CARD: Center for Agricultural and Rural Development

Ag Policy
Research Areas

Home Ag Policy Research Areas Resource and Environmental Policy

Objective: To measure the effects of agricultural activities on water quality and to determine which policies are most effective in protecting watersheds and sources of drinking water, particularly in the Midwest.

• Completed Projects
• Current Projects
• Research Publications
• Articles & Briefs
• Presentations

Optimal Placement of Conservation Practices Using Genetic Algorithm with SWAT
Manoj Jha, Sergey Rabotyagov, Philip W. Gassman
[09-WP 496]

Hydrologic Simulations of the Maquoketa River Watershed Using SWAT
Manoj Jha
[09-WP 492]

Agricultural Policy Environmental EXtender (APEX) Model: An Emerging Tool for Landscape and Watershed Environmental Analyses, The
Philip W. Gassman, Jimmy R. Williams, Xiuying Wang, Ali Saleh, Edward Osei, Larry M. Hauck, R. César Izaurralde, Joan D. Flowers
[09-TR 49]

Sny Magill Watershed Modeling Project: Final Report
Ali Saleh, Philip W. Gassman, Catherine L. Kling
[01-SR 95] (Revised)

Comparison of Land Use Area Estimates from Three Different Data Sources for the Upper Mississippi River Basin
Chinnasamy Santhi, Philip W. Gassman, Silvia Secchi, Raghavan Srinivasan
[08-TR 48]

Soil and Water Assessment Tool: Historical Development, Applications, and Future Research Directions, The
Philip W. Gassman, Manuel R. Reyes, Colleen H. Green, Jeffrey G. Arnold
[07-WP 443]

Water Quality Modeling for the Raccoon River Watershed Using SWAT
Manoj Jha, Jeffrey G. Arnold, Philip W. Gassman
[06-WP 428]

Historical Development and Applications of the EPIC and APEX Models
Philip W. Gassman, Jimmy R. Williams, Verel W. Benson, R. César Izaurralde, Larry M. Hauck, C. Allan Jones, Jay D. Atwood, James Kiniry, Joan D. Flowers
[05-WP 397]

Calibration and Validation of SWAT for the Upper Maquoketa River Watershed
Pipat Reungsang, Ramesh Kanwar, Manoj Jha, Philip W. Gassman, Khalil Ahmad, Ali Saleh
[05-WP 396]

Designation of Co-benefits and Its Implication for Policy: Water Quality versus Carbon Sequestration in Agricultural Soils, The
Silvia Secchi, Manoj Jha, Lyubov A. Kurkalova, Hongli Feng, Philip W. Gassman, Catherine L. Kling
[05-WP 389]

Carbon Sequestration, Co-Benefits, and Conservation Programs
Hongli Feng, Catherine L. Kling, Philip W. Gassman
[04-WP 379]

Recreation Demand Using Physical Measures of Water Quality
Kevin J. Egan, Joseph A. Herriges, Catherine L. Kling, John A. Downing
[04-WP 372]

Climate Change Sensitivity Assessment on Upper Mississippi River Basin Streamflows Using SWAT
Manoj Jha, Jeffrey G. Arnold, Philip W. Gassman, Roy Gu
[04-WP 353]

Impacts of Climate Change on Stream Flow in the Upper Mississippi River Basin: A Regional Climate Model Perspective, The
Manoj Jha, Zaitao Pan, Eugene S. Takle, Roy Gu
[03-WP 337]

Assessing the Costs and Environmental Consequences of Agricultural Land Use Changes: A Site-Specific, Policy-Scale Modeling Approach.
JunJie Wu, Richard M. Adams, Catherine L. Kling, Katsuya Tanaka
[03-WP 330]

Dynamic Formation of Willingness to Pay: An Empirical Specification and Test , The
Jay Corrigan, Catherine L. Kling, Jinhua Zhao
[03-WP 327]

Multiple Benefits of Carbon-Friendly Agricultural Practices: Empirical Assessment of Conservation Tillage
Lyubov A. Kurkalova, Catherine L. Kling, Jinhua Zhao
[03-WP 326]

Effect of Watershed Subdivision on SWAT Flow, Sediment, and Nutrient Predictions
Manoj Jha, Philip W. Gassman, Silvia Secchi, Roy Gu, Jeffrey G. Arnold
[02-WP 315] (Revised)

