ABE 6254

Simulation of Agricultural Watershed Systems

Outline for Critique of Models


This paper is to be done individually, not in your model team groups.  Your model critique paper should include, but not necessarily be limited to, the following information.

I.  Model comparisons
Compare and discuss the models presented in class (FHANTM, Opus, EAAMOD, ACRU2000, WAM, SWAT2000) with respect to the following characteristics and processes:  time scale, spatial approach, areal scope, intended uses, infiltration, runoff, evapotranspiration, subsurface flow, erosion, nutrients, pesticides, and other aspects of your choice.
--How would you describe the different approaches to simulation of the hydrology with these models?
--List a variety of potential best management practices (BMPs) for control of sediment and nutrients.  How, and to what extent, can the effects of these BMPs be accounted for in the different models?
II.  Runoff relationships
In terms of runoff volumes and the timing of runoff from a continuous model, discuss the physical limitations of each model used in class.
--Which model(s) would be most appropriate for use in a moderate to highly sloped field that has silty clay soils?  Why?  What are the potential concerns in such an area?  How well does each model address them?
--Which model(s) would be most appropriate for use in a low sloped field that has sandy, high-water-table soils?  Why?  What are the potential concerns in such an area?  How well does each model address them?
--What if anything, in your opinion, should be added to these models (and is not currently in any of them) to make continuous simulation more physically realistic? If nothing why not, and if so, what effect do you think this would have?
III.  Model applicability
Rank the models used in class in order of their applicability to a broad range of field situations (according to the model’s generality).  Justify your answer by listing some reasons why some models are more broadly applicable than others.


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 Last updated 11/2/05 by Ken Campbell