Illinois State Conservation Areas
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资源简介：
Appropriate for use in local and regional thematic analysis. Data are not accurate enough to be used as a geodetic or engineering base. Intended to include representation for each Conservation Area. This data set shows state Conservation Areas in Illinois. Digitized from maps provided by DNR, county plat books, USGS TIGER files, and 1:24,000 quadrangle maps. Boundaries are approximate and do not indicate ownership or property boundaries. The Illinois Department of Conservation Land and Water Report of 30 June 1994 was used as a reference. none
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