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
George A
VerifiedAugust 16, 2024 • Stayed at: 517, Loop: 500s
Good facility. Restaurant on site was great.
Michael S
VerifiedAugust 14, 2024 • Stayed at: 108, Loop: 100s
Cabin looks small from the photos, but actually more spacious. Watch out for the squirrels. The car at the cabin next to us got pelted with unopen [ie hard] pinecones and cracked their windshield.
Tyler F
VerifiedAugust 14, 2024 • Stayed at: 610, Loop: 600s
Very close to Snake River, and a short drive from other Teton attractions. Nice facilities and close to gas station/store. Dense camping, but diffused by trees.
Rodrigo R
VerifiedAugust 13, 2024 • Stayed at: 702, Loop: 700s
We stayed in a tent site on a full August Monday. Tent campsites are very near the main highway so loud until traffic settles down around 10pm in August. Sparse tree and vegetation coverage at the tent sites so feels exposed and the sites are very close to each other. Neighbor noise and lights very prominent. Overall facilities are OK with bathrooms and showers available - no major lines or waiting times even during the expected rush hour. Good location to access either Tetons or Yellowstone but this campsite feels it caters to RV more than tent campers.
Sean M
VerifiedAugust 12, 2024 • Stayed at: 518, Loop: 500s
Beautiful location between two premier parks
Thomas Z
VerifiedAugust 11, 2024 • Stayed at: 401, Loop: 400s
if your only option is campsite 401 (or 402) give them a pass - they are right at the entrance to the campgrounds and you will have headlights from late arrivals in your tent all night and a lot of car noise early in the morning as cars drive 10 feet from your tent. All other sites are much better - though this campground is pretty crowded. The staff were great - they allowed us to move to a much better tent site that was way quieter after our first night. Showers are clean and hot, bathrooms were clean and dish washing stations are nice with shelf/counters. For tent campers, there were a lot of trailers/RVs in this campground, so some generator noise
Greg H
August 11, 2024
They were helpful changing my RV site so I didn’t have to move after a night. Location is very convenient and the restaurant in lodge is good.
Michael C
VerifiedAugust 11, 2024 • Stayed at: 311, Loop: 300s
Great tree-shaded campground. Restrooms and shower houses were very clean. The boys appreciated being able to walk to the Snake River and fish.
Keturah M
VerifiedAugust 10, 2024 • Stayed at: 206, Loop: 200s
Very clean nice showers and bathrooms. The cabin we stayed in had good air circulation and felt very clean. We had trees outside for our hammocks and a lovely shaded picknic table. It would be a great stop if you are coming from Yellowstone heading into the Tetons. I wouldn't try to stay here to see both parks because the distances to the sights are too far. But, it fit our purpose of traveling perfectly.
Miranda G
VerifiedAugust 9, 2024 • Stayed at: 308, Loop: 300s
Most expensive stay in our trip though the site was not too big next to some really huge rv's.. (we travelled with a campervan).
Restrooms and showers are ok. And there is wifi, which is an exeption naar yellowstone.
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:
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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!