Mammoth Campground (Yellowstone)
4Heads uppark alerts
- Right now
- Closedrecreation.gov lists every site closed this weekend, read 16:43 UTC
- A night
- $25When it reopens, per site
- Sites
- 87In the agency’s record
- Season
- Year-roundOpen year-round
The place
the agency’s own description · what’s there · 11 notices
In the agency’s own words
Starting Tuesday April 15th, the Mammoth Campground is open and reservations are required. For reservations at the campgrounds managed by Yellowstone National Park Lodges (Fishing Bridge RV Park, Bridge Bay, Canyon, Madison, and Grant Village campgrounds), please visit the Yellowstone National Park Lodges Camping website. Keep reading
Recreation
There are many recreational opportunities in the Mammoth Hot Springs and the North area. Visit these pages to learn more: Boating Fishing Hiking Photography & Wildlife Watching Explore the boardwalks above Mammoth Hot Springs to view the the steaming Hydrothermal Features or take a drive around the vibrant travertine terraces. Explore in Winter. Ski or snowshoe among the whiffs of sulfur along the Upper Terraces. Explore the historic Fort Yellowstone area. Visit the park's Mammoth & Hot Springs North web page to learn more.
Facilities
Mammoth Campground offers: 82 campsites Some Cell Phone Reception Food Storage Lockers Trash/Recycling Collection Amphitheater - Seasonal Staff or Volunteer Host On Site - Seasonal Potable Water spigots Flush Toilets - year round There are no showers at the campground Natural Features The Mammoth Campground is in a high sagebrush steppe, scattered juniper and Douglas fir trees provide shade during hot summer months. Wildlife including elk, bison, pronghorn, and mule deer frequent the Mammoth Hot Springs and the North area of the park, depending on the season. The road from the North Entrance to the Mammoth Campground winds up the Gardner River canyon, past crumbling walls of sandstone and ancient mudflows. The vegetation is much thicker in the canyon than on the open prairie down below, the common trees being Rocky Mountain juniper, cottonwood, and Douglas-fir. Low-growing willows also crowd the river's edge in the flatter, flood-prone sections of the canyon. Watch for wildlife, which varies by the season. Eagles, osprey, dippers, and kingfishers can be spotted along the river, while bighorn sheep climb along the steeper parts of the canyon. Elk are common in Mammoth Hot Springs, while bison can often been seen along the road out to Tower–Roosevelt. Spring and Fall daytime temperatures range from 30°F (-1°C) to 60°F (15°C) with overnight lows in the teens to single digits. Snow is common in the spring and fall. Summer temperatures are often around 70°F (21°) to 80°F (27°C) and occasionally 90°F (32°F) at lower elevations. Nights are usually cool and temperatures may drop below freezing at higher elevations. Thunderstorms are common in the afternoons. During winter, sub-zero temperatures and snow are common, especially at night and at higher elevations. Winter temperatures range from 0—20°F (-20—-5°C) throughout the day, with sub-zero temperatures overnight.
Nearby Attractions
Visit the park's website to learn more about the Mammoth Hot Springs and the North area. Contact Info For facility specific information, please call (307) 344-2289.
