Closure notice and historical dive-site listing.
Millbrook Quarry is a closed freshwater training quarry in Virginia.
Millbrook Quarry is a closed freshwater training quarry in Virginia.
Millbrook Quarry, also known as Lake Millbrook, is a closed freshwater quarry site in Haymarket, Virginia. It was historically used for training and checkout dives from both beaches, with a shallow side for beginner work and a deeper artifact side for more advanced exploration. Since public diving was reported closed in 2020, the useful planning frame is historical rather than active.
Depth range, seasonality, and planning context.
Reported Depth
3m - 30m
Depth Note
One training reef area was shallow enough for checkout dives, while the deeper feature side reached the anchor at roughly 31 m.
Best Season
Historically, spring through fall offered the most practical quarry diving.
Typical Conditions
Freshwater quarry conditions with low visibility and a controlled training environment.
Site conditions, restrictions, and access requirements.
Site Conditions
Safety Notes
Do not plan a dive here without confirming access status with the land manager or an active operator.
Access Restrictions
Closed to public diving.
Legal Notes
The quarry was reported closed as of March 2020; verify any reopening with the current land manager before planning.
Community notes to help plan your visit.
Scuba Diving
Historically used for training dives and deeper quarry exploration.
Freediving
Historical freedive use is not well supported; the site is better treated as a scuba quarry.
Snorkeling
Not a primary snorkel site; the useful planning frame is historical quarry training rather than surface recreation.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Closure notice and historical dive-site listing.
Closure announcement from the quarry page.
Historical dive-club event with training and facilities detail.
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