NBM Dive Site Resource
Lake Ontario National Marine Sanctuary
Eastern Lake Ontario, New York, United States
Official protected Great Lakes area in Lake Ontario, grouping source-checked wrecks and other dive locations from the managing authority inventory.
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Historic 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.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
65 officially inventoried dive locations are linked below.
Dive-area module
Area coverage
This profile represents a preserve, sanctuary, park, or regional dive area rather than one underwater site. The sourced inventory below links to the named sites documented within its boundaries.
Official inventory
Dive sites within this area
These named sites come from an authoritative preserve, sanctuary, park, or historical inventory. Their inclusion does not mean every connected boat visits them.
TECHNICAL DIVE ONLY — NOAA identifies Adiramled as a largely intact Lake Ontario steambarge beyond recreational scuba limits but within technical-diving range.
Open dive-site profile →ShipwreckAmerican (Ex-Onondaga)Lake Ontario, New York · Depth not yet supplied in NOAA overviewNOAA-documented historic shipwreck within Lake Ontario National Marine Sanctuary, open for responsible public diving and snorkeling.
Open dive-site profile →ShipwreckAriadneLake Ontario, New York · Depth not yet supplied in NOAA overviewNOAA-documented historic shipwreck within Lake Ontario National Marine Sanctuary, open for responsible public diving and snorkeling.
Open dive-site profile →ShipwreckAtlasLake Ontario, New York · More than 300 ft / 91 m; NOAA: extreme technical limits or outside diver limitsEXTREME TECHNICAL DIVE / POSSIBLY OUTSIDE PRACTICAL DIVER LIMITS — Atlas rests in more than 300 ft / 91 m of Lake Ontario water. NOAA classifies access at the extreme technical boundary or outside diver limits.
Open dive-site profile →ShipwreckBansheeLake Ontario, New York · Depth not yet supplied in NOAA overviewNOAA-documented historic shipwreck within Lake Ontario National Marine Sanctuary, open for responsible public diving and snorkeling.
Open dive-site profile →ShipwreckBay StateLake Ontario, New York · Approximately 200 ft / 61 mTECHNICAL DIVE ONLY — Bay State is a Lake Ontario wooden screw steamer in approximately 200 ft / 61 m of water. NOAA classifies the site as technical diving; it requires appropriate technical and decompression training.
Open dive-site profile →Before you arrive
Access notes
Use the linked site profiles for depth, access, experience, and hazard information.
Plan within your training
Conditions and hazards
Cold water, changing Great Lakes weather, visibility, currents, boat traffic, and site-specific depth or overhead hazards.
Connected reporting
News mentioning Lake Ontario National Marine Sanctuary
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.