Effect of Future Availability of Information on Willingness to Pay, The
Jay Corrigan
[01-WP 290]

Conservation Payments: Challenges in Design and Implementation
Bruce A. Babcock, John C. Beghin, Michael D. Duffy, Hongli Feng, Brent Hueth, Catherine L. Kling, Lyubov A. Kurkalova, Uwe A. Schneider, Silvia Secchi, Quinn Weninger, Jinhua Zhao
[01-BP 34]

Valuing Preservation and Improvements of Water Quality in Clear Lake
Christopher D. Azevedo, Joseph A. Herriges, Catherine L. Kling
[01-SR 94]

Resource and Agricultural Policy System (RAPS): Upgrade and Documentation, The
JunJie Wu
[00-TR 45]

Location of Production and Endogenous Water Quality Regulation: A Look at the U.S. Hog Industry
Mark R. Metcalfe
[99-WP 219]

Validation of EPIC for Two Watersheds in Southwest Iowa
S. W. Chung, Philip W. Gassman, L. A. Kramer, Jimmy R. Williams, Roy Gu
[99-WP 215]

Estimating Atrazine Leaching in the Midwest
Michael R. Burkart, Philip W. Gassman, Thomas B. Moorman, Piyush Singh
[98-WP 201]

Sampling Schemes for Policy Analyses Using Computer Simulation Experiments
Alicia L. Carriquiry, F. Jay Breidt, P. G. Lakshminarayan
[97-WP 184]

National Pilot Program Integrated Modeling System: Environmental Baseline Assumptions and Results for the APEX Model. Livestock Series Report 9, The
Philip W. Gassman
[97-SR 85]

Water Quality in Lake Miedwie 1992-1994: An Analysis of Basic Monitoring
Elzbeita Wierzchowska
[97-BB 8]

Effects of Agriculture on Water Quality: A Polish Perspective, The
Andrzej Sapek
[97-BB 6]

Environmental Component of the National Pilot Project Integrated Modeling System. Livestock Series Report 8, The
Philip W. Gassman, Larry M. Hauck
[96-SR 84]

Waterfowl Populations and the Conservation Reserve Program in the Prairie Pothole Region of North and South Dakota
Terrance M. Hurley, Bruce A. Babcock, Ronald E. Reynolds, Charles R. Loesch
[96-WP 165]

Tradeoffs in Balancing Multiple Objectives of An Integrated Agricultural Economic and Environmental System
P. G. Lakshminarayan
[96-M 8]

Spatio-Temporal Statistical Modeling of Livestock Waste in Streams. Livestock Series Report 5
Noel Cressie, James J. Majure
[96-SR 81]

Water Quality Protection in Polish Agriculture
Andrzej Sapek, Barbara Sapek, Walter E. Foster
[96-BB 5]

Effect of Agriculture Nitrogen on Water Quality in Lithuanian Rivers, The
Antanas Sigitas Sileika
[96-BB 4]

Impacts of Agricultural Practices and Policies on Potential Nitrate Water Pollution in the Midwest and Northern Plains of the United States
JunJie Wu, Bruce A. Babcock, P. G. Lakshminarayan
[96-WP 148]

Agricultural Policies and Soil Degradation in Western Canada: An Agro-Ecological Economic Assessment. Report 3. The Integration of the Environmental and Economic Components.
Aziz Bouzaher, Jason F. Shogren, Derald Holtkamp, Philip W. Gassman, David Archer, P. G. Lakshminarayan, Alicia L. Carriquiry, Randall Reese, William H. Furtan, R. César Izaurralde, James Kiniry
[95-SR 75]

CEEPES Evaluation of Sustainable Agricultural Policies for Iowa's MSEA Site, Walnut Creek, A
P. G. Lakshminarayan, Aziz Bouzaher, Stanley R. Johnson
[94-WP 126]

Corn and Sorghum Herbicides and Water Quality: An Evaluation of Alternative Policy Options, CEEPES Project Research Memo 7
P. G. Lakshminarayan, Aziz Bouzaher, Toshitsugu Otake, Todd Campbell, Philip W. Gassman
[94-SR 70]

Atrazine and Water Quality: An Evaluation of Restricting Atrazine Use on Corn and Sorghum to Postemergent Applications, CEEPES Atrazine Project Research Memo 6
Aziz Bouzaher, Derald Holtkamp, P. G. Lakshminarayan, Philip W. Gassman, Randall Reese, Todd Campbell
[93-SR 68]

