Any hardcopies utilizing DNR data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent DNR data sets, nor to imply that changes they made were approved by DNR.
These data are not to be used for commercial profit
GIS Processing: INHS Staff Documentation: D. Nelson and S. Beaverson Quality Control: INHS Staff
Polygon attributes: NAT-PRES - the sequential numeric designated for each preserve by the Nature Preserves Commission. Polygons with a value of zero for this item are inholding areas not included in the boundary. NAME - the official name of the Nature Preserve.
Visit the Illinois Natural Resources Geospatial Data Clearinghouse