Charges & Cancellations
Changing Reservations: There is no change fee if a visitor extends or shortens a reservation, as long as the change includes dates from the original reservation. Additionally, there is no change fee if the visitor wants to switch sites that are the same price with the same reservation dates in the same facility. If a visitor wants to switch dates that are entirely outside of the original reservation dates, there is a $10 change fee. If a reservation is made that includes dates beyond the maximum booking window, that reservation cannot be changed until 18 days have passed from the original booking date. Once a reservation date has begun, visitors cannot change a reservation using the online system or through the Call Center. Onsite staff will assist with changes or cancellations. Cancellations: Visitors may cancel their reservation prior to arrival both on-line and through the call center. A $10 service fee will be withheld from any refund for a cancellation. A visitor who cancels a reservation the day before or on the day of arrival will pay a $10.00 service fee AND forfeit the first night's approved rate including tax and applicable add-on. Cancellations for a one-night reservation will forfeit the entire amount paid and will not be subject to an additional service fee. Visitors who cancel a group overnight facility reservation less than 14 days prior to arrival date will pay a $10 service fee AND forfeit the first night’s rate. No-Shows: A no-show visitor is one who does not arrive at a campground and does not cancel the reservation by check-out time on the day after the scheduled arrival date. Staff will hold a campsite until check-out time on the day following the arrival date. No-shows are assessed $20.00 service fee and forfeit the first night's rate, taxes and applicable add-on for a campsite. Early Departures: Visitors are requested to notify staff at the facility if they depart early to allow others to use the site. If the visitor chooses to depart early, they may forfeit the approved rate and applicable tax and applicable add-on for the day of departure. If a visitor departs prior to the scheduled check-out date, they may be eligible for a partial refund. Visitors may notify the Recreation.gov call center to request a refund of remaining unused nights. If a visitor requests a refund for an early departure after the facility check-out time (10 am) has passed, the visitor will not be refunded for that night and is eligible for a refund on any additional nights that will not be used. Refunds: Visitors may submit a refund request through their Recreation.gov profile within 7 days of the end date of their reservation. Visitors may also initiate a refund request through the call center at any time after their reservation has ended. Refunds for debit or credit card payments will be issued as a credit to the original bank or credit card used to pay. For check or cash purchases, Recreation.gov will mail a Treasury check for refunds of cash, check, or money order payments to the address associated with the reservation. Treasury check refunds may take up to 6-8 weeks to arrive. In the event of an emergency closure, the Recreation.gov team or facility manager will refund all fees and will attempt to notify you using the contact information within the Recreation.gov visitor profile.
What the agency tells you
Mammoth Campground is managed by the park. If you are looking for campgrounds managed by Yellowstone National Park Lodges (Fishing Bridge RV Park, Bridge Bay, Canyon, Madison, and Grant Village campgrounds), please visit the Yellowstone National Park Lodges Camping website.
RV or Camper Unit Delivery Prohibited. The delivery or pick-up of out-of-park RVs or other camper unit rentals is prohibited.
Notify the Campground of Late Arrivals. To notify campground of late arrival for reservations more than 1 night or cancellation please call 307-344-2289
Everything else this campground posts · 8
Parking. All wheeled vehicles including trailers and motorcycles must be parked on parking pads or established roadways, so as not to block or restrict traffic in campgrounds.
Camping Occupancy Limits. Maximum occupancy is six people per site. Camp only in designated sites. Camping is limited to 14 days from July 1 through Labor Day and to 30 days the rest of the year parkwide. The 44 day camping limit includes both concession- and park-operated campgrounds.
Wildlife/Bear Regulations. ~Keep all food and related items - beverages, cooking utensils, stoves, pet food and, empty or full, food and beverage containers such as coolers, ice chests, and water jugs - locked inside your vehicle or stored in a food storage box, unless in immediate use. Bear resistant food containers must be kept in a vehicle, in a hard-sided camping unit, or in a food storage box. ~All trash and garbage must be disposed of in the provided bear-proof trash cans. Do not leave food related trash or garbage unattended. ~Washing dishes or clothing at campground hydrants or spigots is prohibited. Carry all dishwater/wastewater to the restroom toilet for disposal.
Campfires and Firewood. Wood and charcoal fires are permitted. Campfires are permitted only in established fire grates. Fires must be attended at all times. Only dead, down, and detached wood may be gathered. Wood should not extend outside the fire grate perimeter. Do not break limbs off of standing trees, living or dead. Drown campfires thoroughly with water to make sure they are completely out. NOTE: Wood and charcoal fires may be subject to special restrictions due to fire danger. Restrictions will be listed on campground information boards and on the park's Current Conditions page. Propane grills and stoves are not usually affected by fire restrictions.
