NBM Dive Site Resource
Hyde's Quarry
Westminster, Maryland, United States
A former Maryland training quarry closed to public diving in July 2018 after invasive zebra and quagga mussels were confirmed; it remains listed to prevent outdated access assumptions.
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.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
Historically served Maryland divers as a controlled freshwater training quarry with submerged training objects.
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
- Closed since July 7, 2018; no reopening was located in the 2026 official-source audit.
- Submerged attractions
- Historically served Maryland divers as a controlled freshwater training quarry with submerged training objects.
- Onsite dive services
- No public scuba facilities; former operations ended with the closure.
- Surface facilities
- No public scuba facilities; former operations ended with the closure.
Before you arrive
Access notes
Treat all access as prohibited unless Carroll County or Maryland DNR publishes an explicit reopening. Decontamination requirements would be essential because invasive mussels triggered the closure.
Plan within your training
Conditions and hazards
Unauthorized access, invasive-species transfer, cold water, thermocline, low visibility, quarry walls, submerged objects, entanglement and absence of active dive support.
At the site
Facilities and support
No public scuba facilities; former operations ended with the closure.
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.