All Ohio state nature preserves
Every dedicated preserve and natural area in ODNR's lands layer.
Every preserve in ODNR's GIS layer
Our count: 157 preserves in 61 counties; 104 have an ODNR visitor page and 95 a page here; 90 have a row in ODNR's guide; 44 match the permit table (4 for a part or activity) and 2 more say on their ODNR page that a permit is needed.
Trail mileages are from ODNR's printed guide (the guide). Verify current trail distances, closures and access with each preserve's official source before planning a visit.
| Preserve | County | Mapped acres (our sum) | Trail miles (guide) | Access (permit status in our sources) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Acadia Cliffs State Nature Preserve ODNR pagesource records
No row in ODNR's printed guide. | Washington | 107.77 | none identified | ||||||||||||||||
| Adams Lake Prairie State Nature Preserve | Adams | 20.23 | 0.6 | none identified | |||||||||||||||
| Anderson Compass Plant Prairie State Nature Preserve | Lawrence | 16.64 | Permit (per its ODNR page) | ||||||||||||||||
| Audubon Islands State Nature Preserve | Lucas | 170.43 | none identified | ||||||||||||||||
Augusta-Anne Olsen State Nature Preservesource records
ODNR guide row, as printed: | Huron | 130.38 | 3.5 | none identified | |||||||||||||||
| Aurora Sanctuary State Nature Preserve | Portage | 165.86 | 2 | none identified | |||||||||||||||
| Baker Swamp State Nature Preserve | Jackson | 180.75 | none identified | ||||||||||||||||
| Baker Woods State Nature Preserve | Mercer | 47.41 | 1.3 | none identified | |||||||||||||||
Beck Fen State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Portage | 10.12 | Permit | ||||||||||||||||
Betsch Fen State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Ross | 91.85 | Permit | ||||||||||||||||
| Bigelow Cemetery State Nature Preserve | Madison | 0.55 | 0.1 | none identified | |||||||||||||||
Bison Hollow State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Hocking, Vinton | 386.61 | Permit | ||||||||||||||||
| Blackhand Gorge State Nature Preserve | Licking | 1,136.72 | 10 ~ | none identified | |||||||||||||||
| Boch Hollow State Nature Preserve | Hocking | 730.99 | 7 | Permit for a named part | |||||||||||||||
Bonnett Pond Bog State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Holmes | 16.53 | Permit | ||||||||||||||||
| Boord State Nature Preserve | Washington | 123.74 | 0.8 | none identified | |||||||||||||||
| Brinkhaven Oak Barrens State Nature Preserve | Holmes | 114.46 | Permit (per its ODNR page) | ||||||||||||||||
Brown's Lake Bog State Nature Preservesource records
ODNR guide row, as printed: | Wayne | 100.69 | 1 | none identified | |||||||||||||||
| Burton Wetlands State Nature Preserve | Geauga | 307.38 | 1.5 | none identified | |||||||||||||||
| Caesar Creek Gorge State Nature Preserve | Warren | 500.98 | 2.3 | none identified | |||||||||||||||
| Campbell State Nature Preserve | Lucas | 233.47 | 2.3 | none identified | |||||||||||||||
| Carmean Woods State Nature Preserve | Crawford | 38.06 | Permit | ||||||||||||||||
| Cedar Bog State Nature Preserve | Champaign | 439.55 | 1.1 ~ | none identified | |||||||||||||||
Centerville Mills Falls Dedicated Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Portage | 8.46 | Permit | ||||||||||||||||
| Chaparral Prairie State Nature Preserve | Adams | 129.91 | 2 ~ | none identified | |||||||||||||||
| Christmas Rocks State Nature Preserve | Fairfield | 691.57 | 4.5 | none identified | |||||||||||||||
| Clear Creek State Nature Preserve | Fairfield, Hocking | 4,949.59 | 12 | none identified | |||||||||||||||
| Clear Fork Gorge State Nature Preserve | Ashland | 24.69 | 0.3 | none identified | |||||||||||||||
| Clifton Gorge State Nature Preserve | Greene | 238.27 | 3 ~ | none identified | |||||||||||||||
| Collier State Nature Preserve | Seneca | 117.61 | 1.2 | none identified | |||||||||||||||
| Conkles Hollow State Nature Preserve | Hocking | 87.02 | 3.5 ~ | none identified | |||||||||||||||
