Swimming Holes in Illinois
12 natural swimming holes
Illinois has 12 natural swimming holes in our directory — lakes, creeks, waterfalls scattered from the backcountry to roadside favorites. Favorites include Bell Smith Springs, Illinois Beach State Park. Every listing includes location details, fees, reservation info, and safety notes where known. Conditions change with weather and seasons, so always verify before you go.
All Illinois swimming holes
Frequently asked questions
When is the best time to visit swimming holes in Illinois?
Most natural swimming holes in Illinois are at their best from late spring through early fall, when water levels are safe and temperatures are comfortable. Spring runoff can make rivers and creeks dangerously high — check local conditions.
Do Illinois swimming holes require reservations?
Some do — popular spots increasingly use timed entry or day-use permits. Check each listing's reservation field and the official park link before you go.
Are swimming holes in Illinois free?
Many are free, but state parks and popular preserves often charge a day-use or parking fee. Each listing shows reported fee info where known.
Are natural swimming holes in Illinois safe?
Natural water has real risks: no lifeguards, submerged rocks, strong currents, and cold water. Never dive headfirst, check depth, and supervise children closely.
⚠️ Verify before you go. Conditions, fees, reservations, and access can change — confirm details with the official link before visiting. Last verified: September 2026