Dimond O is a national park campground at Stanislaus National Forest in Tuolumne County, California. Reservations are managed through Recreation.gov. When a booked site here is cancelled it can vanish within minutes, so Campsite Tonight monitors it 24/7 and auto-adds the opening to your Recreation.gov cart before anyone else.
Dimond O is in very high demand — sites here routinely sell out well in advance. Cancellations are often the best way in, which is exactly what Campsite Tonight watches for.
The campground accommodates RVs and trailers up to 48 ft. Campers rate it 4.6/5 across 206 reviews.
Other campgrounds at Stanislaus National Forest include Sweetwater (Stanislaus National Forest), Lumsden Bridge Campground and Lost Claim.
Total reservations in April — 2023: 56 · 2024: 71 · 2025: 68
Address
Groveland, California
Coordinates
37.8250, -119.8611
Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open.
Yosemite National Park
Yosemite National Park
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Stanislaus National Forest
Yosemite National Park
Stanislaus National Forest
Stanislaus National Forest
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