Dive-site story
Situated near South Beloit on the Illinois-Wisconsin border, Pearl Lake is a spring-fed sand quarry that serves as a staple training ground for upper Midwest divers. The bottom features a network of navigation lines linking submerged attractions placed for navigation practice and exploration. Underwater features include sunken boats, a twin-engine aircraft, and training platforms set at varying levels.
Submerged twin-engine airplane resting upright on the sandy bottom
Network of guideline trails connecting training platforms and artificial features
Abundant freshwater fish congregating around sunken vessels and structures
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Late spring through early autumn offers warmer surface temperatures and open dive shop facilities on site.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Largemouth BassMicropterus salmoides | Common | ||||||||||||
| Channel CatfishIctalurus punctatus | Common | ||||||||||||
| WalleyeSander vitreus | Seasonal | ||||||||||||
| Yellow PerchPerca flavescens | Common | ||||||||||||
| Painted TurtleChrysemys picta | Seasonal |
Marine forecast
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