5-Foot Resolution Land Cover Classification for Knox County, Tennessee
by Chris DeRolph·Updated 2d ago
61.2 MB1files
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Description
Land cover classification at 5-foot resolution for Knox County, Tennessee, created by Chris DeRolph. The dataset includes five classes—tree canopy, grass/herbaceous vegetation, impervious surfaces, bare/pervious ground, and open water—derived from USGS 3DEP LiDAR (2015-2016) and USDA NAIP imagery (2014). Overall classification accuracy was assessed at 72.6% across five urban park validation sites.
Use Cases
Analyze urban tree canopy coverage based on the 'tree canopy' class.
Model stormwater runoff potential based on the distribution of 'impervious surfaces' and 'bare/pervious ground'.
Assess green space availability in urban parks based on the 'grass/herbaceous vegetation' class.
Map water bodies for environmental planning based on the 'open water' class.
Strengths
High spatial resolution of 5 feet (1.5 meters).
Classification accuracy was quantitatively assessed via 1,000 random points, with an overall accuracy of 72.6%.
Producer's accuracy for the impervious surfaces class is reported as 94.2%.
Limitations
Validation focused on five urban park sites; accuracy in other environments is not assessed.
Producer's accuracy for the bare ground class is reported as 1.4%, indicating poor classification for that category.
Wetlands and cultivated agriculture were not mapped as distinct classes.
Provenance
Source
Chris DeRolph via figshare.
Collection Method
Rule-based landscape segmentation using USGS 3DEP LiDAR (2015-2016) and USDA NAIP imagery (2014).
Time Range
Based on source imagery from 2014-2016.
Freshness
Last updated 2026-06-03 14:23:55; freshness should be verified.
Geography
Knox County, Tennessee, USA.
Data is provided as a 61.2 MB GeoTIFF raster in EPSG:2274 projection; GIS software is required for use.