Illinois Natural Areas Inventory (INAI) sites June 2021 INAI Category Descriptions: Cat. I = High quality natural community and natural community restorations Cat. II = Specific suitable habitat for state-listed species or state-listed species relocations Cat. III = State dedicated Nature Preserves, Land and Water Reserves, & Natural Heritage Landmarks Cat. IV = Outstanding geological features Cat. V = Not used at this time Cat. VI = Unusual concentrations of flora or fauna and high quality streams INAI Name INAI Number Categories Acreage Adams Allendale Spring 1967 III 22.54 Burton Cave 0385 II, III 83.27 Burton Creek Natural Area 0147 I, II 185.02 Byler Cemetery Savanna 0371 I, III 1.08 Columbus Cemetery Site 1604 II 0.89 Fall Creek Gorge 0148 I, III 52.56 Fishhook Creek Area 1282 II 2,272.80 Long Island 0146 I, II 4,677.47 McKee Creek Barrens and Sedge Seep 0173 I, II, III 375.18 Mill Creek Geological Area - A 0444 IV 1.78 Paloma Railroad Prairie 1644 I 9.48 Quincy Bed 1862 II, VI 5.70 Quincy Geological Area 0401 IV 1.59 Rice School Geological Area 0507 IV 15.58 Zion Church Geological Area 0508 IV 2.30 Total # of Sites in County 15 Total acreage of Sites in County 7,707 Alexander Big Brushy Ridge 1145 I, II 168.98 Black Powder Hollow Geological Area 0511 IV 3.93 Brown's Bar 1146 II 701.62 Bumgard Island 1147 II 1,856.85 Burnham Island 1148 II 1,153.07 Clear Creek Swamp 0309 II 95.13 Dongola Hollow Geological Area 0403 IV 5.73 Gale Geological Area 0404 IV 1.06 Gale North Geological Area 0408 IV 0.74 Horseshoe Forest 0374 I, III 580.41 Horseshoe Lake 0375 I, II, III 353.25 Horseshoe Lake Botanical Area 0386 II 0.16 Horseshoe Lake South 0376 II 1.30 Horseshoe Lake State Conservation Area 1155 II, III 73.98 Lake Creek 1153 II 60.21 Magazine Mine Hollow 1421 II, VI 2,549.37 Miller Creek 1422 II, VI 41.97 Miller Hills 1785 II, VI 1,205.68 Opossum Trot Trail 0310 I, II 48.95 Ozark Hill Prairies 0509 I, II 469.62 Provo Cemetery Barrens 1144 I 87.79 South Tamms Marsh 1601 II 11.95 1 INAI Name INAI Number Categories Acreage Thebes Area 1151 II, IV 884.92 Unity Area 1152 II 31.08 Wolf Creek Area 0510 II 646.65 Total # of Sites in County 25 Total acreage of Sites in County 11,034 Bond East Fork Shoal Creek - Greenville Reach 1673 VI 0.64 East Fork Shoal Creek Pocahontas Reach 1913 VI 18.69 Mulberry Grove Geological Area 0547 IV 6.48 Mulberry Grove Railroad Prairie 1299 II 11.21 Shoal Creek - Pocahontas Reach 1672 VI 2.16 Shoal Creek - Ripson Bridge Reach 1674 VI 2.23 Sorento Geological Area 0429 IV 10.54 Total # of Sites in County 7 Total acreage of Sites in County 52 Boone Flora Prairie 0348 III 9.67 Kinnikinnick Creek 0379 II, III 125.92 Kishwaukee River 0720 II, VI 669.33 Piscasaw Creek 1508 VI 88.58 Total # of Sites in County 4 Total acreage of Sites in County 894 Brown Benville Area 1218 II 20.87 Brown019 1809 I 44.46 Island Road Bed 1661 VI 1.82 Little Creek Bed 1662 VI 4.20 Little Missouri Creek Dells 1219 II 62.64 Lower LaMoine Confluence Floodplain Forest 1869 I 155.13 McKee Creek Barrens and Sedge Seep 0173 I, II, III 375.18 McKee Creek Versailles Reach 1919 VI 38.65 Moores Island Bed 1790 VI 3.45 Snyder Hill Prairie 0349 I 3.24 Spencer Farm Geological Area 0513 IV 5.18 Spunky Bottoms 1777 II 783.06 Wilson Daymark Bed 1663 VI 1.30 Total # of Sites in County 13 Total acreage of Sites in County 1,499 