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Abstract
Which agricultural non-point source water quality model is the best option to meet your needs? What new models are available that I may not be aware of? What modifications and new versions are available for my favorite model? Are new user interfaces, general databases, or other time saving devices available for a model that will help me meet the need for my application?
Consistent and comprehensive model evaluations are a continuing need considering the wide variety of potential applications and the number of models in existence. New applications create additional concern because no model is designed to meet all the needs of students, researchers, extension agents, regulatory agencies, planning organizations, consultants, and environmental groups. If models are to see truly practical and wide-spread application, the following are essential: (1) what is the original purpose of the model?, (2) under what conditions will it perform correctly?, (3) what accuracy can be expected under the best conditions?, and (4) what are the limitations? The primary purpose for this effort is to consolidate information for a potential user to choose the best model for their application.
Potential Impact: In 1989 Southern Cooperative Series Bulletin no. 338 was developed as a final report from Southern Regional Project S-164, Application of Water Quality Models for Agricultural and Forested Watersheds. This report contained a limited evaluation of five widely used models at that time. This report has been used extensively in the classroom and by cooperating agencies as a reference for those models. These models are now even better, and other models are available. The potential for providing up-to-date model evaluation resources for students, teachers, and other users is essential to meeting the needs of our clientele.
This document includes an overall description of model evaluation efforts, the model evaluation criteria used for each model in this document, a matrix describing many of the different models and their general characteristics, individual/extensive model evaluations for at least 14 widely used models, and at least three unique model evaluation/use papers. All papers have been peer-reviewed by the committee. This document will also be maintained in a web-accessible format (http://s1004.okstate.edu/S1004/Regional-Bulletins/). This project is a combination activity of Regional Project S-273, Development and Application of Comprehensive Agricultural Ecosystem Models; ASCE, Environmental and Water Resources Institute, Task Committee on Non-Point Source Water Quality Models: Their Use and Application; and the Hydrology Group, SW-21, from within ASAE.
This document is available in html format (http://s1004.okstate.edu/S1004/Regional-Bulletins/Modeling-Bulletin/) and Portable Document Format (pdf) (http://s1004.okstate.edu/S1004/Regional-Bulletins/Modeling-Bulletin/modeling-bulletin.pdf).
This bulletin from Regional Project S273 is being electronically published with the approval of the Directors of the Southern Agricultural Experiment Stations. Under the procedure of cooperative publications, it becomes in effect, a separate publication for each of the cooperating stations listed. The cooperating agencies are:
The ASCE, Environmental and Water Resources Institute, Irrigation and Drainage Council Task Committee on "Non-point Source Water Quality Models: Their Use and Application" was a direct partner in this development. The task committee, through ASCE and EWRI supported the travel and publication costs associated with this effort.
The task committee included all the individuals indicated as authors and co-authors within the report. The leadership on this task committee included:
Chair: Dr. Daniel Thomas, Professor and Head, Biological and Agricultural Engineering Dept., Louisiana State Univ. and LSU AgCenter, Baton Rouge, LA 70803.
Vice Chair: Dr. George Sabbagh, Adjunct Professor, Texas A&M University, Biological and Agricultural Engineering Dept. & Scientist, Monsanto Corporation, Kansas City, MO.
Secretary: Dr. W. Cully Hession, Assistant Professor, University of Vermont, Civil and Environmental Engineering Department, Burlington, VT.
Reports of all Southern Region Agricultural Experiment Stations serve people of all ages, socio-economic levels, race, color, sex, religion, national origin, and the handicapped.
Dan Storm - dstorm@okstate.edu
Introduction and Scope
Daniel L. Thomas, Robert O. Evans, Adel Shirmohammadi, Bernard A. Engel 1
Summary of Model Characteristics
D. L. Thomas, B. A. Engel, M. C. Hirschi, D. R. Edwards, A. Kenimer, D. D. Bosch 8
Model Summary Tables
Evaluation Criteria for Water Quality Models
John E. Parsons, George J. Sabbagh, Conrad D. Heatwole and Robert O. Evans 23
ANSWERS-2000
Theo A. Dillaha, Mary Leigh Wolfe, Adel Shirmohammadi, F. Wes Byne 28
Evaluation of the AnnAGNPS Water Quality Model ,
D. Bosch, F. Theurer, R. Bingner, G. Felton, and I. Chaubey 45
Evaluation of DRAINMOD
John E. Parsons, George J. Sabbagh, Robert O. Evans and Andrew D. Ward 55
Evaluation of the Water Quality Model EUTROMOD
W. Cully Hession, Maeve McBride, John E. Parsons, Kenneth H. Reckhow 63
GLEAMS MODEL
A. Shirmohammadi, W.G. Knisel, L.F. Bergström, R. Bengtson, A. Ward, M. Reyes, H. Manguerra, K. King 69
Evaluation of the MIKE SHE Modeling System
Jason Yan, Joyce Zhang 83
OPUS: MODEL DESCRIPTION AND EVALUATION
Conrad D. Heatwole, Sebastian Zacharias, and Stephen R. Workman 92
Evaluation of QUAL2E
François Birgand 99
Evaluation of the RUSLE Soil Erosion Model
D.C. Yoder, G.R. Foster, G.A. Weesies, K.G. Renard, D.K. McCool, and J.B. Lown 107
Evaluation of the Root Zone Water Quality Model (RZWQM): A Review
R. W. Malone, L. Ma, L. R. Ahuja, and K. W. Rojas 117
Evaluation of TOPMODEL
Pilar Montesinos-Barrios and Keith Beven 149
Evaluation of the WAVE model
Muñoz-Carpena, R. M. Vanclooster and E. Villacé-Reyes 156
Appendix: Application Papers
ARCVIEW-GLEAMS INTEGRATION FOR PESTICIDE SOURCE LOADING ESTIMATION
H. B. Manguerra, W. Tate, and M. Lahlou 169
Application of the SCS Curve Number Method to Mildly-Sloped Watersheds
S. E. Walker, K. Banasik, W. J. Northcott, N. Jiang, Y. Yuan, J. K. Mitchell 184
1The editors are John E. Parsons, Professor of Biological and Agricultural Engineering, North Carolina State Univ., Raleigh, NC, 27695-7625; Daniel L. Thomas, Professor and Head, Biological and Agricultural Engineering Dept., Louisiana State Univ. and LSU AgCenter, Baton Rouge, LA 70803; Rodney L. Huffman, Associate Professor of Biological and Agricultural Engineering, North Carolina State Univ., Raleigh, NC, 27695-7625.
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Prepared by Dan Storm Oklahoma State University dstorm@okstate.edu |
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