| Conneaut Swamp State Nature Preserve | Ashtabula | 55.14 | none identified | ||||||||||||||||
| Cooperrider Kent Bog State Nature Preserve | Portage | 120.61 | 0.5 | none identified | |||||||||||||||
| Coyote Run State Nature Preserve | Fairfield | 228.86 | Permit | ||||||||||||||||
Crabill Fen Non-Dedicated Natural Areasource records
No row in ODNR's printed guide. ODNR permit table row: | Clark | 27.28 | Permit | ||||||||||||||||
| Cranberry Bog State Nature Preserve | Licking | 10.29 | Permit | ||||||||||||||||
Crane Hollow State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Hocking | 1,524.17 | Permit | ||||||||||||||||
| Crooked Run State Nature Preserve | Clermont | 76.55 | 2 | none identified | |||||||||||||||
| Culberson Woods State Nature Preserve | Clinton | 240.50 | 3 | none identified | |||||||||||||||
Daughmer Savannah State Nature Preservesource records
ODNR guide row, as printed: | Crawford | 33.69 | 1 | none identified | |||||||||||||||
| Davey Woods State Nature Preserve | Champaign | 98.43 | 1.5 | none identified | |||||||||||||||
| Davis Memorial State Nature Preserve | Adams | 166.69 | 2 | none identified | |||||||||||||||
| Desonier State Nature Preserve | Athens | 496.17 | 2.7 | none identified | |||||||||||||||
Doty Highbank State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Butler | 36.72 | Permit | ||||||||||||||||
| Drew Woods State Nature Preserve | Darke | 14.58 | none identified | ||||||||||||||||
| Dupont Marsh State Nature Preserve | Erie | 117.28 | 0.6 | none identified | |||||||||||||||
| Eagle Creek State Nature Preserve | Portage | 569.10 | 4.5 | none identified | |||||||||||||||
| Edward S. Thomas State Nature Preserve | Franklin | 318.31 | 1 | none identified | |||||||||||||||
Emerald Hills State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Belmont | 70.66 | Permit | ||||||||||||||||
| Erie Sand Barrens State Nature Preserve | Erie | 30.48 | 1 | none identified | |||||||||||||||
Flatiron Bog State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Portage | 96.70 | Permit | ||||||||||||||||
Forrest Woods State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Paulding | 257.86 | Permit | ||||||||||||||||
Fort Hill Earthworks – Brokaw Woods Componentsource records
No row in ODNR's printed guide. | Highland | 155.98 | none identified | ||||||||||||||||
| Fort Hill Earthworks State Nature Preserve | Highland | 1,273.50 | none identified | ||||||||||||||||
| Fowler Woods State Nature Preserve | Richland | 180.67 | 1.2 | none identified | |||||||||||||||
| Gahanna Woods State Nature Preserve | Franklin | 55.40 | 1 | none identified | |||||||||||||||
Gallagher Springfield Fen State Nature Preservesource records
ODNR guide row, as printed: | Clark | 212.32 | 1.2 | none identified | |||||||||||||||
Girdham Road Dunes State Nature Preservesource records
No row in ODNR's printed guide. | Lucas | 19.02 | none identified | ||||||||||||||||
Glade Wetlands Dedicated Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Pike, Jackson | 293.19 | Permit | ||||||||||||||||
Gladys Riley Golden-star State Nature Preservesource records
No row in ODNR's printed guide. | Scioto | 178.99 | none identified | ||||||||||||||||
| Goll Woods State Nature Preserve | Fulton | 339.92 | 5 | none identified | |||||||||||||||
| Goode Prairie State Nature Preserve | Miami | 28.65 | 0.5 | none identified | |||||||||||||||
Gott Fen State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Portage | 44.97 | Permit | ||||||||||||||||
Greenbelt State Nature Preserve ODNR pagesource records
No row in ODNR's printed guide. | Hamilton | 65.59 | none identified | ||||||||||||||||
| Gross Memorial Woods State Nature Preserve | Shelby | 48.68 | 0.5 | none identified | |||||||||||||||
Hach-Otis State Nature Preservesource records
ODNR guide row, as printed: Verify current visiting hours and access with the managing organization before relying on these guide hours. | Lake | 128.76 | 1.5 | none identified | |||||||||||||||
| Halls Creek Woods State Nature Preserve | Warren | 273.16 | 2 | none identified | |||||||||||||||
