20210315 12244500 1.0 TRUE Map12 <div>The 2018 tree canopy layer was derived from 128 5-band, 1M resolution, Color Infrared (CIR), 2018 NAIP aerial orthoimagery rasters using Textron System’s Feature Analyst extension for ArcGIS. This method resulted in 297,512.5 acres of tree canopy within the Austin Watershed boundary, which is a 6.8% loss from the 2014 tree canopy calculation. An accuracy assessment using 200 random points and comparing the shapefile to the occurrence of tree canopy in the orthoimagery resulted in 90% accuracy.<span style='font-family:&quot;Segoe UI&quot;, Arial, sans-serif; font-size:13.3333px;'><br /></span></div><span style='font-family:&quot;Segoe UI&quot;, Arial, sans-serif; font-size:13.3333px;'>This dataset was created to determine the spatial distribution of tree canopy located within the City of Austin watershed boundary, where tree canopy is defined as ‘the layer of leaves, branches, and stems of trees that cover the ground when viewed from above’ (USDA 2009). This feature was created with the collaboration of a product specialist from Textron’s Feature Analyst software.</span><div><span style='font-family:&quot;Segoe UI&quot;, Arial, sans-serif; font-size:13.3333px;'>28 stretched color composite images were created from the USDA’s 2018 National Agriculture Imagery Program (NAIP) orthoimagery to better distinguish actual tree canopy. To generate the extraction using Feature Analyst, test polygons were drawn around a diverse selection of canopy located within the boundary that would allow the tool to learn where tree canopy is located. The final dataset resulted in 297,512.5 acres of tree canopy within the Austin Watershed boundary, which is a 6.8% loss from the 2014 tree canopy calculation.</span><br /></div> Tree canopy 2018Tree canopy2018NAIPFeature Analystpublic view The 2018 tree canopy layer was derived from 128 5-band, 1M resolution, Color Infrared (CIR), 2018 NAIP aerial orthoimagery rasters. Kathryn Johansen, William Burdick, City of Austin Watershed Protection Department <span style='color: rgb(76, 76, 76); font-family: &quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);'>This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. It does not represent an on-the-ground survey and represents only the approximate relative location of property boundaries. This product has been produced by the City of Austin for the sole purpose of geographic reference. No warranty is made by the City of Austin regarding specific accuracy or completeness.</span> 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