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| Created: | Aug 05, 2025 at 9:18 p.m. (UTC) | |
| Last updated: | Sep 03, 2025 at 5:23 p.m. (UTC) | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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Abstract
This work presents an ArcGIS toolbox for calculating and visualizing the effects of vegetation patches as sinks of surface runoff to reduce the soil erosion potential on hillslopes. The toolbox essentially calculates the flow distance from any location on a hillslope till obstructed by vegetation patches. As for innovative contributions, the toolbox enables water erosion assessments that 1) consider connectivity of surface flow, 2) are specific to location within a hillslope, and 3) allow rapid, multi-scenario analyses at high resolution over large spatial extents. The FlowDist2Veg toolbox takes advantage of the terrain flow analysis functions in the existing Hydrology toolbox and accepts input layers of any coordinate system and any resolution. The toolbox is written in python 3 and imports only the arcpy package. As an example, an analysis was done in Santa Rita Experimental Range to demonstrate the functionality of the toolbox.
Subject Keywords
Content
README.md
Summary
This work introduces an ArcGIS toolbox designed to calculate and visualize how vegetation patches function as sinks for surface runoff, thereby reducing soil erosion potential on hillslopes. The tool estimates flow distance from any point on a hillslope until runoff is interrupted by vegetation. Its key innovations include enabling erosion assessments that: (1) account for surface flow connectivity, (2) provide location-specific estimates within a hillslope, and (3) support rapid, multi-scenario analyses at high resolution across large spatial extents. The FlowDist2Veg toolbox builds on the terrain flow analysis functions of the existing Hydrology toolbox and is compatible with input layers of any coordinate system and resolution. It is implemented in Python 3 and requires only the arcpy package.
Connect to the ArcGIS Pro Toolbox
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Download and unzip FlowDist2Veg.zip file. The unzipped toolbox file is Flow Path to Vegetation.atbx
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In an opened ArcGIS Pro project, connect to the toolbox following the instruction https://pro.arcgis.com/en/pro-app/latest/help/projects/connect-to-a-toolbox.htm
Input Parameters
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Input DEM (Required): A Digital Elevation Model (DEM) raster layer needed. The output rasters will share the same extent with this DEM raster.
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Binary Vegetation (Required): A binary raster with 1 and 0 representing vegetation and no-vegetation, respectively. The raster could be of any resolution and any coordinate system. The tool will re-project and resample this raster.
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Flowlines (Required): A feature class of streamline of any coordinate system.
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Output Coordinate System (Required): A projected coordinate system with the linear unit of meters. All output rasters will be of this coordinate system.
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Output Resolution in Meter (Required): User-defined resolution in meters. All output rasters will be of this resolution.
Output GIS layers
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Output Flow Distance Raster without Vegetation: Output raster of flow distance to streams without obstructing vegetation.
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Output Flow Distance Raster with Vegetation: Output raster of flow distance to streams but with vegetation functioning as runoff sinks.
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Output Flow Distance Difference: The difference in flow distance due to the obstructing vegetation
Credits
Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
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| USDA Agricultural Research Service | LTAR-NEON Collaboration to Quantify Rangeland Vegetation Production Phase 2 | 58-2022-0-009 |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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