi, D.T. Pederson and R.J. Goble, 1991, Trace Element Variation Pattern Under Induced Recharge from the Platte River, Lincoln Municipal Wellfield, Ashland, Nebraska: As  Determined by ICP-MS.  Geological Society of America, Abstracts with Program, v. 23, no. 5, p. A268.

Davis, R.K. and D.T. Pederson, 1987, Pattern of Groundwater Level Decline in the Big Blue River Basin, Nebraska.  Geological Society of America, Abstracts with Programs v. 19 no. 7, p. 637.

 

            Papers Presented at Regional Meetings and Conferences

Davis, R.K. and P.E. Anderson, 2000, Arkansas' Source Water Assessment Program Delineations for Groundwater and Implications in Mantled Karst Aquifers.  Geological Society of America Abstracts with Programs, v. 32, n.3, p. A7.

Hamilton, Sherri, R.K. Davis and P.F. Vendrell, 2000, Survival of Escherichia coli in a Mantled Karst Terrain.  Geological Society of America Abstracts with Programs v. 32, n. 3, p. A13.

McGinnis, Shelley, R. and R.K. Davis, 2000, Evironmental Equity and Domestic Well Water Quality Within the Omaha and Santee Sioux Reservations.  Geological Society of America Abstracts with Programs, v. 32, n. 3, p. A35.

Orndorff, H.A., R.K. Davis and E.W. Peterson, 1999, Dual-System Flow Characterization for the Batesville Sandstone Formation and Underlying Boone Limestone Formation.  Geological Society of America, Abstracts with Programs, v. 31, n. 1, p. A-32.

Peterson, E.W., H.A. Orndorff, and R.K. Davis, 1998, 17 Beta-Estrodial: A Potential Tool in the Evaluation of Impacts of Animal Waste on Groundwater.   Geological Society of America Programs with Abstracts, v. 30, no. 3, p. 29.

Butler, M., V.R. Schaefer and R.K. Davis, 1997, Assessment of Hydraulic Behavior of Glacial Till at the Sioux Falls, South Dakota Landfill.  Midwest Groundwater Conference, Program with Abstracts, Coralville, Iowa, October 22-24.

Salisbury, D.O. and R.K. Davis, 1997, Hydrogeological and Hydrochemical Connection Between Crystal Lake and Decatur City Spring, Benton County, Arkansas.  Geological Society of America, Abstracts With Programs, v. 29, no. 2, p.A7.

Monk, R.G., R.K. Davis and J.V. Brahana, 1996, Fault Control of Ground-Water Flow to Decatur Spring, Northwest Arkansas.  Geological Society of America, Abstracts with Programs, v. 28, no. 1., p. A54.

Davis, R.K., D.L. Iles and V.R. Schaefer, 1995, Ground Water Movement in Fractured Clayey Till at the Runge Landfill, Sioux Falls, South Dakota.  Geological Society of America, Abstracts with Programs, v. 27, no. 3, p. A46.

Davis, R.K., D.T. Pederson, D.A. Blum and J.D. Carr, 1992, Hydrologic Controls on the Movement of Atrazine via Induced Recharge From the Platte River Into Lincoln's Municipal Well Field Near Ashland, Nebraska.  37th Annual Midwest Ground Water Conference. Sioux Falls, South Dakota, October, 1992, p. 29.

Davis, R.K. and D.T. Pederson, 1990, Modeled and Actual Patterns of Ground Water Level Decline in Nebraska.  Program with Abstracts, 35th Annual Midwest Ground Water Conference.  Lincoln, Nebraska. October, 1990.  p. 30.

                       

Papers Presented at State and Local Meetings and Conferences

Steele, K.F., K. Brye, V. Brahana and R.K. Davis, 2008, Preliminary Investigation of the Distribution of Trace Metals in Soil, Water and Poultry Litter in Northwest Arkansas.  Arkansas Water Resources Center 2009Annual Research and Watershed Conference.  April 14-15, Fayetteville, Arkansas.

Sharif, M.U., R.K. Davis, K.F. Steele, B. Kim, T.M. Kresse, J.A. Fazio, 2007, Distribution and variability of redox zones controlling spatial variability of arsenic in the Mississippi River Valley alluvial aquifer, southeastern Arkansas, Arkansas Water Resources Center Annual Conference., April 24-25, 2007 (oral presentation)[CD].

