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Will the data from the Iowa State University studies of vegetative treatment systems (VTS) be used to verify the SPAW model for feedlot runoff and VTS systems?
Last Updated: January 20, 2008
First, the SPAW model was never designed to be used to assess the hydrology of a vegetative treatment system (VTS). Components of SPAW are useful for assessing components of a vegetative treatment area (VTA), but it is not a design tool. At Iowa State University, we have a graduate student analyzing results from SPAW versus results of the ISU-developed Effluent Limitation Guideline and VTA models for use with vegetative treatment systems. Two papers covering this topic will be available through ASABE following the international meeting in June 2008.
SPAW is a daily hydrologic budget model for agricultural fields and ponds. Additional Information on SPAW
Author: Lara Moody, Iowa State University
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