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
Robin J
VerifiedJanuary 4, 2026 • Stayed at: 708, Loop: 700s
Lovely campsite, great location. Really enjoyed our stay
Alexandra F
VerifiedDecember 28, 2025 • Stayed at: 325, Loop: 300s
Grand emplacement dans les bois, campement agréable et réservation simple !
Dan K
December 24, 2025
Cool little campground. Kinda tight and cozy. The Staff was exceptionally helpful and friendly. There was a history talk one evening, we were a little late for. Very convenient to Tetons and Yellowstone’s not far away. Good spot for us in our 33’ 5th Wheel toy hauler.
Robert H
VerifiedDecember 23, 2025 • Stayed at: 529, Loop: 500s
Very well located between Yellowstone and the Grand Tetons.
Sterling L
VerifiedDecember 23, 2025 • Stayed at: 212, Loop: 200s
Perfect location between Grand Teton and Yellowstone. Excellent restaurant, clean bathrooms, & hot showers.
Kimberly H
VerifiedDecember 23, 2025 • Stayed at: 505, Loop: 500s
Nice quiet campground that's a quick drive to either Tetons Nation park or to Yellowstone. Had no issues getting our 40 foot fifth wheel into our site
Susan N
VerifiedDecember 23, 2025 • Stayed at: 108, Loop: 100s
none
David W
VerifiedDecember 23, 2025 • Stayed at: 527, Loop: 500s
Very good campground. It's in the woods so can be dusty.
Sarah T
VerifiedDecember 22, 2025 • Stayed at: 404, Loop: 400s
The grounds were tidy and clean. The prairie flowers were beautiful. I have traveled across the country several times but had never been this route and the scenery was simply beautiful.
William R
VerifiedDecember 18, 2025 • Stayed at: 602, Loop: 600s
This was our third time we stayed i the JDR. This time we had two groups, one in a Cabin and the other at a RV Site. Both were great. The Restrooms were clean and maintained well.
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!