Warning
GeneralSummer Update: Enhancing our campground for youOur 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
Number of accommodations: 165
Campground Amenities
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General Store
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Pet Friendly
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Potable Water
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Restaurant
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Showers
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Propane
Seasonal information
2026 Season availability
Sites & Availability
165 Sites Available
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No available sites
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Site Details
Select a site to view details
165 Sites Available
No available sites
All sites are booked for your selected dates. Try showing all sites to see booked options, create an alert to be notified when something opens up, or adjust your dates.
Reviews (554)
What Guests Are Saying
Headwaters Campground at Flagg Ranch is highly praised for its excellent location between Yellowstone and Grand Teton, making it a convenient base for exploring both parks. Reviewers appreciate the clean facilities, friendly staff, and well-maintained grounds, along with amenities like hot showers and a grocery store on-site. While some noted noise levels and tight campsite spacing, many expressed satisfaction with their overall experiences and indicated they would return.
What Guests Are Saying
Headwaters Campground at Flagg Ranch is highly praised for its excellent location between Yellowstone and Grand Teton, making it a convenient base for exploring both parks. Reviewers appreciate the clean facilities, friendly staff, and well-maintained grounds, along with amenities like hot showers and a grocery store on-site. While some noted noise levels and tight campsite spacing, many expressed satisfaction with their overall experiences and indicated they would return.
Review Summary
cara G
VerifiedAugust 1, 2025 • Stayed at: 615, Loop: 600s
Headwaters campground was the perfect place to camp. It’s conveniently located between Yellowstone and the Tetons national parks. The employees were helpful and very accommodating. The fellow campers were friendly. The hiking trails through the park provided beautiful views of the mountains and wildlife.
I would definitely recommend this campground to anyone.
Mary W
VerifiedJuly 31, 2025 • Stayed at: 417, Loop: 400s
Beautiful RV campground. Lots of room at each site.
Joseph M
VerifiedJuly 30, 2025 • Stayed at: 603, Loop: 600s
Location between Grand Teton and Yellowstone was perfect; it was nice to have a simple cabin rather than tent camp.
Sean N
VerifiedJuly 30, 2025 • Stayed at: 428, Loop: 400s
Fantastic spot in the heart of the NPS.
Mark S
VerifiedJuly 30, 2025 • Stayed at: 522, Loop: 500s
This is our third stay at Headwaters - every time it's been great - nice sites - great people working there - THANKS!
Tom L
VerifiedJuly 29, 2025 • Stayed at: 301, Loop: 300s
The dirt roads are horrible as you can’t even sit outside without getting dusted by vehicles even though they are going less than 10 miles an hour!
will not stay or recommend until roads are fixed.. as much as you charge to stay there should be funds to replace roads asap please
john p
VerifiedJuly 29, 2025 • Stayed at: 511, Loop: 500s
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Katherine B
VerifiedJuly 28, 2025 • Stayed at: 320, Loop: 300s
Location was great. Prices were inflated and the bath house needs some work. There wasn’t any soap the entire stay and the water would shut off when too many people were using it. The hot water would run out also.
Joseph K
VerifiedJuly 28, 2025 • Stayed at: 317, Loop: 300s
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Margaret C
VerifiedJuly 27, 2025 • Stayed at: 504, Loop: 500s
Excellent location for a relaxed campground experience. Great access for a pleasant walk to the Snake River. Although we had already visited Grand Teton, it is close enough to explore that park from this campground. It was nice to have the gas station, convenience store and restaurant nearby.
Location Headwaters Campground at Flagg Ranch
Address:
1 Grassy Lake Road
Moran, WY, 83013
United States
The address for Headwaters at Flagg Ranch is located below; however, due to this property's remote location, GPS cannot always be relied on.
100 Grassy Lake Rd.
Moran, WY 83013
(Two miles south of the south gate of Yellowstone)
From Yellowstone:
Follow the signage to the South gate of Yellowstone - about 40 miles from Old Faithful.
After exiting the south gate, Headwaters at Flagg Ranch will be just 2 miles South on the right side of the road.
From Jackson, WY:
Head North from Jackson on US 191/89.
Turn left to continue on US 191/89 at the Moran Junction and enter the Grand Teton National Park through the Moran entrance.
Continue straight through the Jackson Lake junction for another 21 miles.
Headwaters at Flagg Ranch will be located on the left side of the road.
As you pull into the property, the lodge will be located on your right and the campground will be on the left.
Please note Grassy Lake Road is a dirt and gravel road that leads to Ashton, Idaho. Four-wheel drive is strongly encouraged on this narrow single-lane road. It is not recommended for trailer traffic or large vehicles.
Latitude & Longitude: 44.1068 / -110.666
Elevation: 2088 feet
Policies & Rules
| Category | About |
|---|---|
| General |
The maximum stay permitted at the Flagg Ranch Campground is 14 nights, and the maximum cumulative stay between all park campgrounds is 30 nights. Changing Reservations: • If a visitor wants to switch dates that are entirely outside of the original reservation dates, there is a $10 change fee.
Deposits:
Cancellations:
Late Cancellations or Cancellations within the Cut-off Window:
No-Shows:
Early Departures:
Refunds:
Emergency Closures:
|
Warnings & Advisories
Warning
GeneralSummer Update: Enhancing our campground for youOur 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!