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A gravel road curving into a high mountain valley at first light, the peaks catching the sun.

Forest Service campground

Dimond O

Forest Service campground in Stanislaus National Forest, Tuolumne County, California. 4,706 feet.

Reserve on Recreation.gov
Managed by
Forest Service Stanislaus National Forest
Elevation
4,706 ft USGS elevation model, at the mapped point
Sites
26 22 standard non-electric, 4 tent only non-electric
Longest rig
48 ft The longest vehicle any site is listed for
Hookups
None listed
Reservations
Recreation.gov
County
Tuolumne County

Overview

Dimond O is ideally located closest to Yosemite National Park's Big Oak Flat entrance and Hetch Hetchy. It's nestled near the banks of the scenic Middle Fork Toulumne River, where warm summer days can be spent wading and fly fishing in the refreshing waters.

Recreation

Nearby trails include the Carlon Falls Trail near the Carlon Day Use Area, and Yosemite National Park trails accessible from Hetch Hetchy.

The Middle Fork Toulumne River is a popular spot for swimming, wading and rainbow trout fishing.

Facilities

The campground offers single and double-family sites, many of which are accessible. Picnic tables and campfire rings are provided, as are accessible vault toilets and drinking water. Roads and parking spurs are paved. Firewood is available for a fee.

Natural Features

Some sites overlook the river and others are tucked among cedar and ponderosa pine trees. The Tuolumne River runs for about 150 miles from the central Sierra Nevada to the San Joaquin River.

Nearby Attractions

Take a scenic drive through Yosemite to explore its legendary landscapes.

The description, directions and fees are the Forest Service’s own words, from its record on Recreation.gov.

What people do here

  • biking
  • boating
  • camping
  • canoeing
  • climbing
  • fishing
  • hiking
  • rock climbing

The land around Dimond O

The ringed pin is this campground; the others are its nearest neighbours. Switch on forest roads or BLM routes to see the way in.

Map layers

Layers
Base map
Legend

Federal land, by managing agency

  • Bureau of Land Management (BLM)
  • US Forest Service (USFS)
  • National Park Service (NPS)
  • US Fish and Wildlife (USFW)
  • Bureau of Reclamation (USBR)
  • Department Of Defense (DOD)
  • Bureau of Indian Affairs (BIA)
  • Other Federal
  • State
  • Local
  • Alaska Native Lands (Patented or Interim Conveyed)
  • Alaska Native Allotment

Federal campgrounds, by agency

  • Forest Service
  • Bureau of Land Management
  • National Park Service
  • Army Corps of Engineers
  • Reclamation, Fish and Wildlife and others

State and local land (USGS PAD-US)

  • State land
  • County and city land
  • Regional agency or district
  • Land trust or conservancy

Gaps with no tint inside public land are private parcels, often old mining claims and homesteads. They are not open to the public.

Dashed clay lines on the base map are unpaved tracks from OpenStreetMap. They show what exists on the ground, not what is legal to drive.

Select any point to see who manages the land.

Boundaries are approximate and land status changes. This map is a planning aid, not a survey or a statement of access. Confirm routes, closures and camping rules with the managing office.

Nearest campgrounds

Camping near

Source: Recreation Information Database (Recreation.gov), record updated July 15, 2026. Elevation from the USGS 3D Elevation Program. Seasons, fees, water and fire rules change; the managing office has the final word.

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