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:
CODE: National Wetlands Inventory code. See (1) INFO file
WTLDS-CODES in *path_name_suppressed*/info and (2) ASCII
file nwicodes.txt in /gisdb/ancillary. For more
information refer to the following:
Cowardin, L.M., V. Carter, and E.T. LaRoe. 1979.
Classification of Wetlands and Deepwater Habitats
of the United States. U.S. Department of Interior,
Fish and Wildlife Service, Washington, D.C.
FWS/OBS-79/31. 131 pp.
ILLCODE: Illinois Coding system. See INFO files WTLDS-ILLCODES
and WTLDS-CODEDEFS in *path_name_suppressed*/info.
Illinois Codes are based on groupings of the NWI codes.
For more information see Suloway, L. and M. Hubbell, 1994,
Wetland Resources of Illinois: An Analysis and Atlas.
Ill. Nat. Hist. Surv. Special Publ. 15. 88 pp.
ACRES: polygons = AREA sq ft / 43,560
* NOTE: The polygons represented in the database are
wetlands AND deepwater habitats.
If only wetland information is desired, wetland
codes must be reselected from the coverages.
Deepwater habitat is identified by L1, and R2
or R3 with OW, RB, or UB classes.
Visit the Illinois Natural Resources Geospatial Data Clearinghouse