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Upcoming Events

DUI Demo Tour
Sun Sep 08
Great Lakes Wrecking Crew "Meet & Greet"
Sun Oct 20

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Quarry Map

Gilboa Quarry DUI Logo
Gilboa Quarry
3763 Old St. Rt. 224
Ottawa, OH 45875
Office: (419) 456-3300

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Gilboa Quarry Scuba Diving
The Midwest's Premier Dive Site Print E-mail

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Here is a link to the new fish habitat.

Gilboa Quarry - Aquatic Life (New Fish Habitat Spring 2012) from Michael Lynch.

Check out the What's New tab for the latest quarry news!

We have some new additions and more to follow.  May 2012, we added 1200 trout, 800 perch, 200 lbs of Golden Shiner minnows, and 2500 bullfrog tadpoles.  Stay tuned for what we will be adding next!!


January 2, 2013 until December 31, 2013

Gilboa Quarry is a 14+ acre limestone quarry, located in Northwest Ohio. There are wooded campgrounds encompassing over half the quarry's perimeter. Gilboa Quarry is a great location for diving and dive training. The quarry provides two distinct personalities: the shallow side at 5 - 65 ft provides great recreational enjoyment, while the deep side of the quarry with depths of 130 plus ft is suitable for technical training.
Gilboa Quarry
There are a multitude of items of interest for all divers. Whether it is our large training platforms, 15 - 130 plus ft depths, or our many sunken treasures such as the Grumman airplane and Sikorsky helicopter, there is certain to be something of interest for everyone.
Our aquatic life is second to none. Snorkeling for Paddlefish and on site camping or lodging for divers and their guests will round out your stay at Gilboa Quarry.
Gilboa Quarry provides a variety of amenities to meet your specific diving needs. Docks, benches, and underwater platforms for your convenience, be it open water certification dives, enjoying the underwater sites, or to keep your skills honed for your personal diving goals.
Breathing Gas is available on site up to 20,00cf of hyper-clean air is banked to provide for those peak periods when we all want to get wet. Be sure to check your visual and hydro dates on your cylinders prior to coming out to the quarry.Partial pressure nitrox blending is available for tanks that are O2 clean.
Whether it's a day trip or an entire weekend getaway Gilboa Quarry offers some great amenities not found at other recreational diving attractions. Gilboa Quarry offers plenty of camping space. Camping areas are conveniently accessible by gravel road allowing for easy drive up access to the quarries main sites.
Don't care to camp out? Gilboa Quarry has cottages and rooms available on site. Showers and heated dressing rooms are also available. This is one of the many reasons why Gilboa Quarry is The Midwest's Premier Dive Site.


Gilboa Quarry is a dive instructor's paradise. On the shallow side of the quarry suspended just 20 ft from the surface and 10 ft from the bottom are 90 ft of instructor's platforms. These platforms consist of 6 individual 10' x 20' suspended staging areas ideal for taking students safely through there open water checkout. Since several classes can be given at one time, there is no waiting. This, along with the great visibility, offers the student and instructor the perfect environment to perform everything from mask clearing to buddy breathing.

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