Gilboa is between Ottawa and Findlay, OH on 224. Approx 1.5 hrs from anywhere on I69. We usually head in from Ft Wayne area. Gilboa is an old quarry converted to be "the premier dive site" in the midwest. Depths range from 15 to 135 ft. There is an airplane, helicopter, several vehicles, 7 training platforms, a ton of sunken boats, and what they call Tubes which are basically giants grain silos that you can swim through around 65ft. Vis is usually between 15 to 45 ft and temps range from 80 at the surface to 41 past 75 ft or so. 7mm westsuit or dry suit is standard. Vis depends on how many newbies are there to stir up the silt. Fishing and swimming are not allowed strictly to keep the vis high. There are docks for entering and exiting the water. Camping is permitted right on site, which is what we usually do. Air fills, showers, and restrooms also on site. Were going up the weekend of the 20th and 21st, and 27th and 28th if your interested. You can check them out at divegilboa.com