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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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
Joleen L
VerifiedAugust 15, 2025 • Stayed at: 112, Loop: 100s
We love staying at Headwaters! Great location between the parks and so many fun things to do! Showers are always clean and everyone is so nice! Can’t wait to visit again!
Kevin B
VerifiedAugust 15, 2025 • Stayed at: 420, Loop: 400s
We have a 5th Wheel, so we needed a pull -through, we booked 420, there was no way to get the rig in, way too many trees.
Tara B
VerifiedAugust 15, 2025 • Stayed at: 328, Loop: 300s
The campground is very pretty. Lots of trees. Easy access and full hookups. Walking distance to the river for fishing. The only negative I can think of for this campground was that the laundry facilities were much more expensive than any other we've stayed at.
Fabian S
VerifiedAugust 14, 2025 • Stayed at: 102, Loop: 100s
100 dollars for a non-electric cabin with a hard mattress is simply too much. The rest of the compound is very nice though and the breakfast at the lodge is nice
Beth C
VerifiedAugust 14, 2025 • Stayed at: 311, Loop: 300s
Great place to stay in Grand Teton National Park and has full hook ups. Staff was so kind and helpful. Bathrooms are clean. It is close to Colter Bay. It is a bit of a drive to the southern end of Grand Teton and a drive to North end of Yellowstone but it was worth it (in our opinion) to be at one campground to see both parks.
Joanne M
VerifiedAugust 12, 2025 • Stayed at: 702, Loop: 700s
Great campground and area
Ana May P
VerifiedAugust 12, 2025 • Stayed at: 602, Loop: 600s
We got to our cabin late and had a hard time finding it in the dark, we probably missed it 2-3 times driving by. Haha. Anyway, the cabin is locked with a key that you get from the lodge when you check in and we appreciated that. The restroom was a little walk from the cabin but it was spacious and with free showers. There was separation a separation of space from neighbors but you can still see each other. It was comfortable inside with a little lamp, a table and a small cabinet for storage beside the bunk bed.
Rene P
VerifiedAugust 12, 2025 • Stayed at: 512, Loop: 500s
This is a great rv location- full of trees, nice bathrooms, fairly spacious sites, nearby gas & store. Biggest drawback is location. It is very far North in Tetons, almost bordering Yellowstone so the drive south to all the trails takes time. But, cheaper than other in park stays and easier than staying outside the park.
Jolene K
VerifiedAugust 7, 2025 • Stayed at: 508, Loop: 500s
We travel in a motorhome and it was so luxurious to be in a "real" campground instead of a typical RV park. We had no trouble navigating to our spot. Lots of trees, and a lovely park for walks.
Tarryn T
VerifiedAugust 7, 2025 • Stayed at: 317, Loop: 300s
Great camp spot super close to Yellowstone entrance.
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!