Conceptual Framework for the National Pilot Project on Livestock and the Environment, Livestock Series Report 2
Aziz Bouzaher, Stanley R. Johnson, Shannon Neibergs, Ron Jones, Larry Beran, Larry Frarey, Larry M. Hauck
[93-SR 67]

Joint U.S. Agricultural Run-Off Program: Poland Agriculture and Water Quality Protection Project
Stanley R. Johnson, Aziz Bouzaher, Walter E. Foster, Susan C. Gordon
[93-SR 62]

Atrazine and Water Quality: An Updated CEEPES Analysis, CEEPES Atrazine Project Research Memo 5
Aziz Bouzaher, Richard Cabe, Jason F. Shogren, Alicia L. Carriquiry, Derald Holtkamp, Philip W. Gassman, David Archer, P. G. Lakshminarayan, Todd Campbell, Qingbin Wang, Andrew Manale, Robert Taylor
[92-SR 59]

Metamodels and Nonpoint Pollution Policy in Agriculture
Aziz Bouzaher, Richard Cabe, Alicia L. Carriquiry, Philip W. Gassman, P. G. Lakshminarayan, Jason F. Shogren
[92-WP 97]

Pesticide Fate Research Trends within a Strict Regulatory Environment: The Case of Germany
Philip W. Gassman
[92-WP 89]

Integrating Economic and Environmental Process Models: An Application of CEEPES to Atrazine
Richard Cabe, Peter J. Kuch, Jason F. Shogren
[91-SR 54]

1989 Recommended Pesticide and Nitrogen Use Survey: Description and Policy Applications, The
Leland Thompson, Jay D. Atwood, P. G. Lakshminarayan, Jason F. Shogren, Stanley R. Johnson
[91-TR 19]

Compromise Solution for Economic-Environmental Decisions in Agriculture
P. G. Lakshminarayan, Jay D. Atwood, Stanley R. Johnson, Vince A. Sposito
[91-WP 72]

Valuing Potential Groundwater Protection Benefits
Thomas D. Crocker, Bruce A. Forster, Jason F. Shogren
[91-WP 71]

Impact of Agriculture on Water Quality: A Survey of Five States' Data Bases and Information Systems, The
Thomas HarringtonJr., Derald Holtkamp, Stanley R. Johnson
[90-SR 45]

Analysis of 1990 Farm Bill Conservation Options
Jay D. Atwood, Stanley R. Johnson, Jason F. Shogren, Leland Thompson
[90-SR 43]

Natural Resource Accounting Systems and Environmental Policy Modeling
Richard Cabe, Stanley R. Johnson
[90-WP 65]

Comparative Analysis of State Regulations for Use of Agricultural Chemicals, A
Sherry Wise, Stanley R. Johnson
[90-WP 50]

Potential for "LISA"-Type Nitrogen Use Adjustments in Mainstream U.S. Agriculture, The
Jay D. Atwood, Stanley R. Johnson
[90-WP 49]

National and Regional Implications of Targeting the Conservation Reserve
Klaus Frohberg, Doug Haney, Matthew T. Holt, Derald Holtkamp, Stanley R. Johnson, William H. Meyers, Leland Thompson, Greg Traxler, Patrick C. Westhoff
[89-SR 39]

Irrigation Production Functions Reflecting Weather Conditions
Burton C. English
[84-WP 8]

CARD/RCA Water Sector Model, The
Elwin G. Smith, LeRoy T. Hansen, Burton C. English, Sherry Wise
[84-WP 1]

Water Sector for the CARD/RCA 85 Model, The
Burton C. English, Elwin G. Smith, LeRoy T. Hansen, Sherry Wise
[83-WP 6]

Implications of Soil Loss Control Policies upon the Long-run Sustainability of Agricultural Production within the State of Iowa
James A. Langley, Earl O. Heady, Burton C. English
[83-WP 1]

Water: Its Changing Role in U.S. Agriculture
Burton C. English
[82-WP 15]

Optimal Groundwater Mining in the Ogallala Aquifer: Estimation of Economic Losses and Excessive Depletion Due to Commonality
Kun C. Lee, Cameron Short, Earl O. Heady
[81-WP 1]