Quiet Hours & Generators. Quiet hours are from 10:00 p.m. to 6:00 a.m. and are strictly enforced. No loud audio devices or other noise disturbances will be allowed during this time. Generators are prohibited between the hours of 8:00 p.m. and 8:00 a.m. Generators must be turned off durng the day when campsite is not occupied by site renter.
Stay on Boardwalks and Trails. All travel in thermal areas is restricted to NPS designated trails and boardwalks.
Fishing. To fish within the park, people 16 years of age and older are required to purchase and carry on their person a Yellowstone National Park Fishing Permit (you may purchase in advance). To learn more about fishing regulations, visit the park's Catch a Fish web page.
30 ft RV limit. From November through April.
Tents and rigs
- Sites
- 87
- Hookups
- None
- Longest rig
- 33 ft
- Paved pads
- 8 of 87
- Accessible sites
- 5
- Pets
- Allowed
- Campfires
- Allowed, barring fire bans
- Shade
- Every site
Facilities
- Toilets
- Flush Toilets - year round
- Showers
- None at this campground
- “Facilities Mammoth Campground offers: 82 campsites Some Cell Phone Reception Food Storage Lockers Trash/Recycling Collection Amphitheater - Seasonal Staff or Volunteer Host On Site - Seasonal Potable Water spigots Flush Toilets - year round There are no showers at the campground”
- Drinking water
- Yes
- Bear boxes
- Yes
- Camp host
- On site
- recreation.gov lists “Host”
- Stay limit
- 14 nights
- recreation.gov facility rule maxStay
Around the campground
- On the water
- Hot springs, River, Coast
- Amphitheater
- Auto Touring
- Birding
- Cross Country Skiing
- Cultural Activities
- Fishing
- Hiking
- Historic site
- Ranger programs
- Skiing
- Visitor center
- Wildlife viewing
- Night sky · 178th darkest of 248 in WY
- Bortle 2
Nothing to book until it reopensread 16:43 UTC
recreation.gov lists every site closed this weekend
Every one of the next thirty nights is in recreation.gov’s record and not one site is being offered on any of them. That’s a campground closed or not yet released for booking, not a sold-out one.
Tell me when it reopens
Watch for it to come back
One email when the agency reopens it, plus More Than Just Parks dispatches. Unsubscribe any time.
We check the agency’s own record once an hour, at 40 minutes past, and write the first time it stops saying closed.
Scanners that check every few minutes exist, and most of them charge. This one is free, it reads the same calendar, and it won’t always be first.
Every line of the receipt · 11
What you actually pay
“If a visitor wants to switch dates that are entirely outside of the original reservation dates, there is a $10 change fee. A $10 service fee will be withheld from any refund for a cancellation.” · this campground’s own no-show terms
Who keeps the booking fee
The agency’s own policy text says the reservation fee and the cancellation processing fee are “retained by the reservation service contractor”, and that a campground concessionaire will decline to refund them because “they did not receive these fees”. Recreation.gov is run under contract by Booz Allen Hamilton. What share of your booking fee the contractor keeps isn’t published in any federal dataset we can read, so we print no number for it. Our reporting on the contract →
How we know this receipt · 5
Why this page can’t say why
recreation.gov lists every site at Mammoth Campground (Yellowstone) closed this Friday and Saturday night. The National Park Service has published no closure notice we hold, so this page can’t say why, and it won’t fill the gap with a guess. A closed night isn’t a sold-out one: the reservations its record still carries were taken before the sites were closed.
There’s no notice to quote and no reason to argue with, so this page offers you the watch and the list below, and no letter.
Open within 60 miles · 2
The agency’s own word that these are open, not our reading of a season.
- Canyon CampgroundGallatin National Forest · 17 mi · walk-up
- Bear Creek Campground and Picnic AreaBeaverhead-Deerlodge National Forest · 44 mi
recreation.gov availability, read 16:43 UTC · rules read Sep 9, 2026 · rates Sep 10, 2026 · How we know all this
The sites
87 sites · which ones have room · the site map
The sites, ranked
from 81 mapped sitesAll 87 sites
The price is derived by CAMPANAC, not published per site: the per-night rate this campground publishes for each site’s own site type. 81 of the 87 sites listed carry one, and a site whose type has no published rate sits out of the price rather than being called free.
