
Illinois Nature Preserves Commission 60th Anniversary
The Illinois Nature Preserves Commission is featuring protected sites throughout 2023 to celebrate its 60th anniversary.
December
As the year comes to a close and we reflect once again on the 60 th anniversary of the Illinois Nature Preserves Commission, we hope you will enjoy the last group of featured sites. You will travel underground to explore the largest cave system in the state and you will see Illinois’ only known valley glade. This month’s feature also includes a special “bonus” site, which will be presented for final dedication in January 2024, reminding us of natural areas yet to be discovered and protected. Throughout the year, the StoryMaps have led us on a journey that provides testimony to the important work of the Commission and secures the hope of an enduring resource of natural areas for present and future generations, as embodied by the legislation passed in 1963 to guide the way.
None of this would have been possible without the contributions of many staff from the INPC, IDNR, partners, and landowners. Featuring sites in our Nature Preserves System, while not comprehensive, consistently revealed the wonder of nature in Illinois, the need for partners, the passion of landowners and staff, and the constant need for vigilance and care. Every site has a story and we hope you enjoyed these. A special thanks to Heather McLean, who tirelessly worked throughout the year to assemble the materials and create these beautiful StoryMaps that provides a glimpse into our work and captures the “why” of what we do. Heather is a Graduate Public Service Intern from the University of Illinois at Springfield and we are forever grateful for her work.
- Cecil White Prairie Land and Water Reserve
- Fogelpole Cave Nature Preserve & Paul Wightman Subterranean Nature Preserve
- Spivey's Valley Glade Nature Preserve
- Prairie Ridge State Natural Area Complex
- Weston Cemetery Prairie Nature Preserve
- Bonus Site: Lost Flora Fen on Raccoon Creek Nature Preserve

November
Each site in the Nature Preserves system has a unique story to tell about its history. Whether it's about how the site became dedicated, prior land uses, or the commitment of landowners and organizations, every site has its own distinct and rich history. And who better to tell these stories than former and current directors of the INPC? The November feature will narrate site history, from committed stewards who purchased land when no one else would, to land organizations partnering together to protect and manage a site.
- White Rock Nature Preserve Complex
- Beaver Dam Glacial Drift Hill Prairie Land and Water Reserve
- Witter's Bobtown Hill Prairie Nature Preserve
- Embarras River Land and Water Reserve
- Carl N. Becker Savanna Nature Preserve

October
Come along and explore this month’s featured sites! Did you know that the Illinois Natural Areas Inventory serves as a guide for determining which lands and waters are eligible for protection in the Nature Preserves System? The qualifying natural areas and features can be vastly different yet equally important, as these stories show, from the largest remaining remnant of cypress-tupelo swamp in southern Illinois to the best remaining example of riparian dolomite prairie in the world.
- Meredosia Hill Prairie Nature Preserve
- Heron Pond - Little Black Slough Nature Preserve
- Bohm Woods Nature Preserve Complex
- Lockport Prairie Nature Preserve
- Hopewell Hill Prairies Nature Preserve