Bureau Big Bureau Creek 1467 VI 49.33 Bureau076 1843 I 34.72 Daisy Hill Prairie 1824 I 0.58 Fairfield Ditch 1423 II 132.08 Gold Prairie 1725 II 13.49 2 INAI Name INAI Number Categories Acreage Goose Lake Botanical Area 1676 II 2.45 Hennepin Canal - Wyanet Prairie 1642 I 8.23 Hennepin Illinois River Floodplain 1546 II 70.23 Hetzler Cemetery Prairie 0351 I, III 1.96 McCune Sand Prairie 0350 II, III 271.43 Miller - Anderson Woods 0382 I, II, III 488.31 Myers Forest and Game Preserve 0050 I, III 19.85 Spring Lake - Bureau 1688 II, VI 202.21 Spring Valley Geological Area 0409 IV 5.24 Wyanet Geological Area 0514 IV 45.66 Total # of Sites in County 15 Total acreage of Sites in County 1,346 Calhoun Batchtown Mussel Bed 1592 II, VI 518.80 Calhoun002 1819 I 197.04 Calhoun013 1867 I 40.85 Calhoun033 1868 I 9.98 Cap Au Gris 0406 I, II 105.56 Carroll Island Bed 1695 VI 5.82 Clarksville Dam Bed 1593 VI 5.68 Clarksville Island 1226 II 785.32 Coon Island Bed 1696 II, VI 3.42 Golden Eagle Geological Area 0446 IV 0.97 Hamburg Southeast Geological Area 0383 IV 6.27 Jennings Hill Prairie 1227 I, III 27.56 Kamp's Glade 0313 I 231.37 Kelly Island Bed 1697 VI 17.51 Lead Hollow Glade 0316 I, II, III 29.10 Maple Island Bed 1698 VI 14.90 McNabb Hollow 0318 I 20.21 Mississippi River - Cap Au Gris 1424 II 1,500.19 Monterey School Geological Area 0946 IV 18.53 Mortland Glade 0314 I 103.52 Mozier Landing Bed 1594 II, VI 17.12 Osterman Hill Prairies 1468 I 13.25 Riprap Landing Woods 0317 I 180.67 Sny Island Bed 1699 VI 31.53 Swarnes Hill Prairie 0298 I, II, III 43.31 Two Branch Hollow Hill Prairie 0297 I, III 11.44 West Point Landing Geological Area 0430 IV 38.58 Wildcat Hollow North Geological Area 0515 IV 11.34 Total # of Sites in County 28 Total acreage of Sites in County 3,990 Carroll Argo Fay Site 1290 II 0.22 Ayers Sand Prairie 0402 I, II, III 120.22 Brookville Lutheran Cemetery Prairie 0414 I, III 1.84 Carroll003 1848 I 0.73 Carroll040 1849 I 51.40 French Bluff 1680 II 27.18 Goose Point Botanical Area 1288 II 1.80 Mississippi Palisades Bluff 0410 I, II, III 479.69 3 INAI Name INAI Number Categories Acreage Mississippi Palisades Geological Area 0384 IV 2.71 Mt. Carroll North Geological Area 0518 IV 3.38 Savanna Army Depot 0965 I, II 14,400.14 Savanna South Railroad Prairie 0416 II, III 44.89 Spring Lake - Carroll 1289 II 5,597.21 Thomson - Fulton Sand Prairie 1023 I, II, III 313.86 Wacker Geological Area 0517 IV 12.08 Waukarusa Canyon 0411 I, II, III, VI 168.44 Total # of Sites in County 16 Total acreage of Sites in County 21,226 Cass Beardstown Marsh 1332 II, III 475.52 Beardstown Railroad Prairie 1331 II, III 18.22 Bluff Springs Hill Prairie 1333 II, III 4.60 Bluff Springs Sand Pond 1087 II, III 64.03 Bulrush Sand Pond 1425 II 3.52 Chandlerville - Snyder Hill Prairie 1535 I, II, III 102.70 Charles *Chinee* Colvin Sand Prairie 1740 III 39.84 Cottonwood Geological Area 0519 IV 16.05 Cox Creek Hill Prairie 1334 I, II, III 652.43 Excel Sand Prairie 1795 III 6.31 Frederick Landing Bed 1686 VI 25.54 Hagener Sand Pond 1426 II 1.68 Illinois River Sand Areas 1744 III 39.56 Meredosia Refuge 1352 II 5,714.66 Panther Creek Hill Prairie 0111 I, II, III 55.72 Shick Shack Sand Pond 0112 I, II, III 59.04 Total # of Sites in County 16 Total acreage of Sites in County 7,279 Champaign Barnhart Prairie 1720 II, III 160.39 Big Ditch Fisher