Thompson Flat
FSU.S. Forest Service — BURLEY · Idaho · Sawtooth National Forest
| Agency | FSU.S. Forest Service |
|---|---|
| Area | Sawtooth National Forest |
| Location | BURLEY · Idaho · Sawtooth National Forest · 42.32472, -113.62361 · Map |
| Sites | 11 public sites counted from the federal listing — 8 standard nonelectric; 3 group standard nonelectric |
| Getting a site | Reservable — the federal listing marks this campground as taking reservations. Some sites or seasons may still be first-come; the listing’s own words are below. |
| Hookups | Electric at 0 of 11 sites Water hookups at 0 of 11 sites Sewer hookups at 0 of 11 sites Full hookups (all three at one site) at 0 of 11 sites Counted site by site from affirmative reports in the federal record. A site with no report is not counted either way. |
| Max RV length | Longest reported site fits 60 ft Sites that fit at least — 25 ft: 13 sites · 30 ft: 13 sites · 35 ft: 13 sites · 40 ft: 13 sites |
| Months open | Not in federal data — the federal listing does not publish a season for this campground. Check the official description below or Recreation.gov. |
| Fees | Not reported — the federal listing carries no fee description for this campground. |
| Check-in / out | In 2:00 PM · Out 12:00 PM (most common in the listing) |
| Pets | Allowed at 13 sites, as reported |
| Accessible sites | 13 marked accessible in the listing |
| Accessibility | N |
| Phone | 208-678-0430 |
Check availability & book on Recreation.gov →
This site takes no reservations and shows no live availability. Source: Recreation.gov (RIDB export pulled November 5, 2026); this listing was last updated in the federal record on 2026-02-25.
From the official listing
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.
Directions, from the listing
From Interstate 84, take exit 216 and follow State Highway 77 south for approximately 18 miles, through the towns of Declo and Albion, to Howell Canyon Road. Turn west at the Pomerelle Ski Area sign and drive seven miles up the canyon on Howell Canyon Road. The road is steep and winding, watch for the campground entrance sign on the right.
Nearest federal campgrounds
0 mi straight-line · IdahoFSU.S. Forest ServiceLake Cleveland - East Side
1 mi straight-line · Burley IdahoFSU.S. Forest ServiceLake Cleveland Campground - West Side
1 mi straight-line · IdahoFSU.S. Forest ServiceLake Cleveland Campground - West Side
1 mi straight-line · IdahoFSU.S. Forest ServiceIndependence Lakes Campground
8 mi straight-line · Idaho
Trip Card — Thompson Flat
BURLEY · Idaho · Sawtooth National Forest
| Agency | FS · U.S. Forest Service |
|---|---|
| Location | BURLEY · Idaho · Sawtooth National Forest |
| Fees | Not reported in the federal data |
| Getting a site | Reservable |
| Hookups | None reported |
| Max RV | Up to 60 ft |
| Months open | Not in federal data |
| Sites | 11 sites |
Book: recreation.gov/camping/campgrounds/234192 · Source: Recreation.gov, pulled November 5, 2026. Facility details come from federal recreation data and may be out of date — this site takes no reservations and shows no live availability; confirm details and book through Recreation.gov or the managing agency.