Mark Gosling updated Photos.
Nov 26, 2025Dive Spot Guide•
Cosmeston
Flooded quarry dive with shallow rock piles and weed.
4/5
2 dives 1 diverPhoto from Mysterious Manatee
Booked freshwater quarry session with silty bottom, shallow structure and rain-sensitive visibility.
About Cosmeston
Cosmeston is a flooded quarry dive in a country-park setting that works best as a simple training or checkout site when visibility is holding up. Rock piles sit on a silty bottom, seasonal weed can thicken the route, and the whole place stays shallow enough for relaxed navigation. Plan for a booked session rather than a casual walk-in, because access needs notice and the fee is handled at the warden's office. Freshwater fish and eels are the main draw.
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Research + Early Community Signal At Cosmeston
Conservative research baseline blended with 2 dives by 1 diver.
VisibilityVisibility: 1m
AccessSimple entry
Aquatic LifeSome life
FacilitiesBasic facilities
Crowd / PopularityFew visitors
CurrentNo current
SurgeFlat calm
Where Is Cosmeston?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Cosmeston Planning Details
Depth range, seasonality, and planning context.
Reported Depth
0m - 9m
Depth Note
The quarry is shallow, with a reported maximum depth of about 9m.
Best Season
Year-round, with drier weather giving the best odds of workable visibility.
Typical Conditions
Silty bottom with rock piles and seasonal weed growth; visibility may be poor after heavy rain.
Safety & Access At Cosmeston
Hazards, restrictions, and access requirements.
Key Hazards
Low visibilityRestricted access
Safety Notes
Expect visibility to drop after rain and keep close to the rock piles so orientation stays simple.
Access Restrictions
Book 24 hours ahead and treat the dive as a managed entry rather than a casual walk-in.
Legal Notes
Follow the park's booking and payment rules before entering the water.
Local Intel For Cosmeston
Community notes to help plan your visit.
Scuba Diving
Best as a shallow quarry training dive with simple navigation around the rock piles.
Freediving
The shallow profile can be explored briefly, but the booking and visibility limits make scuba the clearer use case.
Snorkeling
Snorkeling is possible in very calm conditions, but poor visibility after rain can make it underwhelming.
Wildlife at Cosmeston
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Cosmeston
2 community dive logs and visit reports for this site.
Dive Spot Log Averages At Cosmeston
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility1m
Avg. Water Temp11°C
Avg. Max Depth8m
Activity
Avg. Bottom Time30 min
Total Logs2
Unique Divers1
