Flat Rock
Closed for the season. Typically opens late May and operates through early September. Reservations available via Recreation.gov for some sites; others are first-come, first-served. After-season camping may be available weather-dependent with no utilities or services.
Flood Watch issued October 9 at 1:15PM MDT until October 12 at 6:00PM MDT by NWS Pocatello ID
* WHAT...Flooding caused by excessive rainfall is possible. Storm total rainfall amounts of 1-2 inches are possible across the area with localized 3 inches possible in spots, especially in the higher terrain of the eastern highlands. * WHERE...Portions of central, eastern, south central, and southeast Idaho, including the following areas, in central Idaho, Sun Valley Region and Wood River Foothills. In eastern Idaho, Beaverhead - Lemhi Highlands, Big Hole Mountains, Centennial Mountains - Island Park and Teton Valley. In south central Idaho, Eastern Magic Valley and Shoshone/Lava Beds. In southeast Idaho, Arco/Mud Lake Desert, Bear Lake Valley, Bear River Range, Blackfoot Mountains, Caribou Range, Franklin/Eastern Oneida Region, Lower Snake River Plain, Marsh and Arbon Highlands, Raft River Region, Southern Hills/Albion Mountains and Upper Snake River Plain. * WHEN...From Saturday afternoon through Monday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - A prolonged period of rainfall is expected across eastern Idaho throughout the weekend which could lead to some flooding across parts of the advised area. An upper low moving into the Pacific Northwest will combine with tropical moisture from Tropical Cyclone Rachel to usher in a cooler, wetter weather pattern across eastern Idaho. - http://www.weather.gov/safety/flood
Weed Free Hay Order 04-2021-03
Prohibited by this order: Possessing, storing, or transporting non-pelletized hay, straw, or mulch in the Intermountain Region, unless it is certified as weed free by the state where the product originated.
Fireworks and Spark Arrestor Order 04-2021-01
Prohibited by this order: Possessing, discharging, or using any kind of firework or other pyrotechnic device. 36 CFR §261.52(t)Operating or using any internal or external combustion engine without a spark arresting device properly installed, maintained and in effective working order as described…
About
Flat Rock Campground is located in the Caribou-Targhee National Forest, 22 miles south of West Yellowstone, Montana and 30 miles north of Ashton, Idaho. Situated along the Henry's Fork of the Snake River at 6,400 feet elevation, the campground provides a mix of lodgepole pine shade and river access. Some sites offer views of the river. The campground has 37 single-family sites and 1 double-family site. Six sites feature 50-amp electric hookups. All sites include a picnic table, campfire ring, and tent pad. The campground can accommodate RVs up to 65 feet. Vault toilets, potable drinking water, and trash collection are provided. A campground host is on-site during the operating season. Showers and supplies are available across the highway at Macks Inn. The Henry's Fork provides excellent fly-fishing for rainbow and brook trout. The Big Springs National Recreation Water Trail offers a 3-hour float from Big Springs to Macks Inn through scenic wildlife habitat. Yellowstone National Park's west entrance is 22 miles north. Mesa Falls Scenic Byway is 11 miles south, and Harriman State Park is 13 miles south.
Directions
From West Yellowstone, Montana, take U.S. Highway 20 south for 22 miles. From Ashton, Idaho, take U.S. Highway 20 north for 30 miles. The campground entrance is 1/4 mile south of Macks Inn on the west side of the highway.
Amenities
| Water | Yes |
| Fires Allowed | Yes |
| Toilets | Yes |
| Dump Station | — |
| Wifi | — |
| Pets Allowed | — |
| Showers | No |
| Electric Hookups | Yes |
| Water Hookups | No |
| Sewer Hookups | No |
| Camp Store | No |
| Price | $25 - $62 |
Vehicle
| Max RV Length | 65ft |
| Max Trailer Length | 65ft |
| Big Rig Friendly | Yes |
| Pull Through Sites | No |
Contact
| Phone | +1 (208) 652-7442 |
Cell Service
| AT&T | Yes |
| Verizon | Yes |
| T-Mobile | Yes |
Availability
Photos
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