Assessing Surface Flowpath Interception by Vegetative Buffers Using ArcGIS Hydrologic Modeling and Geospatial Analysis for Rock Creek Watershed, Central Iowa Webber, David Bansal, Manveen Helmers, Matthew Arora, Kapil Mickelson, Steven Gelder, Brian Shrivastav, Manish Judge, Casey
dc.contributor.department Ecology, Evolution and Organismal Biology
dc.contributor.department Agricultural and Biosystems Engineering 2018-10-29T19:25:48.000 2020-06-29T22:43:25Z 2020-06-29T22:43:25Z Mon Jan 01 00:00:00 UTC 2018 2018-01-01
dc.description.abstract <p>Nonpoint-source (NPS) pollution is a major cause of surface water quality degradation due to the transport of chemicals, nutrients, and sediments into lakes and streams. Vegetative buffers comprise several effective landscape best management practices (BMPs) that include vegetative filter strips (VFS) and grassed waterways. However, some BMPs are less effective due to concentrated surface flow, improper cropland-to-VFS area ratios, and surface flowpaths that partially or completely bypass vegetative buffers. The overall objective of this study was to quantify the accuracy of simulated flowpaths relative to observed and global positioning system (GPS)-assisted ground-truthed surface flowpaths for improved placement of VFS and other vegetative buffers to effectively intercept surface runoff. This study was conducted on three research sites in Rock Creek watershed in central Iowa. Geographic information system (GIS) software was used for flowpath hydrologic modeling and geospatial map comparison analysis. Digital elevation model (DEM) datasets were used for flowpath simulation and included internet-available USGS 30 m × 30 m grid (typically used to design and site VFS buffers) and light detection and ranging (LiDAR) 5 m × 5 m grid DEMs. Results from this study indicate that the LiDAR 5 m × 5 m DEM generated significantly more accurate simulated flowpaths than the USGS 30 m × 30 m DEM. These results quantitatively underscore the efficacy of using high-resolution LiDAR DEM data to more accurately determine how well surface flowpaths are intercepted by VFS and other vegetative buffers. These results also demonstrate the benefits of coupling highresolution aerial imagery with quantitative geospatial map comparison data to improve visualization and comparison of field-scale and watershed-scale hydrologic and terrestrial attributes. Ultimately, the results and procedures from this study will be applied to the development of a novel cloud-based, user-interactive, virtual-reality decision support (DS) tool that can be used to remotely assess hydrologic landscape conditions, prescribe improvements to existing BMPs, and determine new sites for enhanced BMP placement and functionality within a high-resolution 3-D imagery environment.</p>
dc.description.comments <p>This article is published as Webber, D. F., M. Bansal, S.K. Mickelson, M.J. Helmers, K. Arora, K., B.K. Gelder, and C.J. Judge. "Assessing surface flowpath interception by vegetative buffers using ArcGIS hydrologic modeling and geospatial analysis for Rock Creek watershed, central Iowa," <em>Trans. ASABE </em>60, no. 1 (2018): 273-283. DOI: <a href="" target="_blank">10.13031/trans.12350</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 2162
dc.identifier.contextkey 11765836
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/884
dc.language.iso en
dc.source.bitstream archive/|||Sat Jan 15 02:17:47 UTC 2022
dc.source.uri 10.13031/trans.12350
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Environmental Indicators and Impact Assessment
dc.subject.disciplines Environmental Monitoring
dc.subject.disciplines Fresh Water Studies
dc.subject.disciplines Water Resource Management
dc.subject.keywords ArcGIS
dc.subject.keywords Best management practices (BMPs)
dc.subject.keywords Decision support (DS) tool
dc.subject.keywords Digital elevation model (DEM)
dc.subject.keywords Geospatial analysis
dc.subject.keywords Light detection and ranging (LiDAR)
dc.subject.keywords Nonpoint-source (NPS) pollution
dc.subject.keywords Surface runoff
dc.subject.keywords Vegetative filter strip (VFS)
dc.subject.keywords Watershed hydrologic modeling
dc.title Assessing Surface Flowpath Interception by Vegetative Buffers Using ArcGIS Hydrologic Modeling and Geospatial Analysis for Rock Creek Watershed, Central Iowa
dc.type article
dc.type.genre article
dspace.entity.type Publication
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