eaudouceplongee.fr · Operator
Regional dive-center page covering Lake Bourget support, training, and regular site use.
Dive Spot Guide•
Pierre à Bise
Pierre à Bise is a steep Lake Bourget wall dive from shore steps.
Scuba DivingFreedivingShoreAdvanced
DeepWall
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Brison-Saint-Innocent shore entry with a steep freshwater wall, variable visibility, and an advanced cold-water profile.
About Pierre à Bise
Pierre à Bise is a shore-entry Lake Bourget site in Brison-Saint-Innocent where steps lead to a steep freshwater wall and rocky pierrier that drop quickly away from the entry. The shallow shelf can be murky and slippery, so entry and exit deserve more attention than the descent itself. It is best treated as an advanced lake dive with cold-water gear, variable visibility, and seasonal closures around fish spawning.
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Research Estimate At Pierre à Bise
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 12m
AccessChallenging entry effort
Aquatic LifeAverage variety
FacilitiesLimited facilities
Crowd / PopularityModerate
CurrentNo current
SurgeFlat calm
Where Is Pierre à Bise?
This spotNearby spots
Community sourced coordinates.
Pierre à Bise Planning Details
Depth range, seasonality, and planning context.
Reported Depth
6m - 100m
Depth Note
The shore entry begins around 5-6m; the omblière drops to about 65m and the broader site is reported to around 100m.
Best Season
May through October, outside the late-autumn spawning closure.
Typical Conditions
Cold freshwater, a steep wall, variable visibility, and a dark deeper zone.
Safety & Access At Pierre à Bise
Hazards, restrictions, and access requirements.
Key Hazards
Low visibilityRestricted access
Safety Notes
Slippery steps, limited shallow visibility, and the steep drop are the main hazards; plan the exit before you commit.
Access Restrictions
Best for experienced divers; drysuit or cold-water experience is strongly preferred, and seasonal closures can apply around the spawning period.
Legal Notes
Pierre à Bise / Pointe de la Buffaz can be closed from 1 November to 31 December to protect spawning fish.
Local Intel For Pierre à Bise
Community notes to help plan your visit.
Scuba Diving
Steep drop-off with depths exceeding 60 m makes this better suited to experienced divers.
Freediving
Not a casual freedive site. The steep wall and cold freshwater make it a specialist experienced-diver spot rather than a breath-hold visit.
Snorkeling
Not a practical snorkel site. The shallow margin drops away quickly, so the useful terrain starts below the lake edge.
Pierre à Bise Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Pierre à Bise.
Current Snapshot
No data
🌥️Variable
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Sunset
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Surface / Entry
Wind No data · Tide No data
Sea State
Swell No data · Period unavailable
Visibility Outlook
Rain chance No data
Wind
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Swell
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Exposure Profile at Pierre à Bise
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Wildlife at Pierre à Bise
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Pierre à Bise
Community dive logs and visit reports for this site.
No Dive Logs Yet
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Dive Spot Log Averages At Pierre à Bise
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility12m
Activity
No dive activity logged yet.
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Pierre à Bise Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Pierre à Bise Guide - Sources and Updates
Last Updated
Research Sources
grand-lac.fr · Official
Prefectural closure for Pierre à Bise / Pointe de la Buffaz from 1 November to 31 December.
www.lac-du-bourget.fr · Community
Deep dive report with calm lake conditions, a 6m stop, and a 94m profile.
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