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
MANUEL M
VerifiedOctober 31, 2025 • Stayed at: 517, Loop: 500s
Great location surrounded by lots of trees. Park staff was very helpful. Very clean facility
Carey Ann S
VerifiedOctober 28, 2025 • Stayed at: 106, Loop: 100s
We had an excellent time camping in the camper cabins. The bathrooms were well maintained and the check in was seamless.
Douglas R
VerifiedOctober 25, 2025 • Stayed at: 427, Loop: 400s
Headwaters is in a great location for visiting both Yellowstone and Grand Teton. It's been a regular stop for me for the last 10 years and will return next year. The convenience of the store and gas station is great and the prices are reasonable (both gas and food).
Christi D
VerifiedOctober 18, 2025 • Stayed at: 520, Loop: 500s
Friendly staff and nice, clean, facilities. The hot showers were a blessing after being on the road and camping with two dogs. The only real downside was the noise. The campsites are the equivalent of dorm rooms, small and crammed together with no barrier. You hear every conversation, every door slammed (after hours), and every footstep. If you're sleeping in an RV, it's probably not an issue, but I was tent camping and had no way to tell from the map what I was in for. Still give it four stars for clean restrooms and lovely people.
Martha T
VerifiedOctober 13, 2025 • Stayed at: 323, Loop: 300s
Great campground with full hook-ups!
Wendy T
VerifiedOctober 13, 2025 • Stayed at: 712, Loop: 700s
Beautifil location, I visited in the Fall and it was quiet with a great location. I visited both Grant Tetons and Yellowstone. Would recommend to anyone wnating to visit.
Mark P
VerifiedOctober 13, 2025 • Stayed at: 502, Loop: 500s
Quiet location with minimal traffic on the outside row of sites. Easy access to the sites. Location between Grand Teton and Yellowstone made it possible to visit either park.
Amelda K
VerifiedOctober 10, 2025 • Stayed at: 208, Loop: 200s
Great campground and facilities. Staff were kind, informative, and helpful! It was a little on the pricey side for our tiny cabin but split between a few people did not completely break the bank. We treated ourselves to breakfast at the restaurant in the lodge and that was great!
Chris R
VerifiedOctober 10, 2025 • Stayed at: 311, Loop: 300s
Need to trim tree branches and install gravel
Chris W
VerifiedOctober 9, 2025 • Stayed at: 608, Loop: 600s
Great location and stunning views. Lots of places to walk or hike around the RV camp. Very quite and well kept.
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!