| Headlands Dunes State Nature Preserve | Lake | 19.40 | 1 ~ | none identified | |||||||||||||||
| Herrick Fen State Nature Preserve | Portage | 139.95 | 1 | none identified | |||||||||||||||
| Hueston Woods State Nature Preserve | Butler, Preble | 217.66 | 3 | none identified | |||||||||||||||
| Hutchins (Highbanks) State Nature Preserve | Delaware, Franklin | 201.44 | 2 | none identified | |||||||||||||||
| Irwin Prairie State Nature Preserve | Lucas | 210.41 | 1.3 ~ | none identified | |||||||||||||||
| Jackson Bog State Nature Preserve | Stark | 57.57 | 1.3 ~ | none identified | |||||||||||||||
Jefferson Ridge State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Ross | 180.62 | Permit listed (scope unclear) | ||||||||||||||||
| Johnson Ridge State Nature Preserve | Adams | 221.69 | 1.2 | none identified | |||||||||||||||
| Johnson Woods State Nature Preserve | Wayne | 206.14 | 1 | none identified | |||||||||||||||
| Ka Ma Ma Prairie State Nature Preserve | Adams | 84.85 | none identified | ||||||||||||||||
Karlo Fen Dedicated Natural Areasource records
No row in ODNR's printed guide. ODNR permit table row: | Summit | 17.87 | Permit | ||||||||||||||||
| Kendrick Woods State Nature Preserve | Allen | 169.04 | 5 | none identified | |||||||||||||||
| Kessler Swamp State Nature Preserve | Hocking | 20.40 | none identified | ||||||||||||||||
| Kiser Lake Wetlands State Nature Preserve | Champaign | 53.75 | 0.6 | none identified | |||||||||||||||
| Kitty Todd State Nature Preserve | Lucas | 378.71 | 1 | none identified | |||||||||||||||
Kleinmaier Rhododendron Hollow State Nature Preservesource records
No row in ODNR's printed guide. | Fairfield | 30.71 | none identified | ||||||||||||||||
| Knox Woods State Nature Preserve | Knox | 28.42 | 1 | none identified | |||||||||||||||
| Kyle Woods State Nature Preserve | Mahoning | 81.71 | .75 | none identified | |||||||||||||||
Ladd Natural Bridge State Nature Preserve ODNR pagesource records
No row in ODNR's printed guide. ODNR permit table row: | Washington | 93.08 | Permit | ||||||||||||||||
| Lake Katharine State Nature Preserve | Jackson | 2,189.93 | 6 | Permit for an activity (per ODNR's guide) | |||||||||||||||
| Lakeside Daisy State Nature Preserve | Ottawa | 137.21 | Permit for a named part | ||||||||||||||||
Lash's Bog State Nature Preservesource records
No row in ODNR's printed guide. | Stark | 120.33 | none identified | ||||||||||||||||
| Lawrence Woods State Nature Preserve | Hardin | 1,036.21 | 1.1 | none identified | |||||||||||||||
Little Darby Creek State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Madison | 436.30 | Permit | ||||||||||||||||
Little Rocky Hollow State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Hocking | 255.32 | Permit | ||||||||||||||||
Mantua Bog State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Portage | 96.74 | Permit | ||||||||||||||||
Mccracken Fen State Nature Preserve ODNR pagesource records
ODNR guide row, as printed: | Logan | 92.43 | 1 | none identified | |||||||||||||||
| Mentor Marsh State Nature Preserve | Lake | 699.77 | 4 | none identified | |||||||||||||||
Milford Center Prairie Non-Dedicated Natural Areasource records
ODNR guide row, as printed: | Union | 9.71 | 1.5 | none identified | |||||||||||||||
| Miller Nature Sanctuary State Nature Preserve | Highland | 86.86 | 3 | none identified | |||||||||||||||
Miriam Walter Barrens State Nature Preserve ODNR pagesource records
No row in ODNR's printed guide. ODNR permit table row: | Meigs | 118.88 | Permit | ||||||||||||||||
| Morris Woods State Nature Preserve | Licking | 107.21 | 1.5 | none identified | |||||||||||||||
Mud Lake Bog State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Williams | 74.07 | Permit | ||||||||||||||||
Myersville Fen State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Summit | 26.47 | Permit | ||||||||||||||||
Newberry Wildlife Sanctuary State Nature Preserve ODNR pagesource records