September
Illinois' strong commitment made it the first state to create such an innovative land protection program. Many other states have followed Illinois' lead in implementing an efficient and effective program to provide long-term protection for high quality natural areas. For the past 60 years staff of conservation agencies and organizations, volunteers, and site stewards have continued to protect hill prairies, streams, forests, woodlands, and other high quality natural areas, and will continue to do so in order to preserve the state's biodiversity and natural heritage for future generations.
- Gibbons Creek Barrens Land and Water Reserve (soon to be upgraded to Nature Preserve status)
- Josua Lindahl Hill Prairies Nature Preserve
- Fults Hill Prairie Nature Preserve
- Karcher's Post Oak Woods Nature Preserve
- Sandra Miller Bellrose Nature Preserve
August
As you explore this month’s edition, you will discover a diverse range of sites and features protected in Illinois’ Nature Preserves System, including the largest known winter roosting site for bald eagles along the Mississippi River; the first site to be registered exclusively for the presence of archaeological and cultural heritage resources; an island site cared for by volunteers; and a site known for its virtually undisturbed freshwater natural communities.
- Cedar Glen Nature Preserve
- Casper Bluff Land and Water Reserve
- Kankakee River Nature Preserve, Langham Island Unit
- Jordan Creek of the North Fork Nature Preserve
- Sand Prairie-Scrub Oak Nature Preserve
July
Lands in Illinois' Nature Preserves System can be privately or publicly owned, and range from 1-acre to several thousand acres. In the 60 years that the Illinois Nature Preserves Commission has been protecting land, it has accumulated a diverse range of sites, from those managed by private landowners named in honor of a lost loved one, to sites under 10 acres but still more floristically rich and biodiverse than those triple its size, to components of large State Parks that attract nature enthusiasts from across the state.
- Round Pond Nature Preserve
- Fern Rocks Nature Preserve
- Old Plank Road Prairie Nature Preserve
- Pilcher Park Nature Preserve & Land and Water Reserve
- Edward F. Vassallo Land and Water Reserve
June
Did you know that more than 25% of all occurrences of Illinois' threatened or endangered species are found on Illinois Nature Preserves Commission-protected lands? In this month's feature you will learn about sites which protect some of the rarest plant and animal species in the state, including the cerulean warbler, primrose violet, ornate box turtle, buffalo clover, eastern blue-eyed grass, and regal fritillary butterfly.
- Deer Grove West Woodland and Wetland Nature Preserve
- Buck Hill Bottom & Marilandica Acres Land and Water Reserves
- Iroquois Sands Land and Water Reserve
- Crevecoeur Nature Preserve
- American Beech Woods Nature Preserve
May
Together, protected areas in the Nature Preserves system preserve many of Illinois' natural treasures. INPC staff, landowners, volunteers, and other organizations work together to manage and maintain the ecological integrity of these high quality natural areas. The May edition highlights stewardship and management activities at the featured sites, including restoration to bring back remnant communities, control of invasive species to promote native vegetation, use of prescribed burning regimes, and regeneration of dominant native tree species.
- Stony Hills Nature Preserve
- Beadles Barrens Nature Preserve
- Elkhart Hill Grove Prairie Nature Preserve
- Kishwaukee Fen Nature Preserve
- Carpenter Park Nature Preserve
April
The April feature highlights Nachusa Grasslands and its high-quality relict natural communities, extensive grasslands, and animal reintroductions to restore prairie landscape. In addition to Nachusa Grasslands, it also focuses on Illinois' strong commitment to providing for its highest quality natural areas, including savanna remnants, rare undisturbed seep communities, the largest limestone glade system in the state, and historic cemetery prairies.
- Nachusa Grasslands Nature Preserve & Land and Water Reserve
- Harry N. Patterson Savanna Land and Water Reserve
- Forest Glen Seep Nature Preserve
- Collier Limestone Glade and Lafarge Limestone Glade Nature Preserves
- Loda Cemetery Prairie Nature Preserve
March
Each Nature Preserve and Land and Water Reserve is unique and has its own remarkable story to tell. In the March feature you will learn about some of these stories including incredible efforts to prevent the destruction of sites by keeping them undisturbed, families voluntarily preserving land to protect Illinois' natural heritage for future generations, and trees of such great size and height they were at one time state champions.
- Sweet Fern Savanna Land and Water Reserve
- Prospect Cemetery Prairie Nature Preserve
- Beall Woods Nature Preserve & Land and Water Reserve
- Jennings Family Hill Prairie Nature Preserve
- Russell M. Duffin Nature Preserve
February
The sites in February's feature honor a person whose career contributed greatly to the Illinois Nature Preserves Commission's work, a group of people who collectively are protecting a site, and a preserve that emphasizes outdoor education. Weaved throughout are good examples of restoration and partnership with others – professionals, landowners, forest preserve districts, and volunteers.
- Robert A. Evers Land and Water Reserve
- Boone Creek Fen Nature Preserve
- Ballard Nature Center Land and Water Reserve
- Cranberry Slough Nature Preserve
- Hickory Creek Barrens Nature Preserve
January
In January's feature, you will learn about the first dedicated Nature Preserve which initiated permanent protection of the highest quality natural areas remaining in Illinois, including loess hill prairies, glacial drift hill prairies, and the largest remnant prairie in the state. You will also learn the story of the first registered Land and Water Reserve.
- Illinois Beach State Park Nature Preserve
- Bob Spanski's Walden Too Land and Water Reserve
- Revis Spring Hill Prairie Nature Preserve
- Windfall Prairie Nature Preserve
- Goose Lake Prairie Nature Preserve