Measured shade is NLCD Tree Canopy Cover 2024 (USDA Forest Service / MRLC) read at the site’s own coordinate, 27% canopy or more, and only for the sites the agency gave no Shade value. It never changes the agency’s own shaded count beside it.
| A | Mammoth site #1 | type not stated | 1,169 ft | ||||
| A | Mammoth site #10 | standard nonelectric | 41 ft | 1,643 ft | $25 | ||
| A | Mammoth site #11 | standard nonelectric | 47 ft | 1,688 ft | $25 | ||
| A | Mammoth site #12 | standard nonelectric | 47 ft | 1,732 ft | $25 | ||
| A | Mammoth site #13 | standard nonelectric | 38 ft | 1,773 ft | $25 | ||
| A | Mammoth site #14 | standard nonelectric | 38 ft | 1,808 ft | $25 | ||
| A | Mammoth site #15 | standard nonelectric | yes | 21 ft | 1,923 ft | $25 | |
| A | Mammoth site #16 | standard nonelectric | 21 ft | 1,932 ft | $25 | ||
| A | Mammoth site #17 | standard nonelectric | 23 ft | 1,984 ft | $25 | ||
| A | Mammoth site #18 | standard nonelectric | 23 ft | 1,992 ft | $25 | ||
| A | Mammoth site #19 | standard nonelectric | 42 ft | 2,045 ft | $25 | ||
| A | Mammoth site #2 | standard nonelectric | 81 ft | 1,249 ft | $25 | ||
| A | Mammoth site #20 | standard nonelectric | 42 ft | 2,079 ft | $25 | ||
| A | Mammoth site #21 | standard nonelectric | 45 ft | 2,129 ft | $25 | ||
| A | Mammoth site #22 | standard nonelectric | 45 ft | 2,167 ft | $25 | ||
| A | Mammoth site #23 | standard nonelectric | 111 ft | 2,147 ftGardner River | $25 | ||
| A | Mammoth site #24 | standard nonelectric | 103 ft | 2,208 ftGardner River | $25 | ||
| A | Mammoth site #25 | standard nonelectric | 103 ft | 2,114 ftGardner River | $25 | ||
| A | Mammoth site #3 | standard nonelectric | 61 ft | 1,331 ft | $25 | ||
| A | Mammoth site #4 | standard nonelectric | yes | 41 ft | 1,389 ft | $25 | |
| A | Mammoth site #5 | standard nonelectric | 41 ft | 1,420 ft | $25 | ||
| A | Mammoth site #54 | standard nonelectric | 102 ft | 2,280 ftGardner River | $25 | ||
| A | Mammoth site #55 | standard nonelectric | 33 ft | yes | 111 ft | 2,223 ftClematis Creek | $25 |
| A | Mammoth site #56 | type not stated | 2,190 ftClematis Creek | ||||
| A | Mammoth site #57 | standard nonelectric | 137 ft | 2,162 ftClematis Creek | $25 | ||
| A | Mammoth site #58 | standard nonelectric | 129 ft | 2,027 ft | $25 | ||
| A | Mammoth site #59 | standard nonelectric | 88 ft | 1,767 ft | $25 | ||
| A | Mammoth site #6 | standard nonelectric | 48 ft | 1,466 ft | $25 | ||
| A | Mammoth site #60 | standard nonelectric | 88 ft | 1,680 ft | $25 | ||
| A | Mammoth site #61 | standard nonelectric | 41 ft | 1,521 ft | $25 | ||
| A | Mammoth site #62 | standard nonelectric | 41 ft | 1,488 ft | $25 | ||
| A | Mammoth site #63 | standard nonelectric | 47 ft | 1,448 ft | $25 | ||
| A | Mammoth site #64 | standard nonelectric | 45 ft | 1,375 ft | $25 | ||
| A | Mammoth site #65 | standard nonelectric | 45 ft | 1,336 ft | $25 | ||
| A | Mammoth site #66 | standard nonelectric | 52 ft | 1,287 ft | $25 | ||
| A | Mammoth site #67 | standard nonelectric | 22 ft | 1,228 ft | $25 | ||
| A | Mammoth site #68 | standard nonelectric | 22 ft | 1,216 ft | $25 | ||
