Vegetative filter strip assessment in the state of Iowa

Bansal, Manveen

doi:10.31274/rtd-180813-7414

Cited by 4 publications

(9 citation statements)

References 6 publications

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“…The flowpath obtained using 5m resolution LiDAR generated DEM in this research is very much consistent with research conducted by Bansal (2006) where she used DEM generated from NRCS collected 5m × 5m data. The vertical accuracy of the LiDAR generated DEM data was found to be 31 cm which is very much similar to other studies.…”

Section: IIIsupporting

confidence: 87%

“…These same three sub-basin field sites were also the subject of a previous MS thesis research project (Bansal, 2006) based on the established VFS buffers designed by the Natural Resources Conservation Service (NRCS). The VFS buffers in these sites have been established for over ten years, and will be identified as sites 1, 2, and 3.…”

Section: Description Of Study Areamentioning

confidence: 99%

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Using ArcGIS hydrologic modeling and LiDAR digital elevation data to evaluate surface runoff interception performance of riparian vegetative filter strip buffers in central Iowa

Shrivastav

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Section: IIIsupporting

confidence: 87%

Section: Description Of Study Areamentioning

confidence: 99%

Using ArcGIS hydrologic modeling and LiDAR digital elevation data to evaluate surface runoff interception performance of riparian vegetative filter strip buffers in central Iowa

Shrivastav

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“…Although most of these BMPs have been effectively used for over 20 years to treat surface runoff from agricultural land, some VFS buffers have been found to be ineffective due to concentrated surface flow, improper cropland/contributing area to VFS buffer area ratios, and surface runoff that bypassed the VFS buffer area boundary (Bansal 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Research by Minnick (1964), Unwin (1981), Goodchild and Hunter (1997), Webber (2000), and Bansal (2006) contributed to the development and implementation of manual and automated GIS hydrologic modeling/geospatial analysis procedures for comparing observed and modeled surface and subsurface flowpaths and watershed boundaries derived from paper topographic and USGS 30 x 30-m Digital Elevation Model (DEM) map data. The USGS 30 x 30-m DEM data has been used for almost 20 years by USDA-NRCS personnel in the design and placement of VFS buffers and other BMPs.…”

Section: Introductionmentioning

confidence: 99%

Assessing Surface Flowpaths and Vegetative Buffers using ArcGIS Hydrologic Spatial Analysis for Rock Creek Watershed, Central Iowa

Bansal¹,

Mickelson²,

Helmers³

et al. 2016

2016 10th International Drainage Symposium

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“…VFS and other vegetative BMPs reduce the movement of suspended material in runoff, such as soil particles and plant residue, and promote settling of the material through sedimentation. Although most of these BMPs have been used effectively for several years to treat surface runoff from agricultural land, some VFS buffers have been found to be less effective due to concentrated surface flow (Meyer et al, 1995;Dosskey et al, 2002), improper cropland-to-VFS area ratios (Dosskey et al, 2011), and surface runoff that partially or completely bypasses the VFS area (Bansal, 2006).…”

mentioning

confidence: 99%

Assessing Surface Flowpath Interception by Vegetative Buffers Using ArcGIS Hydrologic Modeling and Geospatial Analysis for Rock Creek Watershed in Central Iowa

Webber¹,

Bansal²,

Mickelson³

et al. 2018

Transactions of the ASABE

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Abstract. 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 high-resolution 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. Keywords: ArcGIS, Best management practices (BMPs), Decision support (DS) tool, Digital elevation model (DEM), Geospatial analysis, Light detection and ranging (LiDAR), Nonpoint-source (NPS) pollution, Surface runoff, Vegetative filter strip (VFS), Watershed hydrol

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Vegetative filter strip assessment in the state of Iowa

Cited by 4 publications

References 6 publications

Using ArcGIS hydrologic modeling and LiDAR digital elevation data to evaluate surface runoff interception performance of riparian vegetative filter strip buffers in central Iowa

Using ArcGIS hydrologic modeling and LiDAR digital elevation data to evaluate surface runoff interception performance of riparian vegetative filter strip buffers in central Iowa

Assessing Surface Flowpaths and Vegetative Buffers using ArcGIS Hydrologic Spatial Analysis for Rock Creek Watershed, Central Iowa

Assessing Surface Flowpath Interception by Vegetative Buffers Using ArcGIS Hydrologic Modeling and Geospatial Analysis for Rock Creek Watershed in Central Iowa

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