Can you reserve a site at Dimond O?

Yes, Dimond O is reservable through Recreation.gov.

What is the maximum RV length at Dimond O?

48 ft. That is the longest vehicle the sites here are recorded as taking; individual sites may be shorter.

Are pets allowed at Dimond O?

Yes, pets are allowed at Dimond O.

Are campfires allowed at Dimond O?

Campfires are allowed at Dimond O. Check for a current fire restriction before you go.

Dimond O, California — 26 sites, fees and cancellation alerts

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.

Contact Info

For facility specific information, please call (801) 226-3564.

Nearby Attractions

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

The facts

26 bookable sites
Vehicles up to 48 ft
Up to 12 people per site
Loops: Lower, River

Site types

22 Standard Nonelectric
4 Tent Only Nonelectric

Amenities

Campfires allowed
Fire pits
Picnic tables
Shade
Pets allowed

Not recorded upstream: electric hookups, water hookups, sewer hookups, grills.

Book on Recreation.gov

26 campsites at Dimond O

Site	Loop	Type	Entry	Surface	Water	Max rig	People
005	Lower	Tent Only Nonelectric	Back In	Paved	Riverfront	—	6	🐾
006	Lower	Standard Nonelectric	Back In	Paved	Riverfront	22 ft	6	🐾
007	Lower	Standard Nonelectric	Back In	Paved	Riverfront	36 ft	6	🐾
008	Lower	Tent Only Nonelectric	Pull Through	Paved	Riverfront	—	6	🐾
009	Lower	Standard Nonelectric	Back In	Paved	Riverfront	22 ft	6	🐾
030	Lower	Standard Nonelectric	Back In	Paved	Riverfront	40 ft	6	🐾
031	Lower	Standard Nonelectric	Back In	Paved	Riverfront	38 ft	6	🐾
032	Lower	Standard Nonelectric	Back In	Paved	Riverfront	38 ft	6	🐾
033	Lower	Standard Nonelectric	Back In	Paved	Riverfront	40 ft	6	🐾
038	Lower	Tent Only Nonelectric	Back In	Paved	Riverfront	—	6	🐾
34/35	Lower	Standard Nonelectric	Back In	Paved	Riverfront	40 ft	12	🐾
013	River	Standard Nonelectric	Back In	Paved	Riverfront	40 ft	6	🐾
014	River	Standard Nonelectric	Back In	Paved	Riverfront	40 ft	6	🐾
015	River	Standard Nonelectric	Back In	Paved	Riverfront	28 ft	6	🐾
016	River	Standard Nonelectric	Back In	Paved	Riverfront	40 ft	6	🐾
017	River	Standard Nonelectric	Back In	Paved	Riverfront	44 ft	6	🐾
018	River	Standard Nonelectric	Back In	Paved	Riverfront	40 ft	6	🐾
019	River	Standard Nonelectric	Back In	Paved	Riverfront	36 ft	6	🐾
022	River	Standard Nonelectric	Back In	Paved	Riverfront	25 ft	6	🐾
023	River	Standard Nonelectric	Back In	Paved	Riverfront	40 ft	6	🐾
026	River	Standard Nonelectric	Back In	Paved	Riverfront	48 ft	6	🐾
027	River	Tent Only Nonelectric	Pull Through	Paved	Riverfront	—	6	🐾
028	River	Standard Nonelectric	Back In	Paved	Riverfront	40 ft	6	🐾
029	River	Standard Nonelectric	Back In	Paved	Riverfront	40 ft	6	🐾
20/21	River	Standard Nonelectric	Back In	Paved	Riverfront	36 ft	12	🐾
24/25	River	Standard Nonelectric	Back In	Paved	Riverfront	48 ft	12	🐾

Getting there

From the Groveland District Office, head east 15 miles on Highway 120, then turn left on Evergreen Road and travel 4 miles. The campground is located on the left.

37.82500, -119.86111 · 37°49'30.0"N 119°51'40.0"W

Directions (Google Maps) · Directions (Apple Maps)

Typical weather

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
High °F	—	—	—	—	—	—	—	—	—	—	—	—
Low °F	—	—	—	—	—	—	—	—	—	—	—	—
Precip in	6.4	5.9	5.2	3.4	2.1	0.6	0.3	0.1	0.4	2.2	3.3	5.5

1991–2020 averages from the nearest NOAA station, 4.2 mi away — not measured at the facility itself, and elevation can make a real difference over that distance.

Map

Common questions about Dimond O

Can you reserve a site at Dimond O?: Yes, Dimond O is reservable through Recreation.gov.
How many campsites does Dimond O have?: 26 sites.
What is the maximum RV length at Dimond O?: 48 ft. That is the longest vehicle the sites here are recorded as taking; individual sites may be shorter.
Are pets allowed at Dimond O?: Yes, pets are allowed at Dimond O.
Are campfires allowed at Dimond O?: Campfires are allowed at Dimond O. Check for a current fire restriction before you go.

Camping near Dimond O

Hodgdon Meadow Campground 1.8 mi · Campground · we watch it
Crane Flat Campground 4.3 mi · Campground · we watch it
Sweetwater (Stanislaus National Forest) 7.9 mi · Campground · we watch it
Tamarack Flat Campground 8.5 mi · Campground · we watch it
Carlon Day Use Area 0.8 mi · Facility
Big Oak Flat Information Station 1.9 mi · Visitor Center
Middle Fork Day Use Area 2.3 mi · Facility
Dimond O Campground 2.7 mi · Campground
Rainbow Pool Day Use Area 8.4 mi · Facility
Lumsden Bridge Campground 9.4 mi · Campground
Rim of the World Vista 9.7 mi · Facility
South Fork Campground 10.1 mi · Campground

Contact

Phone 209-379-2258
Email Help.Stanislaus.Groveland@AmericanLL.com
Book Recreation.gov

Recreation.gov last updated this record on 2026-07-15.

Dimond O