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IntermediateShore entry

Gilboa Quarry

Ohio, United StatesDirections
Open Water suggested8–43 m (25–140 ft) depthShore entry

Gilboa Quarry at a glance

Gilboa Quarry is an intermediate shore dive site in Ohio, United States with depths of 7.6–42.7 m (25–140 ft). Typically most favorable Sep · from 3 years of archive data. Divers commonly see Crappie, Bluegill, and Channel catfish. Check the latest conditions and entry details before you go.

Favorable window now· until 19:00 · sunset 18:39

Wind forecast for this hour · 15:00 · run 1 h ago
—

Tap a factor for its source and model point

Site hazards: Deep section (over 100 ft) with thermoclines and dark, cold water; overhead and entanglement hazards on submerged attractions; silting near platforms

Read the full hazards ↓

Dive windows this week

Lightest wind: Mon
Mon14:00–19:00 favorable

5 kn wind (5 kn wind)

Tue9:00–19:00 favorable

7 kn wind (7 kn wind)

Wed9:00–19:00 favorable

7 kn wind (7 kn wind)

Thu12:00–19:00 moderate

13 kn wind (13 kn wind)

Fri9:00–19:00 favorable

7 kn wind (7 kn wind)

Sat9:00–19:00 favorable

8 kn wind (8 kn wind)

Sun9:00–10:00 favorable, 10:00–19:00 moderate

7 kn wind (7 kn wind)

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wind forecasts. Numbers under each bar are daylight averages.

First light 7:31 · Sunrise 7:59 · Sunset 18:39 · some windows run past sunset

Source: Open-Meteo wind · updated 26 Oct, 13:25 GMT-4

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Gilboa Quarry

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.

Dived here today — did the forecast match?

What Divers Say

Known for: Crappie, Bluegill, Largemouth bass
Best time: Spring and fall for best visibility; weekdays for fewer classes

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.

  1. January, 71% of days have historically been favorable, wind has typically been 12 knots
  2. February, 60% of days have historically been favorable, wind has typically been 13 knots
  3. March, 55% of days have historically been favorable, wind has typically been 14 knots
  4. April, 54% of days have historically been favorable, wind has typically been 13 knots
  5. May, 80% of days have historically been favorable, wind has typically been 11 knots
  6. June, 81% of days have historically been favorable, wind has typically been 11 knots
  7. July, 84% of days have historically been favorable, wind has typically been 9 knots
  8. August, 90% of days have historically been favorable, wind has typically been 9 knots
  9. September, 93% of days have historically been favorable, wind has typically been 9 knots, historically most favorable
  10. October, 78% of days have historically been favorable, wind has typically been 11 knots
  11. November, 67% of days have historically been favorable, wind has typically been 12 knots
  12. December, 68% of days have historically been favorable, wind has typically been 12 knots

September has typically 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, by month

Recorded observations — evidence of past sightings, not a promise of what you’ll encounter.

Species seen here

Rough labels: “Commonly seen” usually means two or more recorded sightings near this site in public dive logs (GBIF), “Occasionally seen” one; “Seasonal” and “Rarely seen” come from dive-guide research. Not a measured rate.

  • Polyodon spathula recorded here May (1 record)

    most recent 2007

  • Salvelinus namaycush recorded here May (1 record)

    most recent 2007

Newest record here: 2007. Counts are occurrence records near this site from public biodiversity datasets (GBIF), grouped by calendar month across all sampled years. Sightings vary — past records are context, not a prediction.

Fills & rentals nearby

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated June 2026

Site details

Gilboa Quarry in Putnam County is widely regarded as the Midwest's premier inland dive site, a 14+ acre spring-fed former limestone quarry operated commercially for diving since 1990. Depths range from 25-foot training shelves to about 140 feet along sheer limestone walls, with sunken attractions including a Grumman airplane, a Sikorsky helicopter, school buses, boats and the 'Nemo's Garden' freshwater underwater biosphere. The quarry is famous for its resident five-foot paddlefish and visibility that averages 30-40 feet.

shorewallwreck

Deep section (over 100 ft) with thermoclines and dark, cold water; overhead and entanglement hazards on submerged attractions; silting near platforms

Reviews

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