NBM Dive Site Resource
Pearl Lake Beach — Scuba Diving
South Beloit, Illinois, United States
A spring-fed former sand quarry with a managed seasonal scuba program, training platforms and intentionally placed dive attractions.
Save this dive site to your free member profile.
Quarry Picture Placeholder
Aquatic life at this dive site
What divers may encounter
Three reviewed connections are featured here. Sightings vary by season, conditions, and chance, so they are never guaranteed.
Aquatic life research in progress
NBM is reviewing a likely local species for this position.
Aquatic life research in progress
NBM is reviewing a likely local species for this position.
Aquatic life research in progress
NBM is reviewing a likely local species for this position.
Site media
Photographs
Three views rotate from the published gallery on each visit.
Contributor media
Dive videos
Three featured video positions are reserved on every profile.Published reference location
Location map
The marker shows the public coordinates associated with this profile. Confirm current access, moorings, and departure details before the dive.Map data © OpenStreetMap contributors
Recent field observations
Diver-reported temperatures
Automatically checked observations from dives during the past 14 days. Three reports are visible at a time; scroll for more.A report that passes the automatic checks will appear here with the dive date, diver’s display name, and temperatures at each depth.
Reports are automatically checked for plausible dates, depths, and temperatures. They are observations, not forecasts; confirm conditions before diving.
Why divers know this place
Highlights
Clear spring-fed quarry water, multiple dive sites and training platforms.
Quarry-only module
Quarry layout and services
This section appears only for quarries and mines, with the practical details divers need for entries, training areas, submerged features, surface support, and current operations.
- Current operating status
- The official 2026 season runs from April 15 through October 11.
- Training platforms
- Clear spring-fed quarry water, multiple dive sites and training platforms.
- Submerged attractions
- Clear spring-fed quarry water, multiple dive sites and training platforms.
- Onsite dive services
- Office check-in, pavilions, campground facilities and showers; no tank fills or equipment rental.
- Surface facilities
- Office check-in, pavilions, campground facilities and showers; no tank fills or equipment rental.
Before you arrive
Access notes
Check the current season, construction restrictions, gate procedure, waiver and buddy rules before travel.
Plan within your training
Conditions and hazards
Cold water, thermoclines, changing visibility, submerged attractions, entanglement and construction exclusion areas.
At the site
Facilities and support
Office check-in, pavilions, campground facilities and showers; no tank fills or equipment rental.
Independent resource notice
This record is a starting point for independent verification. Access, closures, moorings, weather, currents, depth, visibility, operator availability, and site conditions can change without notice. Confirm current information with the responsible operator, property owner, managing authority, or another qualified local source before planning or attempting a dive.