bluefootdiving.com · Dive Operator
Regional dive operator page describing Bonnie Castle as an easy shore dive and noting visibility range.
Dive Spot Guide•
Bonnie Castle
Bonnie Castle: shore-access river training dive park
Scuba DivingShoreBeginner
WallWreck
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Bonnie Castle is a shore-entry resort site with line-guided routes, training platforms, and seasonal visibility swings.
About Bonnie Castle
Bonnie Castle is a shore-access freshwater dive park on the St. Lawrence River in Alexandria Bay, built around a wall, line-guided routes, and training platforms that make it easy to stage a river dive. It suits newer scuba divers, but the site still rewards steady buoyancy, route awareness, and timing your visit for the better visibility season.
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Research Estimate At Bonnie Castle
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 9m
AccessSimple entry
Aquatic LifeAverage variety
FacilitiesGood facilities
CurrentLight current
SurgeFlat calm
Where Is Bonnie Castle?
This spotNearby spots
Community sourced coordinates.
Bonnie Castle Planning Details
Depth range, seasonality, and planning context.
Reported Depth
9.1m - 19.8m
Depth Note
Platforms are at 30 ft, and the maximum depth is 65 ft when following the guide lines to the sunken car or boat.
Best Season
Late spring through fall. Winter is for cold-water or ice-trained teams.
Typical Conditions
Freshwater river conditions with a line-guided route, seasonal temperature swings, and visibility that improves in the warmer months.
Safety & Access At Bonnie Castle
Hazards, restrictions, and access requirements.
Key Hazards
Boat trafficEntanglement risk
Safety Notes
Follow the guide lines to navigate between the wall, platforms, and deeper attractions, and plan a safety stop near the shallow area with rocks.
Access Restrictions
Plan for resort-property access and a dive-park use fee; check in before entering.
Legal Notes
Use the designated shore-entry and line systems, and follow resort access rules plus local boating requirements.
Local Intel For Bonnie Castle
Community notes to help plan your visit.
Scuba Diving
The park is built for scuba training, with suspended platforms, line navigation, and deeper route options that make it useful for new and experienced divers alike.
Freediving
Not the primary use case. The site is better suited to scuba than casual freediving.
Snorkeling
Snorkel use is limited to the shallowest edges; most of the useful route is set up for scuba.
Bonnie Castle Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Bonnie Castle.
Current Snapshot
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🌥️Variable
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Wind No data · Tide No data
Sea State
Swell No data · Period unavailable
Visibility Outlook
Rain chance No data
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Exposure Profile at Bonnie Castle
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Wildlife at Bonnie Castle
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Bonnie Castle
Community dive logs and visit reports for this site.
No Dive Logs Yet
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Dive Spot Log Averages At Bonnie Castle
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility9m
Activity
No dive activity logged yet.
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Bonnie Castle Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Bonnie Castle Guide - Sources and Updates
Last Updated
Research Sources
bluenorthscuba.ca · Dive Operator
Shore-dive page with species highlights, line-system layout, and fee details.
bonniecastle.com · Official Operator
Dive-park page with shore entry, platforms, and seasonal visibility details.
visit1000islands.com · Tourism
Tourism listing for resort and marina facilities at Alexandria Bay.
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