Reach 1878 II, VI 10.14 Brownfield Woods 0052 I 63.20 Champaign County Railroad Prairie 1816 I 2.32 Edgewood Farm 1742 III 147.50 Edna Edwards Burnett 1872 III 18.02 Embarras River - Nanney Research Reach 1808 VI 34.77 Little Vermilion River 1140 II, III, VI 1,227.00 Mahomet Botanical Area 1428 II, III 27.77 Mahomet Site 1117 II 3.52 Middle Fork of the Vermilion River 0494 II, III, IV, VI 457.88 Nettie Hart Woodland Memorial 0352 I 39.22 Salt Fork Vermilion River Segment 1427 II, III, VI 609.34 Sangamon River 1449 II, III, VI 822.39 Spoon River 1429 VI 29.35 Tomlinson Pioneer Cemetery Prairie 1533 III 0.97 Trelease Woods 0051 I 58.89 Total # of Sites in County 17 Total acreage of Sites in County 3,713 4 INAI Name INAI Number Categories Acreage Christian Anderson Prairie 1736 III 12.88 Berry's Woods 0013 I 20.92 Total # of Sites in County 2 Total acreage of Sites in County 34 Clark American Beech Woods 0047 I, II, III 1,601.96 Marshall North Geological Area 0447 IV 15.16 Miller Tract 1417 I 51.90 Riedle's Bluffs 1586 III, VI 63.75 Rocky Branch 0353 I, II, III 191.78 Wabash River - Mount Carmel 1324 II, III, VI 3,955.92 West Fork Relict Site 1081 VI 2.53 Total # of Sites in County 7 Total acreage of Sites in County 5,883 Clay Clay County Prairie Habitat 1314 II 3,702.51 Clay022 1957 I 127.48 Clay025 1958 I 42.16 Dismal Creek Savanna 1532 I, II 50.49 Flag Pond 0037 I, III 198.07 Hanging Rock 0679 I, II, III 116.84 Little Wabash Hord Reach 1887 II, VI 34.23 Little Wabash River 1156 II, VI 1,971.14 Padgett Brothers Sweet Gum Woods 1754 III 63.06 Total # of Sites in County 9 Total acreage of Sites in County 6,306 Clinton Eversgerd Flatwoods 0320 I 37.89 Kaskaskia River - Carlyle 1514 III, VI 524.19 Lost Creek Prairie 0418 I, III 310.49 Pelican Pouch Woods 1630 I 104.49 Shoal Creek - Goodings Ford Segment 1675 II, VI 0.58 Shoal Creek Bartelso Reach 1923 VI 35.95 Shoal Creek Breese Reach 1924 VI 36.73 Sugar Creek New Baden Reach 1945 VI 21.90 West End Sportsman's Club Woods 0865 I, III 280.81 Total # of Sites in County 9 Total acreage of Sites in County 1,353 Coles Ambraw Woods 1873 III 75.38 Center School Geological Area 0448 IV 5.10 Coles002 1802 I 2.52 Embarras River 0950 II, III, VI 1,260.18 5 INAI Name INAI Number Categories Acreage Embarras River - Camargo 1120 II, III, VI 595.40 Embarras River Land and Water Reserve 1743 III 976.40 Five-Mile Hill Prairie 0008 I 3.17 Hillside Marsh 0354 I, III 77.94 Humboldt Railroad Prairie 0389 I 0.87 Hutton Geological Area 0449 IV 0.75 Kaskaskia River - Cooks Mills Segment 1649 II, VI 159.36 Little Embarras River Ashmore Segment 1886 II, VI 59.43 Riley Creek 1430 VI 37.55 Sargent's Woods 0007 I, III 107.79 Stevens Hill Prairie 0010 I 12.47 Warbler Woods 1585 I, II, III 737.75 Water Works Hill Prairie 0005 I, III 198.72 Total # of Sites in County 17 Total acreage of Sites in County 4,311 Cook 130th Street Marsh 1354 II 30.79 Baker's Lake 1386 II, III 222.73 Barrington Hills Botanical Area 0633 II 2.35 Black Partridge Woods 0255 I, II, III 76.83 Bluff Spring Fen 0537 I, II, III 108.20 Bridgeview Prairie 1712 I 9.08 Brookfield Prairie 1375 II 20.70 Burnham Prairie 0461 I, III 111.64 Busse Woods 0534 I, II, III 653.14 Calumet City Prairie 0497 I, II 87.27 Cap Sauers Holdings 0422 III 1,495.15 Carle Woods 1379 II 136.02 Chicago Ridge Prairie 0398 I, III 16.54 Clayton F.