Quarry swimming holes in Indiana

Where the quarry swimming is in Indiana

The limestone belt around Bloomington holds the famous quarries; Hoosier National Forest and the southern hill country hold the creeks and reservoir beaches.

In this directory, Bloomington Area Quarries and St. Paul Quarry Swimming Spots are among the quarry spots we document in Indiana. The full list below reaches Bloomington, Indianapolis, and St. Paul.

Flooded limestone quarries are strikingly clear and very deep; lakes are warm and turbid by August.

Reading conditions before you go

Clarity is the appeal: with no inflow carrying silt, quarry water is often the clearest freshwater in the state. That same lack of flow means it stratifies hard.

The temperature difference between the surface and ten feet down can be dramatic. Diving through the thermocline is a common trigger for cold-water shock and cramping.

Legal status is the first thing to check. Most quarries are private property with real enforcement, and the permitted ones — such as the supervised dive parks — have posted hours, fees, and rules.

In Indiana, the Indiana Department of Environmental Management publishes the water-quality and algal-bloom advisories that apply to these waters. Check them alongside the live gauge data rather than instead of it.

Quarry safety in Indiana

Quarry walls are vertical or undercut, so there is often no shallow exit anywhere along the perimeter. A swimmer who tires has nowhere to stand.

Submerged equipment, cable, rebar, and cut ledges are routinely left behind when a quarry floods. Never dive head-first into water you have not surveyed.

Quarries have a disproportionate fatality record relative to how many people swim in them. Prefer documented, permitted sites over fenced pits.

Most Bloomington-area quarries are posted private property with real trespassing enforcement and a long fatality record. Quarry water stratifies into a warm surface layer over a shockingly cold deep layer, and submerged equipment and vertical walls make rescue difficult. Use the permitted, supervised sites.

Cold water deserves more respect than most swimmers give it. The National Weather Service notes that cold shock can be as severe at 50-60°F as at 35°F, and that the involuntary gasp reflex can be triggered by water as warm as 77°F — which is why entering slowly matters even on a hot day.

When to go

Indiana swims june through early september, with the most reliable water july to august. Warm afternoons in late May and mid-September are workable at quarries and lakes.

Quarry surface water warms through July and August, but the deep layer stays cold all year.

2 of these listings carry their own best-time note from the land manager or from reader reports — open them for the specifics rather than relying on the state-wide window alone.

What to bring: A wetsuit top if you plan to go deep, plus a tow float — visibility from the rim is poor.