USDA Forest Service · Idaho
Thompson Flat
USDA Forest Service · Idaho, United States
- Sites
- 13
- Hookups
- 11 no hookups
- Season
- July 13 to September 30
- Max RV length
- 60 ft
- Group sites
- Yes
- Drinking water
- Yes
- Restrooms
- Yes
- Pets
- Yes
- Elevation
- 8,064 ft
- Dark sky
- Bortle class 1
- Cell coverage
- Verizon weak · T-Mobile good · AT&T good (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Access road
- THOMPSON FLAT C G (NFSR 70557) · native material · suitable for passenger cars
- Lake
- Sawtooth National Forest
- Nearest town
- BURLEY
- Address
- 2306 HILAND AVE, BURLEY, ID, 83318
- Phone
- 208-678-0430
- Activities
- Camping, Canoeing, Fishing, Hiking, Horseback Riding, Hunting, Mountain Biking, Wildlife Viewing
11 numbered sites are mapped one by one - open the site map to pick yours.
About
Overview
Thompson Flat Campground is located high in the Albion Mountain Range of southern Idaho, near the towns of Declo and Albion. Visitors enjoy the area for its abundant trails, alpine lakes and scenic beauty.
Recreation
The Twin Lakes Campground area is located just outside the campground and across the road. It offers picnic areas, horse corrals and access to a variety of trails.
Lake Cleveland is a two-mile drive from the campground, offering fishing, canoeing and trail opportunities. Several additional hiking, mountain biking, horse and off-road vehicle trails are on the mountain.
Facilities
The campground contains three group sites, which can accommodate from 40 to 64 people, respectively. All sites are equipped with large picnic tables and campfire rings with grills. There are four reservable single units and four double unit campsites as well as 17 additional single-family campsites that are available on a first-come, first-served basis, but the group sites must be reserved.
Accessible vault toilets are provided. A campground host is located on-site. Roads and parking spurs within the campground are gravel.
Natural Features
The campground is situated in a beautiful wildflower-filled meadow lined with tall pine and fir trees, on the eastern slope of Mount Harrison. It sits at an elevation of 8,400 feet.
Nearby Attractions
A visit up the road to the Mount Harrison Lookout offers interesting area information and breathtaking panoramic views of the valleys below.
Pomerelle Ski Area, just below Thompson Flat, offers lift-served hiking and mountain biking, scenic chairlift rides and a few dining options, generally on weekends.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 23° | 8° | -15° | 39° | 11 of 11 |
| February | 26° | 11° | -23° | 42° | 11 of 11 |
| March | 33° | 16° | 1° | 63° | 11 of 11 |
| April | 42° | 20° | 8° | 60° | 11 of 11 |
| May | 54° | 32° | 19° | 68° | 10 of 11 |
| June | 65° | 41° | 25° | 84° | 5 of 11 |
| July | 80° | 52° | 36° | 89° | 0 of 11 |
| August | 77° | 51° | 41° | 86° | 0 of 11 |
| September | 67° | 41° | 31° | 78° | 2 of 11 |
| October | 51° | 29° | 12° | 67° | 10 of 10 |
| November | 40° | 20° | -8° | 54° | 10 of 10 |
| December | 26° | 12° | -12° | 47° | 10 of 10 |
Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.
Nearby campgrounds
- Twin Lakes Campground (Sawtooth) · USDA Forest Service · 0 mi · 4 sites
- Lake Cleveland - East Side · USDA Forest Service · 1 mi · 8 sites
- Lake Cleveland Campground - West Side · USDA Forest Service · 1 mi · 4 sites
- Bennett Springs Campground · USDA Forest Service · 1 mi
- Lake Cleveland Campground - West Side · USDA Forest Service · 1 mi
All public campgrounds in Idaho · Every state and province · Facts read from the operator 2026-02-25. Confirm fees, rules and current status with the operator before you go.