PROJCRS["NAD83(2011) / ICS83-Monmouth (ftUS)",
    BASEGEOGCRS["NAD83(2011)",
        DATUM["NAD83 (National Spatial Reference System 2011)",
            ELLIPSOID["GRS 1980",6378137,298.257222101,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",6318]],
    CONVERSION["Illinois Coordinate System of 1983 Monmouth zone (US survey foot)",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",40.2,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",-90.85,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",1.000024,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",9678000,
            LENGTHUNIT["US survey foot",0.304800609601219],
            ID["EPSG",8806]],
        PARAMETER["False northing",492000,
            LENGTHUNIT["US survey foot",0.304800609601219],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["northing (N)",north,
            ORDER[1],
            LENGTHUNIT["US survey foot",0.304800609601219]],
        AXIS["easting (E)",east,
            ORDER[2],
            LENGTHUNIT["US survey foot",0.304800609601219]],
    USAGE[
        SCOPE["Engineering survey, topographic mapping (large and medium scale)."],
        AREA["United States (USA) - Illinois - counties of Henderson, Mercer and Warren."],
        BBOX[40.62,-91.19,41.34,-90.43]],
    ID["EPSG",23309]]