How deep is Bonne Terre Mine?

Bonne Terre Mine has a depth range of 12.2–18.3 metres (40–60 feet). Check the dive site page for current conditions and any depth-specific guidance before planning your dive.

Can beginners dive Bonne Terre Mine?

Bonne Terre Mine is rated as intermediate difficulty, which may not suit new divers. A Open Water (advanced Bear Trails require demonstrated skills) certification or equivalent is suggested. Consider your experience level, conditions, and local guidance before planning.

When is the best time to dive Bonne Terre Mine?

The best time to dive Bonne Terre Mine is typically Year-round; conditions are constant. Conditions vary, so check the latest reports and forecasts on the dive site page before your trip.

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IntermediateShore entry

Bonne Terre Mine

Missouri, United States

Open Water suggested12–18 m depthShore entry

Bonne Terre Mine at a glance

Bonne Terre Mine is a intermediate shore dive site in Missouri, United States with depths of 12.2–18.3 m (40–60 ft). Typically most favorable Aug · from 3 years of archive data. Check the latest conditions and entry details before you go.

Wind model · graded 4h ago

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Tap a factor for its source and model point

Site hazards: Overhead mine environment, cold 58 F water, unlit side passages, depth on advanced trails

Read the full hazards ↓

Dive windows this week

Best: Wed

Sun7:00–21:00

Mon7:00–21:00

Tue7:00–21:00

Wed7:00–21:00

Thu7:00–21:00

Fri7:00–21:00

Sat7:00–21:00

Favorable windowModerate window— no window

First light 5:31 · Sunrise 6:00 · Sunset 20:16

Source: Open-Meteo wind · graded 4h ago

Forecast only — always assess conditions on site.

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

What Divers Say

Best time: Year-round; conditions are constant

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

Jan90% 10 kn
Feb91% 10 kn
Mar73% 11 kn
Apr67% 11 kn
May92% 9 kn
Jun96% 8 kn
Jul96% 7 kn
Aug99% 7 kn
Sep97% 7 kn
Oct88% 9 kn
Nov88% 10 kn
Dec86% 10 kn

August hastypically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life recorded at this site

No recorded sightings data for this site yet. Species lists appear as GBIF records and diver reports accumulate.

Fills & rentals nearby

No dive shops mapped within 25 km. Know one? Add it to the map.

Site details

A flooded former lead mine in Bonne Terre, MO, holding a billion-gallon underground lake with around 100 ft visibility and a constant 58 F water temperature. Twenty-four numbered dive trails wind past pillars, ore carts, scaffolding and other mining artifacts; all dives are guided by staff dive guides with an assigned safety diver. New visitors must complete trails 1 and 2 before progressing, and advanced 'Bear Trail' dives venture into unlit sections for proven divers. Operated by West End Diving as a commercial dive resort.

cave

Overhead mine environment, cold 58 F water, unlit side passages, depth on advanced trails

Reviews

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