Johnson, T. and R.K. Davis, 2007, Delineation of point and nonpoint sources within the Kings River and Longs Creek watersheds, Northwest Arkansas.  Arkansas Water Resources Center Annual Conference., April 24-25, 2007 (poster presentation)[CD].

Laubhan, A.C., R.K. Davis, and J.V. Brahana, 2006, A Hydrogeologic and Water Quality Evaluation of the Springfield Aquifer in the Vicinity of North-Central Washington County, Arkansas.  2006 Annual Arkansas Water Resources Conference.  Fayetteville, Arkansas, April 18-19, 2006.

Johnson, T., and R.K. Davis, 2006, Delineation of Point and Non-point Sources within the Kings River and Longs Creek Watersheds, Northwest Arkansas.  2006 Annual Arkansas Water Resources Conference.  Fayetteville, Arkansas, April 18-19, 2006

Tiong-Ee, T., R.K. Davis, G.Thoma, J.V. Brahana, T. Unger, R. Perkins and D. Androes, 2005, Bacterial and Sediment Fate and Transport in Mantled Karst Aquifers, Savoy Experimental Watershed, Northwest Arkansas.  2005 Annual Arkansas Water Resources Conference.  Fayetteville, Arkansas, April 19 and 20, 2005.

Laubhan, A.C., R.K. Davis, and J.V. Brahana, 2005, Hydrogeologic Assessment of a Shallow Manlted Karst Aquifer, North-Central Washington and South-Central Benton Counties, Arkansas.  2005 Annual Arkansas Water Resources Conference.  Fayetteville, Arkansas, April 19 and 20, 2005.

Tiong-Ee, T., G.J. Thoma, R.B. Beitle, R.K. Davis, J.V. Brahana, L. Hui-Min, and R. Perkins, 2005, Production of Europium-Labeled Escherichia coli using High Cell Density Fermentation for Bacteria Tracking in Mantled Karst of Northwest Arkansas. 2005 Annual Arkansas Water Resources Conference.  Fayetteville, Arkansas, April 19 and 20, 2005.

Unger, T. R.K. Davis, J.V. Brahana, T. Ting, and G. Thoma, 2004, Modeling Groundwater Flow Within the Mantled Karst of the Savoy Experimental Watershed, Northwest Arkansas.  2004 Annual Arkansas Water Resources Conference: Diverse Research in Support of Quality Water Resources.  Fayetteville, Arkansas, April 20-21, 2004.

Cooper, C.D., R.K. Davis, and M. Smith, 2004, Confined Feeding Operation (CFO) Inventory and Assessment, Arkansas Portion of the Illinois River Watershed, Northwest Arkansas.  2004 Annual Arkansas Water Resources Conference: Diverse Research in Support of Quality Water Resources.  Fayetteville, Arkansas, April 20-21, 2004.

Steele, Kenneth F., T. Kresse, R. K. Davis and S. Boss, 2003, How Uniform is the Ground Water Chemistry of the Alluvial Aquifer, Arkansas Water Resources Center Annual Conference:  Quality Water to Meet Our Competing Needs, April 22-23, Fayetteville, AR.

Cooper, C.D., R.K. Davis and K.F. Steele, 2002, Water Resources and Hydrochemistry of the Alluvial and Sparta Aquifers of the Grand Prairie Region. Arkansas Water Resources Center Annual Conference.  April 2002, Fayetteville, Arkansas.

Wilson, A, C.D. Cooper, R.K. Davis and K.F. Steele, 2002, Hydrochemical Characterization for the Sparta Aquifer in South-Central Arkansas. Arkansas Water Resources Center Annual Conference.  April 2002, Fayetteville, Arkansas.

Davis, R.K., E.W. Peterson and H.A. Orndorff, 1999, 17-b Estradiol as an Indicator of Animal Waste Contamination in Mantled Karst Aquifers.  Arkansas Water Resources Conference, April 12-15, Fayetteville, Arkansas.

Davis, R.K., J.V. Brahana, H.A. Orndorff and E.W. Peterson, 1998, Bacteria and Nutrients in Shallow Aquifers of Northwest Arkansas. Arkansas Water Resources Center Annual Research Conference: Quality of Surface and Ground Water and Best Management Practices. Proceedings of the Arkansas Water Resources Center Annual Research Conference.  AWRC Publication no MISC 270, pp. 17-18.