| A | Mammoth site #7 | standard nonelectric | 44 ft | 1,513 ft | $25 | ||
| A | Mammoth site #8 | standard nonelectric | 44 ft | 1,554 ft | $25 | ||
| A | Mammoth site #9 | standard nonelectric | 41 ft | 1,603 ft | $25 | ||
| B | Mammoth site #26 | standard nonelectric | 87 ft | 2,092 ftGardner River | $25 | ||
| B | Mammoth site #27 | standard nonelectric | 85 ft | 2,063 ftGardner River | $25 | ||
| B | Mammoth site #28 | standard nonelectric | 33 ft | 2,060 ftGardner River | $25 | ||
| B | Mammoth site #29 | standard nonelectric | 33 ft | 2,072 ftGardner River | $25 | ||
| B | Mammoth site #30 | standard nonelectric | 26 ft | 2,101 ftGardner River | $25 | ||
| B | Mammoth site #31 | standard nonelectric | 26 ft | 2,083 ftGardner River | $25 | ||
| B | Mammoth site #32 | standard nonelectric | 67 ft | 2,123 ftGardner River | $25 | ||
| B | Mammoth site #33 | standard nonelectric | 36 ft | 2,174 ftGardner River | $25 | ||
| B | Mammoth site #34 | standard nonelectric | 36 ft | 2,166 ftGardner River | $25 | ||
| B | Mammoth site #35 | standard nonelectric | 31 ft | 2,195 ftGardner River | $25 | ||
| B | Mammoth site #36 | standard nonelectric | yes | 31 ft | 2,213 ftGardner River | $25 | |
| B | Mammoth site #37 | type not stated | 2,184 ftGardner River | ||||
| B | Mammoth site #38 | standard nonelectric | 45 ft | 2,202 ftGardner River | $25 | ||
| B | Mammoth site #39 | standard nonelectric | 45 ft | 2,176 ftGardner River | $25 | ||
| B | Mammoth site #40 | standard nonelectric | 52 ft | 2,199 ftGardner River | $25 | ||
| B | Mammoth site #41 | type not stated | 2,164 ftGardner River | ||||
| B | Mammoth site #42 | standard nonelectric | yes | 50 ft | 2,188 ftGardner River | $25 | |
| B | Mammoth site #43 | standard nonelectric | 50 ft | 2,163 ftGardner River | $25 | ||
| B | Mammoth site #44 | standard nonelectric | 81 ft | 2,153 ftGardner River | $25 | ||
| B | Mammoth site #45 | standard nonelectric | 81 ft | 2,153 ftGardner River | $25 | ||
| B | Mammoth site #46 | standard nonelectric | 65 ft | 2,179 ftGardner River | $25 | ||
| B | Mammoth site #47 | standard nonelectric | 65 ft | 2,229 ftGardner River | $25 | ||
| B | Mammoth site #48 | standard nonelectric | 76 ft | 2,307 ftGardner River | $25 | ||
| B | Mammoth site #49 | standard nonelectric | 76 ft | 2,382 ftGardner River | $25 | ||
| B | Mammoth site #50 | standard nonelectric | 123 ft | 2,241 ftClematis Creek | $25 | ||
| B | Mammoth site #51 | standard nonelectric | 91 ft | 2,220 ftClematis Creek | $25 | ||
| B | Mammoth site #52 | standard nonelectric | 87 ft | 2,214 ftClematis Creek | $25 | ||
| B | Mammoth site #53 | standard nonelectric | 87 ft | 2,209 ftClematis Creek | $25 | ||
| Scan and Pay | Mammoth Campground (Yellowstone) Scan and Pay | type not stated | |||||
| tent | Mammoth site #80 | standard nonelectric | 24 ft | 2,330 ftClematis Creek | $25 | ||
| tent | Mammoth site #81 | standard nonelectric | 37 ft | 2,330 ftGardner River | $25 | ||
| tent | Mammoth site #82 | standard nonelectric | 42 ft | 2,330 ftClematis Creek | $25 | ||
| tent | Mammoth site #83 | standard nonelectric | 40 ft | 2,328 ftGardner River | $25 | ||
