Design of Vegetative Filter Strip Using Web-Based System with Groundwater Table and Pesticide Degradation Analysis Modules
Publication: Journal of Hydrologic Engineering
Volume 23, Issue 2
Abstract
Vegetative filter strips (VFS) are an effective approach to reducing edge-of-field discharge of sediment and pesticide. The web-based Vegetative Filter Strip MODel (VFSMOD) system, developed to assess the trapping efficiency of VFS, has a limited capability in regards to considering the effects of shallow groundwater table, which significantly affects estimation of infiltration and runoff in the VFS. In addition, the system does not simulate the transport of pesticides that can be implemented in agricultural areas. Thus, the web-based VFSMOD system was enhanced in this study by incorporating the groundwater table in simulating soil moisture dynamics and by adding a new water quality module for evaluating the VFS performances effectively. Results show that the trapping efficiencies of sediment (61%) and a pesticide (57%) were simulated with the VFS width of 10 m for a single storm event, improving the VFSMOD performance with a shallow groundwater table. The optimum VFS widths for multiple storm events were found for a given reduction goal.
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Acknowledgments
This study is supported by Kangwon National University. Author Contributions: K. J. L. wrote the paper and developed the web-based software; Y. S. P. built the model inputs for the study watersheds; M. -K. K, J. J., B. A. E., and R. M. -C. provided critical comments and revision of manuscript; J. K. provided many useful suggestions to improve the analysis of the results.
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Published In
Journal of Hydrologic Engineering
Volume 23 • Issue 2 • February 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Nov 25, 2016
Accepted: Jul 31, 2017
Published online: Dec 9, 2017
Published in print: Feb 1, 2018
Discussion open until: May 9, 2018
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