Salisbury, D.O. and R.K. Davis, 1998, A Comparison of Water Testing Methods. Proceedings Journal of the Fifth Annual Undergraduate Research Conference, April 17 & 18, 1998, Henderson State University, Arkadelphia, Arkansas,   p. 119-121.

Salisbury, D.O. and R.K. Davis, 1998, A Comparison of Water Testing Methods: Quality Assurance/Quality Check Procedure.  Arkansas Academy of Science, Little Rock Arkansas.

Davis, R.K., J.V. Brahana, H.A. Orndorff and E.W. Peterson, 1998, Bacteria and Nutrients in Shallow Aquifers of Northwest Arkansas. Arkansas Water Resources Center Annual Research Conference: Water Quality of Surface and Ground Water and Best Management Practices.  April 8 and 9, Fayetteville, Arkansas.

Orndorff, H.A., R.K. Davis and J.V. Brahana, 1997, Comparison of Shallow Aquifer Flow Systems in Northwest Arkansas.  Benton and Washington County Water and Waste Water Association, December 6, Fayetteville, Hilton, Fayetteville, Arkansas.

Peterson. E.W., R.K. Davis and J.V. Brahana, 1997, The Use of Regression Analysis and Soil Coring in Monitoring Nitrate-Nitrogen Concentrations in Stafford Spring Area, Carroll County, Arkansas.  7th Biennial State Water Conference and AGWA/AWRA Symposium, November 6, p. 14

Peterson. E.W., R.K. Davis and J.V. Brahana, 1997, The Use of Regression Analysis and Soil Coring in Monitoring Nitrate-Nitrogen Concentrations in Stafford Spring Area, Carroll County, Arkansas.  Benton and Washington County Water and Waste Water Association, December 6, Fayetteville, Hilton, Fayetteville, Arkansas.

Salisbury, D.O. and R.K. Davis, 1997, Hydrogeological and Hydrochemical Connection Between Crystal Lake and Decatur City Spring Benton County, Arkansas.  Fourth Annual Arkansas Undergraduate Research Conference, Henderson State University, Arkadelphia, Arkansas, April 11-12.

Sinor, N.J., R.K. Davis, C. King and K.F. Steele, 1995, Monitoring Springs in Northwest Arkansas to Determine the Impact of Land Application of Animal Wastes on Groundwater Quality.  6th Biennial State Water Conference and 5th AWRA-AR and AGWA Joint Symposium.  C.A. Vines Arkansas 4-H Center, December 7, 1995.

Davis, R.K., D.T. Pederson, D.A. Blum and J.D. Carr, 1992, Hydrologic Controls on the Movement of Atrazine via Induced Recharge From the Platte River Into Lincoln's Municipal Well Field.  Proceedings of the Nebraska Academy of Sciences, April 10 and 11, 1992, Lincoln, Nebraska. v. 102, p. 66.

Davis, R.K. and D.T. Pederson, 1991, Effects of River Stage and Chemical Concentration Fluctuations in the Platte River on the Water Quality of the Lincoln Wellfield.  Program with Abstracts, Nebraska Academy of Science Annual Meeting, Lincoln, Nebraska.  April, 1991. v. 101, p. 50.

Davis, R.K., 1986, Management Policies to Control Groundwater Level Declines in Big Bend GMD #5.  Water and the Future of Kansas Conference, Kansas State University, Manhattan, Kansas, March 5, 1986.

 

Other Papers and Reports

Photo Credit in T.C. Winter, J.W. Harvey, O. Lehn and W.M. Alley, 1998, Ground Water and Surface Water A Single Resource. U.S. Geological Survey Circular 1139, p65.

Stanton, G.A., P.D. Hays, J.V. Brahana and R.K. Davis, 1997, Workbook: Field Hydrogeology--Theory, Techniques, and Applications.  Dept. of Geology, University of Arkansas, Fayetteville, Arkansas, 69p.

Stanton, G.A., P.D. Hays, J.V. Brahana and R.K. Davis, 1996, Workbook: Field Hydrogeology--Theory, Techniques, and Applications.  Dept. of Geology, University of Arkansas, Fayetteville, Arkansas, 69p.

Davis, R.K. and J. Eckhoff, 1996, Quality Assurance Project Plan: Santee Sioux Tribe of Nebraska Water Quality Management Program.  Santee Sioux Tribe of Nebraska, Open File Report.

