Jarlath O'Neil-Dunne, University of Vermont, Spatial Analysis Laboratory, Director 20160502 First raster digital data High resolution land cover dataset for Chicago Region including Cook County, DuPage County, Kane County, Kendall County, Lake County, McHenry County, Will County (IL), Lake County, LaPorte County and Porter County (IN). Seven land cover classes were mapped: (1) tree canopy, (2) grass/shrub, (3) bare earth, (4) water, (5) buildings, (6) roads, and (7) other paved surfaces. The primary sources used to derive this land cover layer were 2006, 2007, 2008, 2010, 2013, 2014 LiDAR data, 2010, 2012, 2013 NAIP imagery and 2010, 2013 Ortho imagery. Ancillary data sources included GIS data provided by each county or created by the UVM Spatial Analysis Laboratory. Object-based image analysis techniques (OBIA) were employed to extract land cover information using the best available remotely sensed and vector GIS datasets. OBIA systems work by grouping pixels into meaningful objects based on their spectral and spatial properties, while taking into account boundaries imposed by existing vector datasets. Within the OBIA environment a rule-based expert system was designed to effectively mimic the process of manual image analysis by incorporating the elements of image interpretation (color/tone, texture, pattern, location, size, and shape) into the classification process. A series of morphological procedures were employed to insure that the end product is both accurate and cartographically pleasing. Following the automated OBIA mapping a detailed manual review of the dataset was carried out at a scale of 1:5,000 and all observable errors were corrected. This dataset was developed as part of the Tree Canopy Assessment for the Chicago Region. It represents a 'top down' mapping perspective in which tree canopy over hanging other features is assigned to the tree canopy class. At the time of its creation this dataset represents the most detailed and accurate land cover dataset for the area. 20100831 Circa 2010 land cover data Complete None planned -88.841572 -86.287583 42.566996 41.055024 None Land Cover None Tree Canopy ISO 19115 Topic Category environment planningCadastre None Illinois None Indiana None Chicago None 2010 None None University of Vermont, Spatial Analysis Laboratory Jarlath O'Neil-Dunne Director mailing and physical

81 Carrigan Drive, Aiken 205

Burlington VT 05405 US 802-656-3324 joneildu@uvm.edu University of Vermont Spatial Analysis Laboratory, USDA Forest Service, and American Forests in collaboration with the Bank of America Charitable Foundation, Morton Arboretrum, Chicago Metropolitan Agency for Planning, and the Field Museum. Datasets provided by Cook County, DuPage County, Kane County, Kendall County, Lake County, McHenry County, Will County (IL), Lake County, LaPorte County and Porter County (IN), OpenStreetMap. Version 6.2 (Build 9200) ; Esri ArcGIS 10.4.1.5686 Seven land cover classes used. Land cover complete for the study area. None Source data Automated feature extraction 20151210 Manual review 20160414 Raster Grid Cell 152285 198189 Land Cover Class Internal Esri OID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Value Land Cover Code USDA Forest Service 1 Tree Canopy USDA Forest Service 2 Grass/shrub USDA Forest Service 3 Bare Earth USDA Forest Service 4 Water USDA Forest Service 5 Buildings USDA Forest Service 6 Road/Railroads USDA Forest Service 7 Other Paved Surfaces USDA Forest Service Count Number of pixels per class Internal Class 20160728 University of Vermont, Spatial Analysis Laboratory Jarlath O'Neil-Dunne Director mailing and physical

81 Carrigan Drive, Aiken 205

Burlington VT 05405 US 802-656-3324 joneildu@uvm.edu FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time