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
Seasonal information
2026 Season availability
Campground Amenities
Most popular amenities
General Store
Pet friendly
Showers
Water and Hygiene
- Potable Water
- Showers
On Site Services
- General Store
- Restaurant
- Propane
Pets and Policies
- Pet friendly
Report Incorrect Information
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Rates, Sites & Availability
165 Sites Available
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Site Details
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165 Sites Available
No available sites
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Reviews (2212)
What Guests Are Saying
Headwaters Campground at Flagg Ranch is praised for its beautiful location between Yellowstone and the Grand Tetons, with clean facilities and friendly staff. Guests appreciate the tidy grounds, hot showers, and convenient access to nearby attractions. While some noted tight spaces and occasional issues with hot water in the women's showers, the overall experience is very positive, with many expressing a desire to return.
What Guests Are Saying
Headwaters Campground at Flagg Ranch is praised for its beautiful location between Yellowstone and the Grand Tetons, with clean facilities and friendly staff. Guests appreciate the tidy grounds, hot showers, and convenient access to nearby attractions. While some noted tight spaces and occasional issues with hot water in the women's showers, the overall experience is very positive, with many expressing a desire to return.
Review Summary
Chris F
VerifiedOctober 2, 2024 • Stayed at: 402, Loop: 400s
I stayed at the campground in mid-September, and while the area has potential, I’m giving it 3 stars due to the flooding issues. Unfortunately, heavy rain before our arrival caused many of the campsites to be flooded. I stayed in site 402, and it was one of the few with a dry spot. If you're planning a visit, be mindful of the weather, as it significantly impacts the experience.
Mitzi B
VerifiedOctober 2, 2024 • Stayed at: 432, Loop: 400s
Campsites were nice, the restaurant was good, and the camp store was well stocked.
Brittney W
VerifiedOctober 2, 2024 • Stayed at: 204, Loop: 200s
Cute little cabin, nice break from having to drag out the camping set up, our children don’t care to share beds so we threw an air mattress in the floor. It got pretty chilly outside but not at all inside the cabin. We didn’t have any external heat source so I guess it was just really well insulated and our body heat kept it warm in there. We enjoyed the stay.
I will notate that the parking area for this particular cabin was very small we barely were able to squeeze our Highlander in but it fit. I would suggest paying close attention to the listed specs for your vehicle in each cabin when choosing a cabin
Jill M
VerifiedOctober 2, 2024 • Stayed at: 416, Loop: 400s
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Paul M
VerifiedSeptember 30, 2024 • Stayed at: 315, Loop: 300s
The roads in the park are terrible, pot holes, no gravel, water standing 4 days after a rain. So at an average of 500 hundred cabins, tent and rv sites, the price is $80.00x500=$40000 a day 7=280000 a week and can’t afford to spend money on the roads
Paul M
VerifiedSeptember 30, 2024 • Stayed at: 315, Loop: 300s
The roads in the park are terrible, pot holes, no gravel, water standing 4 days after a rain. So at an average of 500 hundred cabins, tent and rv sites, the price is $80.00x500=$40000 a day 7=280000 a week and can’t afford to spend money on the roads
Paul M
VerifiedSeptember 30, 2024 • Stayed at: 315, Loop: 300s
The roads in the park are terrible, pot holes, no gravel, water standing 4 days after a rain. So at an average of 500 hundred cabins, tent and rv sites, the price is $80.00x500=$40000 a day 7=280000 a week and can’t afford to spend money on the roads
Paul M
VerifiedSeptember 30, 2024 • Stayed at: 315, Loop: 300s
The roads in the park are terrible, pot holes, no gravel, water standing 4 days after a rain. So at an average of 500 hundred cabins, tent and rv sites, the price is $80.00x500=$40000 a day 7=280000 a week and can’t afford to spend money on the roads
Morgan G
VerifiedSeptember 28, 2024 • Stayed at: 514, Loop: 500s
Lovely campground with warm showers and super clean restrooms. The staff is lovely, and there is free drinking water available near the check-in desk. There is little tree coverage between sites, it's definitely an RV campground more than a tenting area as there is essentially no privacy between lots. But, the services on site (food, gas, stores, etc) make you feel right at home.
Mike E
VerifiedSeptember 28, 2024 • Stayed at: 412, Loop: 400s
Easy pull through, spacious campsite with plenty of shade. The restrooms were mostly clean as were the showers. The limitless hot water was definitely appreciated. The restaurant, gift shop, small grocery and the smaller liquor store inside the grocery were great amenities. Having a gas station, propane fill and laundry on site worked well for me. One disappointment and the only one is the fact that views of The Tetons are not possible from the campground.
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.
Headwaters Campground at Flagg Ranch is accessible via US 191/89, which connects to the Moran Junction. The campground is located approximately 2 miles south of the south gate of Yellowstone National Park.
Latitude & Longitude: 44.1068 / -110.666
Elevation: 2088 feet
Policies & Rules
Arrival & departure
Check out time
11AM
Cancellation policy
- Reservation fees are non-refundable. For campsites, cabins, lookouts, yurts, group sites, and similar stays, we charge a reservation service fee of $8.
- Standard cancellations usually have a $10 cancellation fee. Customers can generally cancel before the check-in date online.
- Late cancellation rules differ by stay type.
- Individual campsites: cancelling after 12:00am local time the day before arrival usually means a $10 cancellation fee plus forfeiting the first night's fee.
- Cabins, lookouts, and yurts: cancelling less than 14 days before arrival usually means a $10 cancellation fee plus forfeiting the first night's fee.
- One-night reservations: a late cancellation usually forfeits the full amount paid, up to the total original reservation cost.
- Modifications are allowed before the cut-off window, but fees depend on the change. Changing to dates completely outside the original reservation dates may trigger a $10 change fee. Extending or shortening a stay that still includes original dates usually has no change fee, though refunds may depend on timing and facility rules. Switching to the same type of campsite for the same dates usually has no change fee, but price differences are charged or refunded.
- Early departures may or may not be refunded. At certain facilities, partial refunds may be possible if staff can mark the site available for other visitors. No refund is given for a night if the early departure is requested after that day's check-out time.
- Security deposits are separate. Security deposits may be refunded to the original payment method if the facility is left in acceptable condition, as determined by the property.
Cancellation policy
- Emergency closures will result in a full refund and notifications sent to the visitor.
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!
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Last updated: June 14, 2026