Davis, R.K., K.F. Steele and N.J. Sinor, 1996, Quality Assurance Project Plan: Groundwater in Northwest Arkansas, Sampling for Improved/Maintained Quality Water and Demonstration Project for BMP Effectiveness. Arkansas Soil and Water Conservation Commission, Open File Report, 32p.

Stanton, G.A., P.D. Hays, J.V. Brahana and R.K. Davis, 1995, Workbook: Field Hydrogeology--Theory, Techniques, and Applications.  Dept. of Geology, University of Arkansas, Fayetteville, Arkansas, 56p.

Davis, R.K. and E.T. Marks, 1988, A Wellhead Protection Strategy for the City of Ellinwood, Kansas.  Prepared under a grant from the Kansas Department of Health and Environment.  Open File Report, Big Bend GMD #5, Stafford, Kansas

Revised Management Program, Big Bend Groundwater Management District #5, 1987,  Approved by the Chief Engineer, Division of Water Resources, Kansas State Board of Agriculture, January, 1987.  Open File Report, Big Bend GMD #5.

Funded Grants and Contracts Since 1990:

  • NSF REU SITE: Assessment and Sustainable Management of Ecosystem Services.  National Science Foundation, Research Experience For Undergraduates Program.  NSF $274,000.  3/1/08-8/31/11.  PI: M. Matlock; Co-PI’s: S. Boss, R.K. Davis, J. Popp, C. Sager, K. Smith.
  • Santee Sioux Nation, 106 Water Quality Management Program: Phase 3: Development of Tribal Water Quality Standards for the Santee Sioux Nation. Via U.S. EPA 106 Water Quality Management Program.  Santee Sioux Nation $49,934.  03/1/08-10/31/09.  PI: R.K. Davis.
  • Acquisition of Instrumentation for Identifying Nutrient Sources and Quantifying Taste and Odor Producing-Compounds in Drinking Water.  Arkansas Biosciences Institute, University of Arkansas.  $95,889.  7/1/08-6/30/09.  PI: S. Hausmann Co-PI’s: S. Boss, R.K. Davis, P. Hays, J. Lay, E. Pollock, T. Scott.
  • Arkansas Automated Reporting and Mapping System II (AARMS II).  Arkansas Natural Resources Commission.  ANRC $220,000.  8/1/07-5/31/09.  PI: F. Limp; Co-PI: R.K. Davis
  • Source of Geosmin and MIB in drinking water: Identifying the source and mechanisms of taste and odor compounds at Beaver Reservoir, northwest Arkansas.  USGS via USGS 104 B program, $24,000  3/1/07-2/28/08.  PI: S. Hausmann; Co-PI’s: S. Boss, R.K. Davis.
  • Arkansas Water Resources Center Arkansas, FY2008 Annual Application Under Section 104 of the Water Resources Research Act of 1984, as amended U.S. Geological Survey Announcement 01HQPA0010: Program Administration/Management Description.  U.S. Geological Survey. $22,000.  3/1/07-3/28/08.  PI: R.K. Davis; Co-PI: B. Haggard
  • Assessment of the Santee Sioux Tribal Water Quality Management Program in meeting the 10 Elements of a Water Monitoring and Assessment Program.  Santee Sioux Nation.  $48,843.  08/15/06-10/31/07.  PI: R.K. Davis
  • Preparation and Publication of Initial Beaver Lake Watershed Report, Beaver Water District.  $42,000. 07/01/06-05/31/07.  PI: R.K. Davis
  • Arkansas Water Resources Center Arkansas, FY2007 Annual Application Under Section 104 of the Water Resources Research Act of 1984, as amended U.S. Geological Survey Announcement 01HQPA0010: Program Administration/Management Description.  U.S. Geological Survey.  $21,889.   3/1/06 – 2/28/07.  PI: R.K. Davis
  • Beaver Lake Project: Literature Review on Lake and Water Quality Constituents: Walton Family Foundation, Inc., $85,000. 01/01/06-12/31/06.  PI: D. Brewer; Co-PI’s: R.K. Davis, K. Thornton.  My portion of this grant was $20,000
