Headwaters Campground At Flagg Ranch
The campground is currently closed for the winter season and reopens in June 2026. Reservations are available through Recreation.gov on a 6-month rolling basis. A multi-year construction project to upgrade utility infrastructure is ongoing during summer months, with noise-producing activities limited to 9 AM to 6 PM and reduced laundry availability.
Flood Watch issued July 21 at 12:59PM MDT until July 23 at 6:00AM MDT by NWS Riverton WY
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming, including the following areas, in central Wyoming, Casper Mountain, Green Mountains and Rattlesnake Range, Lander Foothills, Natrona County Lower Elevations, Owl Creek and Bridger Mountains, Southwest Bighorn Basin, Upper Wind River Basin, Wind River Basin, Wind River Mountains East and Wind River Mountains West. In north central Wyoming, Bighorn Mountains Southeast, Bighorn Mountains West, Northeast Johnson County, Southeast Bighorn Basin and Southeast Johnson County. In northwest Wyoming, Absaroka Mountains, Cody Foothills, Jackson Hole, North Bighorn Basin, Teton and Gros Ventre Mountains and Yellowstone National Park. In south central Wyoming, East Sweetwater County, Flaming Gorge and Rock Springs and Green River. In southwest Wyoming, South Lincoln County. In west central Wyoming, Salt River and Wyoming Ranges, Star Valley, Upper Green River Basin and Upper Green River Basin Foothills. * WHEN...Until late Wednesday night. The most likely period of possible flooding is Wednesday afternoon through Wednesday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Slow moving showers and thunderstorms and abnormally high moisture in the air can bring locally heavy rainfall that could lead to flooding. - http://www.weather.gov/safety/flood
From Recreation.gov
**Summer Update: Enhancing our campground for you** Our campground is getting an upgrade! A significant, multi-year construction project to enhance utility infrastructure will be occurring within the campground this summer. To minimize disruption to the campground experience, noise creating construction activities will be limited to 9am to 6pm. Please note that our laundry facilities will also have reduced availability during this project. We appreciate your patience as we improve your experience for seasons to come and cannot wait to welcome you this summer!
About
Headwaters Campground at Flagg Ranch occupies a prime location in the John D. Rockefeller, Jr. Memorial Parkway, the narrow corridor connecting Yellowstone and Grand Teton National Parks. Situated along the upper Snake River amid rolling conifer forests and wildflower meadows, the campground provides easy access to both parks. Polecat Creek runs nearby, offering opportunities to spot moose, elk, beaver, and bears. The Snake River provides excellent fishing for cutthroat trout, brook trout, and whitefish. The campground features 34 tent sites with bear-proof food storage lockers, 97 full-hookup RV sites with pull-through access and 20/30/50-amp electric, water, and sewer connections, plus 40 rustic camper cabins with bunk beds but no electricity or private restrooms. All sites include a picnic table and fire pit with metal grate. Facilities include flush toilets, complimentary showers, and coin-operated laundry. The on-site Headwaters Lodge offers a convenience store, gift shop, propane sales, and Sheffield's Restaurant and Saloon. Nearby attractions include Huckleberry Hot Springs (2.5-mile loop trail), Flagg Canyon Trail along the Snake River, and scenic drives through Grand Teton. Yellowstone's south entrance is just two miles north. Cellular and WiFi service is limited throughout the area.
Directions
From Yellowstone: Exit through the South gate and travel 2 miles south; Headwaters is on the right. From Jackson, WY: Head north on US 191/89, turn left at Moran Junction to enter Grand Teton National Park, continue through Jackson Lake Junction for 21 miles; Headwaters is on the left. Address: 100 Grassy Lake Rd, Moran, WY 83013. GPS may be unreliable due to remote location.
Amenities
| Water | Yes |
| Fires Allowed | Yes |
| Toilets | Yes |
| Dump Station | — |
| Wifi | Yes |
| Pets Allowed | Yes |
| Showers | Yes |
| Electric Hookups | Yes |
| Water Hookups | Yes |
| Sewer Hookups | Yes |
| Camp Store | Yes |
| Price | $61 - $125 |
Vehicle
| Max RV Length | 45ft |
| Max Trailer Length | 45ft |
| Big Rig Friendly | Yes |
| Pull Through Sites | No |
Contact
| gtlcreservations@vailresorts.com | |
| Phone | +1 (307) 543-2861 |
Cell Service
| AT&T | None |
| Verizon | None |
| T-Mobile | None |
Availability
Photos
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