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
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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
Elizabeth J
VerifiedJuly 9, 2025 • Stayed at: 601, Loop: 600s
Perfect little cabin for the three of us. Got a very good night's rest and the showers were clean!
Nathalie M
VerifiedJuly 9, 2025 • Stayed at: 403, Loop: 400s
We were very disappointed in the condition of the park. The RV spots were very very dusty, the grass was overgrown and not mowed. On a positive note the staff person at checkin was excellent and very welcoming.
Richard B
VerifiedJuly 9, 2025 • Stayed at: 522, Loop: 500s
We were in Site 522 and it was long enough for our 42’ fifth wheel to fit with room to park the truck sideways in front of the RV. The site was level and 60’ long by about 40’ wide and quite private for the full campground. The water needs a regulator, the sewer hose will require support for proper connection to the sewer. The electric worked without issue. The roads are all gravel and dirt, so it can be dusty or muddy. We used a patio mat for entry and exit due to the pine trees, dirt, and rocks. We did not use the facilities, except for the convenience store for bread and Diesel fuel. The lodge has a restaurant we did not eat there, so no review.
Yellowstone South Gate is 5 miles north and Old Faithful is about an hour away, Grant Village is 30 minutes. Yellowstone is huge! Colter Bay is about 20 minutes south and Jackson Lake Lodge is less than 30 minutes. The views of the Tetons start 10 minutes south as Jackson Lake comes into view. Drive the Teton road past Jenny Lake when heading to Jackson Hole, the mountain range is visible the whole way and there are plenty of places to stop for pictures.
Look out for wildlife at large while driving. We had 2 Bison jams on Hwy 89 driving to and from Jackson, and 2 Bison Jams in Yellowstone along the Yellowstone River south of the Canyon.
Colter Bay and Jackson Lake Lodge have many activities. We used Headwaters as our place for sleeping and eating, since we were chasing grandkids around the parks.
Renee B
VerifiedJuly 9, 2025 • Stayed at: 403, Loop: 400s
The campground is very nice and clean and we felt very safe. The on-site store/gas/restaurant is very convenient. It is walking distance to a river where we caught a fish! The staff were all very kind and helpful. The location is great and is a perfect basecamp to enjoy both Grand Teton and Yellowstone parks. T-Mobile cell service was terrible throughout both parks (luckily my husband has AT&T), but the wifi at the campground was great. I highly recommend this campground!
David C
VerifiedJuly 9, 2025 • Stayed at: 520, Loop: 500s
Great place to stay. Has store, showers and great wifi!!
Jim N
VerifiedJuly 9, 2025 • Stayed at: 106, Loop: 100s
Helpful staff and good food.
Theresa H
VerifiedJuly 8, 2025 • Stayed at: 321, Loop: 300s
Great campsite. People are friendly and close to Yellowstone and Grand Teton.
Suzanne I
VerifiedJuly 8, 2025 • Stayed at: 507, Loop: 500s
Everything is overpriced, from the RV sites to the washers and dryers. This time of the year it was very dusty, people don’t know how to drive slow enough to keep the dust down.
Steven F
VerifiedJuly 8, 2025 • Stayed at: 606, Loop: 600s
Campgrounds were gravel parking areas, which was fine. The dust from traffic on campground roads was a problem as no matter how slowly traffic passed, it was still dusty. Otherwise, campground location was perfectly situated between grand tetons and yellowstone.
Theresa H
VerifiedJuly 8, 2025 • Stayed at: 321, Loop: 300s
Great campsite. People are friendly and close to Yellowstone and Grand Teton.
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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Nearby destinations
Last updated: June 14, 2026