  • Arkansas' Automated Reporting and Mapping System (ARMS).  Arkansas Natural Resources Commission, $220,000.  10/01/05-06/30/07.  PI: F. Limp; Co-PI: R.K. Davis
  • 2006 LULC Mapping Project Arkansas.  Arkansas Natural Resources Commission, $62,187.  PI: J. Tullis; Co-PI’s: F. Limp, B. Gorham, R.K. Davis
  • Development of a Bacterial Source Tracking and Apportionment Methodology using DNA Micro Arrays and Luminex Micro Beads, and its Application in the Ozark Plateau.  $48,000, Arkansas Biosciences Institute. 07/01/05-05/15/06.  PI: G. Thoma; Co-PI’s: J. Woo and R.K. Davis
  • Watershed Investigative Support to the Beaver Water District, Arkansas, Beaver Water District $50,000. 10/01/05-09/30/06.  PI: R.K. Davis; Co-PI:  B. Haggard.
  • Compound Specific Stable Isotope Technology for Major Questions in Human and Environmental Health Sciences,  $108,000.  Arkansas Biosciences Institute.  08/01/04-05/31/05.  PI: S. Ziegler; Co-PI’s: R. Davis, G. Piercy, C. Coon, J. Lay, G. Thoma, D. Wolf
  • GIS Data Compilation and Map Preparation – Kings River and Longs Creek Watersheds, and Quality Assurance/Quality Control Water Quality Analysis in Support of Kings River Watershed Group.  Upper White River Basin Foundation, $51,484.  07/01/04-06/30/06.  PI: R.K. Davis; Co-PI: M. Nelson.
  • Arkansas Water Resources Center Arkansas, FY2006 Annual Application Under Section 104 of the Water Resources Research Act of 1984, as amended U.S. Geological Survey Announcement 01HQPA0010: Program Administration/Management Description.  U.S. Geological Survey.  $22,000.   3/1/05 – 2/28/06.  PI: R.K. Davis.
  • Digitization of Arkansas Soils.  Arkansas Soil and Water Conservation Commission.  09/01/03-02/29/04. $26,887.  PI: D. Wolf; Co-PI: R.K. Davis.
  • Digitization of Arkansas Soils-Phase II.  Arkansas Soil and Water Conservation Commission.  01/01/04-04/15/05.  $65,500.  PI: F. Limp; Co-PI’s: B. Gorham and R.K. Davis.
  • Land Use/Land Cover Mapping in Arkansas.  Arkansas Soil and Water Conservation Commission.  01/01/04-04/15/05.  $63,313.  PI: F. Limp; Co-PI’s: B. Gorham and R.K. Davis.
  • Development of a Comprehensive Wetland Monitoring and Assessment Program Within the Santee Sioux Nation for the Protection of Vulnerable Wetlands and Aquatic Resources.  Santee Sioux Nation, $32,815.  09/01/05-04/30/07.  PI: R.K. Davis.
  • Santee Sioux Nation, 106 Water Quality Management Program: Development of Tribal Water Quality Standards-Phase I.  Via U.S. EPA 106 Water Quality Management Program.  Santee Sioux Nation $48,184.  03/15/05-05/30/06.  PI: R.K. Davis.
  • Bacterial and Sediment Tracing in Mantled Karst Aquifers.  National Science Foundation – Hydrologic Sciences. $259,000.  08/01/02-07/31/05. PI: R.K. Davis; Co-PI: G. Thoma.
  • Research Experience for Undergraduates Supplement. National Science Foundation-Hydrologic Sciences. $15,000.  01/01/03-07/31/05.  PI: R.K. Davis; Co-PI: G. Thoma.
  • Water Resources in the Mantled Karst in the Vicinity of Tontitown, Arkansas.  Arkansas Department of Environmental Quality, $75,000.  07/01/04-06/30/06.  PI: R.K. Davis; Co-PI: J.V. Brahana
  • Arkansas Water Resources Center Arkansas, FY2005 Annual Application Under Section 104 of the Water Resources Research Act of 1984, as amended U.S. Geological Survey Announcement 01HQPA0010: Program Administration/Management Description.  U.S. Geological Survey.  $22,000.   3/1/04 – 2/28/05.  PI: R.K. Davis.
  • Arkansas Water Resources Center Arkansas, FY2004 Annual Application Under Section 104 of the Water Resources Research Act of 1984, as amended U.S. Geological Survey Announcement 01HQPA0010: Program Administration/Management Description.  U.S. Geological Survey.  $21,895.   3/1/03 – 2/28/04.  PI: R.K. Davis.
