| Start Date and Time | Event Details | Location |
|
| End Day | Haunted Trail Weekend (Multi-Day Event) | Deam Lake State Recreation Area |
| End Day | A Haunting Good Time, Charlestown State Park (Multi-Day Event) | Charlestown State Park |
| End Time 4:00 PM | Falls Paleontology Camp, Falls of the Ohio State Park (Multi-Day Event) | Falls of the Ohio State Park |
| End Time 5:45 PM | Colors Of The Wind, Lieber SRA (Cagles Mill Lake) (Multi-Day Event) | Lieber State Recreation Area, Cagles Mill Lake |
| All Day | 10th Annual Trail of Scarecrows, Prophetstown State Park | Prophetstown State Park |
| All Day | 1800's Music Weekend, Spring Mill State Park | Spring Mill State Park |
| All Day | Fall Family Fun Days, Hardy Lake | Hardy Lake |
| All Day | Fall Fest, Prophetstown State Park | Prophetstown State Park |
| All Day | Fall Festival, Shakamak State Park | Shakamak State Park |
| All Day | Outdoor Education Classes | |
| All Day | Paint Chip Hike, Mounds State Park | Mounds State Park |
| All Day | Prairie Maze Open, Potato Creek State Park | Potato Creek State Park |
| All Day | Prophetstown Prairie Maze, Prophetstown State Park | Prophetstown State Park |
| All Day | PUBLIC NOTICE: Proposed Sand Removal Project at Kankakee Fish & Wildlife Area | Statewide |
| All Day | Spooktacular Weekend #2, Mounds SRA (Brookville Lake) | Brookville Lake |
| 7:00 AM - 4:00 PM | Nature Scavenger Hunt, Paynetown SRA (Monroe Lake) | Monroe Lake |
| 7:00 AM - 4:00 PM | PokéMonroe Hunt, Paynetown SRA (Monroe Lake) | Monroe Lake |
| 8:00 AM - 10:00 AM | Sunday Morning Bird Hike, Fort Harrison State Park | Fort Harrison State Park |
| 8:30 AM - 4:00 PM | Fall Scavenger Hunt, Raccoon SRA (Cecil M Harden Lake) | Cecil M. Harden Lake (Raccoon State Recreation Area) |
| 8:30 AM - 10:00 AM | Sunday Morning Bird Walk, Pokagon State Park | Pokagon State Park |
| 9:00 AM - 5:00 PM | Parke County Covered Bridge Festival, Raccoon SRA (Cecil M Harden Lake) | Cecil M. Harden Lake (Raccoon State Recreation Area)
Mansfield Roller Mill |
| 10:00 AM - 11:00 AM | (Cancelled) "Spooktacular" Hike, Ouabache State Park | Ouabache State Park |
| 10:00 AM - 10:40 AM | “Unwanted” Creatures, Quakertown SRA (Brookville Lake) | Brookville Lake |
| 10:00 AM - 11:00 AM | Bird Buffet, Indiana Dunes State Park | Indiana Dunes State Park |
| 10:00 AM - 10:40 AM | Going Batty!, Mounds SRA (Brookville Lake) | Brookville Lake |
| 10:00 AM - 10:20 AM | Help Feed The Birds, Potato Creek State Park | Potato Creek State Park |
| 10:00 AM - 10:30 AM | Help Feed the Birds, Turkey Run State Park | Turkey Run State Park |
| 10:00 AM - 12:00 PM | Nature Booth, Brown County State Park | Brown County State Park |
| 10:00 AM - 12:00 PM | Rose Island History Tour, Charlestown State Park | Charlestown State Park |
| 10:00 AM - 12:00 PM | Step Back In Time Hike, Clifty Falls State Park | Clifty Falls State Park |
| 10:00 AM - 10:40 AM | The Foods of Fall, Whitewater Memorial State Park | Whitewater Memorial State Park |
| 10:00 AM - 10:45 AM | Wake Up Forest!, Lieber SRA (Cagles Mill Lake) | Lieber State Recreation Area, Cagles Mill Lake |
| 10:00 AM - 10:10 AM | Winners List, Prophetstown State Park | Prophetstown State Park |
| 10:15 AM - 11:00 AM | Leaf Chalk Art Walk, Paynetown SRA (Monroe Lake) | Monroe Lake |
| 10:30 AM - 11:00 AM | Turtle Feeding at Canyon Inn, McCormick's Creek State Park | McCormick's Creek State Park |
| 11:00 AM - 1:00 PM | Fall Wreaths, Tippecanoe River State Park | Tippecanoe River State Park |
| 11:00 AM - 11:30 AM | Leaf Press, Spring Mill State Park | Spring Mill State Park |
| 11:00 AM - 11:30 AM | Moth vs. Bat, O'Bannon Woods State Park | O'Bannon Woods State Park |
| 11:30 AM - 12:00 PM | Autumn Sensory Jars, Paynetown SRA (Monroe Lake) | Monroe Lake |
| 12:00 PM - 1:00 PM | Fall Foray, Turkey Run State Park | Turkey Run State Park |
| 1:00 PM - 1:30 PM | Bird Nerd Series! THE BIRDS!, Mounds State Park | Mounds State Park |
| 1:00 PM - 2:00 PM | Cemetery Hike, Charlestown State Park | Charlestown State Park |
| 1:00 PM - 2:30 PM | Fallin' for Fall Hike, Fort Harrison State Park | Fort Harrison State Park |
| 1:00 PM - 2:00 PM | Fossil bed discovery hike, Falls of the Ohio State Park | Falls of the Ohio State Park |
| 1:00 PM - 2:00 PM | Halloween Craft Time, Tippecanoe River State Park | Tippecanoe River State Park |
| 1:00 PM - 2:00 PM | Wild Edibles Hike, Spring Mill State Park | Spring Mill State Park |
| 1:30 PM - 2:15 PM | Creepy Critters at the Visitor's Center, Prophetstown State Park | Prophetstown State Park |
| 2:00 PM - 2:45 PM | Amphibian Antics, Potato Creek State Park | Potato Creek State Park |
| 2:00 PM - 2:45 PM | Critter Feeding, McCormick's Creek State Park | McCormick's Creek State Park |
| 2:00 PM - 2:30 PM | Hellbender Happenings, Clifty Falls State Park | Clifty Falls State Park |
| 2:00 PM - 4:30 PM | Listening to Ouabache, Ouabache State Park | Ouabache State Park |
| 2:00 PM | Planetarium Star Show, Turkey Run State Park | Turkey Run State Park |
| 2:00 PM - 3:00 PM | Spooky Snakes, Indiana Dunes State Park | Indiana Dunes State Park |
| 2:00 PM - 2:30 PM | (Cancelled) Spooky Spiders, Ouabache State Park | Ouabache State Park |
| 3:00 PM - 4:00 PM | Halloween Craft, Charlestown State Park | Charlestown State Park |
| 3:00 PM - 4:00 PM | Lusk Home Tour, Turkey Run State Park | Turkey Run State Park |
| 3:00 PM - 4:00 PM | Spiders, Snakes, and Bats... OH MY!, Mounds State Park | Mounds State Park |
| 7:00 PM - 10:00 PM | Saw-Whet Owl Banding Demonstrations, Indiana Dunes National Park Visitor Center | See Event Details |