No row in ODNR's printed guide. | Hamilton | 49.82 | none identified | ||||||||||||||||
| North Pond State Nature Preserve | Erie | 23.58 | 1 | none identified | |||||||||||||||
| North Shore Alvar State Nature Preserve | Erie | 4.72 | 0.3 | none identified | |||||||||||||||
| Novak Sanctuary State Nature Preserve | Portage | 151.25 | 2.5 | none identified | |||||||||||||||
Old Woman Creek State Nature Preserve and NERRsource records
ODNR guide row, as printed: ODNR permit table row: | Erie | 584.83 | 1.3 ~ | Permit to kayak or canoe | |||||||||||||||
| Owens Fen State Nature Preserve | Logan | 18.21 | 0.5 | none identified | |||||||||||||||
Pallister State Nature Preserve ODNR pagesource records
No row in ODNR's printed guide. ODNR permit table row: | Ashtabula | 103.45 | Permit | ||||||||||||||||
| Pickerington Ponds State Nature Preserve | Fairfield, Franklin | 1,395.43 | 0.5 ~ | none identified | |||||||||||||||
| Plum Run Prairie State Nature Preserve | Adams | 139.42 | none identified | ||||||||||||||||
| Portage Lakes Wetland State Natural Area | Summit | 9.11 | none identified | ||||||||||||||||
Prairie Road Fen Non-Dedicated Natural Areasource records
No row in ODNR's printed guide. ODNR permit table row: | Clark | 87.26 | Permit | ||||||||||||||||
| Raven Rock State Nature Preserve | Scioto | 181.67 | Permit | ||||||||||||||||
| Rhododendron Cove State Nature Preserve | Fairfield | 74.84 | 1.2 | none identified | |||||||||||||||
Riddle State Nature Preserve ODNR pagesource records
ODNR guide row, as printed: | Athens | 117.98 | 1.5 | none identified | |||||||||||||||
| Rockbridge State Nature Preserve | Hocking | 206.55 | 2.8 | none identified | |||||||||||||||
Rocky Fork Gorge - Etawah Woods State Nature Preservesource records
ODNR guide row, as printed: | Highland | 1,888.67 | 1.3 | none identified | |||||||||||||||
Rome State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Ashtabula | 105.65 | Permit | ||||||||||||||||
Rothenbuhler Woods State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Monroe | 46.32 | Permit | ||||||||||||||||
Saint Mary's River Wetlands Non-Dedicated Natural Areasource records
No row in ODNR's printed guide. ODNR permit table row: | Mercer | 69.60 | Permit | ||||||||||||||||
Saltpetre Cave State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Hocking | 14.25 | Permit | ||||||||||||||||
| Scioto Brush Creek State Nature Preserve | Scioto | 44.90 | 1.5 | none identified | |||||||||||||||
| Sears Woods State Nature Preserve | Crawford | 98.80 | 1.2 | none identified | |||||||||||||||
| Seymour Woods State Natural Area | Delaware | 103.93 | 1.8 | Permit for a named part | |||||||||||||||
| Shallenberger State Nature Preserve | Fairfield | 87.63 | 1.8 | none identified | |||||||||||||||
| Sharon Woods Gorge State Nature Preserve | Hamilton | 18.82 | 0.8 | none identified | |||||||||||||||
| Sheepskin Hollow State Nature Preserve | Columbiana | 460.77 | none identified | ||||||||||||||||
Sheick Hollow State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Hocking | 159.16 | Permit | ||||||||||||||||
| Sheldon Marsh State Nature Preserve | Erie | 470.03 | 2 ~ | none identified | |||||||||||||||
| Shoemaker State Nature Preserve | Adams | 22.34 | 1.5 | none identified | |||||||||||||||
Siegenthaler-Kaestner Esker State Nature Preservesource records
ODNR guide row, as printed: | Champaign | 37.68 | 1.5 | none identified | |||||||||||||||
| Smith Cemetery State Nature Preserve | Madison | 0.63 | 0.1 | none identified | |||||||||||||||
| Solon Woods State Nature Preserve | Cuyahoga | 129.79 | 1.25 | none identified | |||||||||||||||
Spring Beauty Dell State Nature Preserve ODNR pagesource records
No row in ODNR's printed guide. | Hamilton | 40.93 | none identified | ||||||||||||||||
Spring Brook Sanctuary State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Geauga | 31.58 | Permit | ||||||||||||||||
| Springville Marsh State Nature Preserve | Seneca | 268.84 | 0.8 | none identified | |||||||||||||||
Stages Pond State Nature Preservesource records