  • Santee Sioux Tribe of Nebraska: Development of a Pesticide Management Plan for the Santee Sioux Nation.  Santee Sioux Tribe via U.S. EPA Pesticide Program. $14,311.  01/01/02-12/31/02.  PI: R.K. Davis
  • Santee Sioux Tribe of Nebraska: Assessment of Comprehensive Tribal Wetlands Program -–Core Essential Elements of a Wetlands Program.  Santee Sioux Tribe of Nebraska via U.S. EPA Wetlands Program.  $19,027. 01/01/02-9/30/02.  PI: R.K. Davis.
  • Development of a Conceptual Model of Reservoirs and Associated Data Needs for Beaver Lake Watershed.  Arkansas Soil and Water Conservation Commission. $7,782.  01/01/02-05/31/02.  PI: R.K. Davis
  • Arkansas Water Resources Center Arkansas, FY2003 Annual Application under section 104 of the Water Resources Research Act of 1984, as amended U.S. Geological Survey Announcement 01HQPA0010: Program Administration/Management Description.  U.S. Geological Survey.  $21,948.   3/1/02 – 2/28/03.  PI: R.K. Davis.
  • Assessment of Surface Water – Ground Water Interactions within the Alluvial and Shallow Unconfined Aquifers within the Santee Sioux Nation.  Santee Sioux Tribe of Nebraska via U.S. EPA 106 Water Quality Management Program.  $50,865.  04/01/00-03/31/02.  PI: R.K. Davis.
  • Santee Sioux Tribe of Nebraska: Development of a Source Water Protection Program and Plan within the Reservation of the Santee Sioux Tribe of Nebraska.  Santee Sioux Tribe via U.S. EPA Office of Environmental Justice.  Environmental Justice Through Pollution Prevention.  $49,718. 08/01/99-08/31/01.  $49,718.  PI: R.K. Davis.
  • Environmental Characterization of Arkansas:  Soil and Land Use/Land Cover Maps and Saline Water.  Arkansas Soil and Water Conservation Commission.  $682,400.  07/01/99-06/30/01.  PI: H.D. Scott; Co-PI’s: W.F. Limp, R.K. Davis and K.F. Steele.  My portion of this grant was $85,040.
  • Saline Water Investigations in Eastern Arkansas:  Geochemical Tools to Characterize Sources of Saline Water.  Arkansas Water Resources Center, USGS 104 program. $24,708.  03/01/00-02/28/01. PI: R.K. Davis.
  • Assessment of Public Drinking Water Supplies in Arkansas:  U.S. Department of Interior, U.S. Geological Survey, Water Resources Division. $276,642. 03/01/98-09/30/01.  PI: F. Limp; Co-PI: R.K. Davis. My portion of this grant was $79,212.
  • Investigation of Borehole Completion Methods to Optimize the Environmental Benefits of Ground-Coupled Heat Pumps.  ASHREA, Inc. $82,916. 03/01/99-12/31/00.  PI: D.W. Nutter; Co-PI’s: R.J. Couvillion and R.K. Davis.  My portion of this grant was $22,000.
  • Bacterial Tracing in Karst Terrain.  Arkansas Science and Technology Authority.  $56,902. 11/01/99-01/31/02.  PI: R.K. Davis; Co-PI: G. Thoma.
  • Survival of Escherichia coli in the Sediments of a Northwest Arkansas Stream and Spring.  USGS 104b program. $22,141. 03/01/99-02/29/00.  PI: R.K. Davis: Co-PI: M. Nelson.
  • Santee Sioux Tribe of Nebraska: Continuation of Water Quality Planning and Management Program.  Santee Sioux Tribe via U.S. EPA 106 Water Quality Management Program.  $17,500.  05/01/98-12/31/99.  PI: R.K. Davis.
  • Santee Sioux Tribe of Nebraska: Establishment of Riparian Zone Demonstration Sites and Creation of an Interagency Advisory Team for the Missouri River Bottomlands.  Santee Sioux Tribe via U.S. EPA Wetlands Program.  $17,500.  02/01/98-06/30/99.  PI: R.K. Davis.
