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
Bob J
VerifiedJuly 5, 2025 • Stayed at: 416, Loop: 400s
Beautiful and convenient location. It gave us great access to two great parks during our week-long stay.
Daniel L
VerifiedJuly 5, 2025 • Stayed at: 320, Loop: 300s
Nice quiet campsite…. Easy set up….
emily u
VerifiedJuly 4, 2025 • Stayed at: 321, Loop: 300s
LOVED this campground. So close to Yellowstone and within Grand Tetons park. Hookups were great, bathrooms and showers clean, neighbors respectful. Even a gas station, restaurant, and store within walking distance on site. Laundry worked great- a little pricey tho
Daniel B
VerifiedJuly 3, 2025 • Stayed at: 517, Loop: 500s
A nice, fully-equipped park. While it has a great location , it is pricey to be sure.
Megan F
VerifiedJuly 3, 2025 • Stayed at: 106, Loop: 100s
So convenient!
R Anthony B
VerifiedJuly 3, 2025 • Stayed at: 521, Loop: 500s
We had a tent only reservation.
The good: Our site was spacious, clean and quiet. The restrooms were super clean, well stocked, have flush toilets, and a cleaning station for dishes. The shower and laundromat facility is impeccable, not to be missed.
The bad: The check-in process took waaay too long. I asked the guy signing us in for a nice quiet site and he just ignored me, said all of their sites were nice and quiet. He put us right next to the restroom, in the RV section. Once I saw where he put us I responded that the site was not going to be quiet. He then got the manager who promptly put us in the tent only section where we belonged. The whole thing took about 30 minutes, ridiculous!
Amy E
VerifiedJuly 3, 2025 • Stayed at: 525, Loop: 500s
Staff was very friendly, camp area was clean and well maintained.
Marie R
VerifiedJuly 3, 2025 • Stayed at: 622, Loop: 600s
Very accommodating…I got my dates messed up and they were very helpful with getting it figured out!
Pam W
VerifiedJuly 2, 2025 • Stayed at: 109, Loop: 100s
Our stay was really good, room was clean and check in was fast. Less then 10 minutes to Yellowstone or Grand Tetons. And they have wifi and data there which was hard to find in the park!
Mike M
VerifiedJuly 2, 2025 • Stayed at: 519, Loop: 500s
Campground was great. Need a vehicle to travel to any sights
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!