ODNR guide row, as printed: | Pickaway | 200.07 | 3.3 ~ | none identified | |||||||||||||||
Stillwater Scenic River - Greenville Falls Non-Dedicated Natural Areasource records
No row in ODNR's printed guide. | Miami | 78.73 | none identified | ||||||||||||||||
Strait Creek Prairie Bluffs State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Pike, Adams | 567.25 | Permit | ||||||||||||||||
| Stratford Woods State Nature Preserve | Delaware | 94.30 | 1.3 | Permit | |||||||||||||||
| Swamp Cottonwood State Nature Preserve | Medina | 20.27 | none identified | ||||||||||||||||
Sylvan Deep State Nature Preservesource records
No row in ODNR's printed guide. | Jackson | 103.82 | none identified | ||||||||||||||||
| Tinkers Creek State Nature Preserve | Summit, Portage | 791.74 | 1.5 | none identified | |||||||||||||||
Travertine Fen State Nature Preservesource records
No row in ODNR's printed guide. | Greene | 20.66 | none identified | ||||||||||||||||
| Triangle Lake Bog State Nature Preserve | Portage | 62.16 | 1 ~ | none identified | |||||||||||||||
| Trillium Trails State Nature Preserve | Hamilton | 22.84 | none identified | ||||||||||||||||
| Tummonds State Nature Preserve | Portage | 85.42 | none identified | ||||||||||||||||
| W. Pearl King Prairie Savanna Nature Preserve | Madison | 20.02 | Permit | ||||||||||||||||
Wahkeena Memorial State Nature Preservesource records
ODNR guide row, as printed: Verify current visiting hours and access with the managing organization before relying on these guide hours. | Fairfield | 147.54 | 1.5 | none identified | |||||||||||||||
Walter A Tucker (Blacklick Woods) State Nature Preservesource records
ODNR guide row, as printed: | Fairfield | 55.19 | 1.5 ~ | none identified | |||||||||||||||
Warder-Perkins State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Hamilton | 25.48 | Permit | ||||||||||||||||
| Whipple State Nature Preserve | Adams | 538.89 | 2.1 | none identified | |||||||||||||||
White Pine Bog Forest State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Geauga | 386.08 | Permit | ||||||||||||||||
White’s Gulch State Nature Preservesource records
No row in ODNR's printed guide. | Jackson | 160.95 | none identified | ||||||||||||||||
William C McCoy State Nature Preservesource records
No row in ODNR's printed guide. ODNR permit table row: | Ashtabula | 220.17 | Permit | ||||||||||||||||
Woodland Fernleaf False Foxglove State Nature Preservesource records
No row in ODNR's printed guide. | Athens | 6.41 | none identified | ||||||||||||||||
| Zimmerman Prairie State Natural Area | Greene | 3.67 | none identified |
~ marks a guide row whose trail miles carry the guide's note: A portion of the trail system is accessible.
"None identified" and the "No whole-preserve permit identified" filter mean: No whole-preserve permit requirement identified in the sources we check; named-area or activity permits may still apply. Part and activity permits are shown in the Access column. The guide also says: Preserves not listed are either unimproved, or require a written permit to visit.
Rows without a page here carry their source records. Sources: ODNR GIS: ODNR Lands layer (nature preserves and natural areas), ODNR: Ohio State Nature Preserves & Natural Areas Guide (PDF) and ODNR: State Nature Preserves Access Permit.
Our take written by Nature Awed
ODNR's GIS lands layer maps 157 dedicated state nature preserves and natural areas across 61 counties. 104 of them have a visitor page on ohiodnr.gov, and 95 of those describe the preserve in enough detail for a page of its own here; the rest are rows in this table, linked to ODNR where a page exists.
44 rows match an entry in ODNR's access-permit table, 4 of them for a named part or activity, and 2 more have an ODNR page that says a permit is needed. Trail miles and the accessibility marker come from ODNR's printed preserve guide, which covers 90 of the rows. Acres are our sum of the mapped parcels, so they can differ from the acreage ODNR prints elsewhere.
Our description of the table above.