  • Spring Water Sampling in Northwest Arkansas to Assess BMP Effectiveness: Continuation 2.  Arkansas Soil and Water Conservation Commission.  $13,009.  06/01/98-06/30/99.  PI: R.K. Davis; Co-PI: K.F. Steele.
  • Santee Sioux Tribe of Nebraska Water Quality Management Program.  Santee Sioux Tribe via U.S. EPA 106 Water Quality Management Program.  $8,000.  05/01/97-12/31/98. PI: R.K. Davis.
  • Remotely Sensed Data in Support of Non-Point Source Contamination. Arkansas Space Grant Consortium.  $1,305.  01/01/97-12/31/97.  PI: R.K. Davis.
  • Continuation of Spring Water Sampling in Northwest Arkansas to Assess BMP Effectiveness. Arkansas Soil and Water Conservation Commission.  $35,134.  01/01/97-12/31/98.  PI: R.K. Davis; Co-PI: K.F. Steele.
  • A Comparison of Water Collection Methods, SILO Undergraduate Research Fellowship.  $2,207.  12/01/96-10/31/97.  Mentor for Demetra O. Salisbury, Undergraduate Geology Major.
  • Minimizing Impacts of Animal Waste on Shallow Karst Aquifers. Arkansas Soil and Water Conservation Commission.  $50,000.  01/01/96-09/31/97.  PI: R.K. Davis; Co-PI: K.F. Steele.
  • Assessing the Effects of a Small Community Using On-Site Water Water Treatment Systems on Ground and Surface Water Quality.  USGS 104b Program.  $19,051.  09/01/96-09/31/97.  PI: T.W. Nichols; Co-PI’s: R.K. Davis, M. Nelson, and P.F. Vendrell.
  • Santee Sioux Tribe of Nebraska, Water Quality Management and Wetlands Conservation.  Santee Sioux Tribe via U.S. EPA Wetlands and 106 Water Quality Management Programs.  $22,000.  01/01/96-02/28/97.  PI: R.K. Davis.
  • Groundwater in Northwest Arkansas: Sampling for Improved/Maintained Quality Water and Demonstration of BMP Effectiveness.  Arkansas Soil and Water Conservation Commission.  $110,099.  01/01/95-09/30/97.  PI: R.K. Davis; Co-PI: K.F. Steele.
  • Reconnaissance of Groundwater Quality in Northwest Arkansas. Arkansas Soil and Water Conservation Commission.  $66,645.  10/01/94-06/30/96.  PI: R.K. Davis; Co-PI: K.F. Steele.
  • Water Quality of Rural Domestic Wells in Selected Aquifers in Arkansas.  USGS 104b Program.  $19,852.  07/01/95-09/30/96.  PI: R.K. Davis.
  • Adequacy of Groundwater Monitoring Facilities Constructed in Glacial Till Near Sioux Falls, South Dakota.  USGS 104b Program.  $14,000. 06/01/94-05/31/96.  PI: V.R. Schaefer; Co-PI’s R.K. Davis and R.A. Kohl.
  • Omaha Tribe of Nebraska Water Quality Management Program.  Omaha Tribe of Nebraska via U.S. EPA 106 Water Quality Management Program.  $10,000.  05/04/94-09/30/95.  PI: R.K. Davis.
  • Santee Sioux Tribe of Nebraska Wetlands Conservation Planning.  Santee Sioux Tribe via U.S. EPA Wetlands Program.  $10,000.  05/01/94-10/31/96.  PI: R.K. Davis.
  • Hydrogeologic Field Methods Equipment Grant.  National Science Foundation Instrumentation and Laboratory Improvement Program.  $5,137.  08/01/93-07/31/94.
  • Adequacy of Groundwater Monitoring Systems Constructed in Clay Till. South Dakota Groundwater Research and Public Education Program.  $79,816.  03/01/93-05/31/97.  PI: R.K. Davis; Co-PI’s; D.L. Iles and V.R. Schaefer.
  • Omaha Tribe of Nebraska Investigation and Compilation of Water Resources Information for the Omaha Indian Reservation.  Omaha Tribe of Nebraska via U.S. Bureau of Indian Affairs.  $8,755.  Completed Spring 1993. PI: R.K. Davis; Co-PI: D.T. Pederson.
  • Investigation of Contaminant Migration From the Platte River into the Lincoln, Municipal Wellfield.  City of Lincoln Nebraska.  $43,700. Completed Spring 1992.  PI: D.T. Pederson; Co-PI: R.K. Davis.