| tent | Mammoth site #84 | standard nonelectric | 40 ft | 2,334 ftClematis Creek | $25 | ||
| tent | Mammoth site #85 | standard nonelectric | 43 ft | 2,334 ftGardner River | $25 | ||
| tent | Mammoth site #86 | type not stated | 2,338 ftClematis Creek | ||||
| Tent | Mammoth site #69 | standard nonelectric | 69 ft | 2,176 ftGardner River | $25 | ||
| Tent | Mammoth site #70 | standard nonelectric | 21 ft | 2,238 ftGardner River | $25 | ||
| Tent | Mammoth site #71 | standard nonelectric | 21 ft | 2,220 ftGardner River | $25 | ||
| Tent | Mammoth site #72 | standard nonelectric | 32 ft | 2,272 ftGardner River | $25 | ||
| Tent | Mammoth site #73 | standard nonelectric | 32 ft | 2,265 ftGardner River | $25 | ||
| Tent | Mammoth site #74 | standard nonelectric | 71 ft | 2,324 ftClematis Creek | $25 | ||
| Tent | Mammoth site #75 | standard nonelectric | 25 ft | 2,345 ftGardner River | $25 | ||
| Tent | Mammoth site #76 | standard nonelectric | 25 ft | 2,321 ftClematis Creek | $25 | ||
| Tent | Mammoth site #77 | standard nonelectric | 24 ft | 2,338 ftGardner River | $25 | ||
| Tent | Mammoth site #78 | standard nonelectric | 24 ft | 2,327 ftClematis Creek | $25 | ||
| Tent | Mammoth site #79 | standard nonelectric | 24 ft | 2,332 ftGardner River | $25 |
25 of 87 listed
Getting there
the map and the coordinate · the agency’s directions · the phone number
Where it is
Eagle Creek Campground - Custer Gallatin National ForestExecutive Order No. 3053 Federal Game Refuge Withdrawal · 4.8 mi
Indian Creek Campground (WY)Yellowstone National Park · 6.3 mi
Timber Camp CampgroundGallatin National Forest · 9.4 mi
Bear Creek Campground - MTGallatin National Forest · 11 mi
Tower Fall CampgroundYellowstone National Park · 16 mi
Norris CampgroundYellowstone National Park · 16 miThe Mammoth Campground is located in the Mammoth Hot Springs area in the Northen section of the park, five miles from the park's North Entrance near Gardiner, MT. Visit the park's website for more information including directions and maps: https://www.nps.gov/yell/planyourvisit/directions.htm
The weather
the next four days · the thirty-year normal
Next four days, and the thirty-year normal
Forecast
NWS forecast for Mammoth, WY
Typical weather
Typical October night 29°F, day 54°F.
Coldest month of the year: typical January night 12°F, below freezing. Bring a bag rated colder than that, and expect ice in the water bottle.
Daily high and lowDays with 0.10 in or more
A normal is the 1991-2020 average for the month, not a forecast: about half of all Julys are colder than the July line. The seven-day forecast above answers the other question.
The land, and who answers for it
what threatens it · who answers for it
What threatens this place
You’re camping on ground somebody wants. We track the threats and the comment deadlines.
Who answers for this land
Mammoth Campground (Yellowstone) is in Wyoming’s at-large congressional district. Its representative, Harriet Hageman (R), votes on the laws that decide what happens to this land. Public-lands grade so far: F. See every public-lands vote →