Sierra National Forest · California
Overview Mammoth Pool Campground is located half a mile from the recreation area at Mammoth Pool Reservoir. This primitive campground winds through a stand of Ponderosa pine and cedar trees along the San Joaquin River in the midst of a mountainous landscape. Recreation Mammoth Pool Reservoir offers a variety of recreational activities, including fishing, boating, hiking and wildlife viewing.
Sites at Mammoth Pool are reserved through Recreation.gov. Sites here can be reserved in advance through the official system, and they are claimed fast — cancellations then trickle back all season, unannounced, at any hour of the day or night.
| Total sites | 48 |
|---|---|
| Site types | Standard |
| Book through | Recreation.gov |
| Official listing | Recreation.gov |
Because sites are booked months ahead, a steady share of reservations get cancelled as trips fall through. Each cancellation instantly returns that site and those nights to the official calendar — first-come, first-served, no waitlist, no announcement. Refreshing the booking page yourself, every few minutes for weeks, works in theory. In practice, the people who get these sites are the ones who hear about the opening first.
ItOpened scans the Recreation.gov calendar for Mammoth Pool around the clock. When a site matching your dates and your vehicle opens, you get a text with a direct link to it. You book it yourself, in your own account, at the normal price. We never book, hold, or resell — your fee pays for monitoring, and openings are first-come, so speed is the whole game.
| Rancheria | Cancellation alerts available |
|---|---|
| Dinkey Creek | Cancellation alerts available |
| Dorabelle Campground | Cancellation alerts available |
| Spring Cove | Cancellation alerts available |
| Summerdale Campground | Cancellation alerts available |
| Lupine | Cancellation alerts available |
| Wishon Bass Lake | Cancellation alerts available |
| Jackass Meadow | Cancellation alerts available |
| Upper Billy Creek Cg | Cancellation alerts available |
| Chilkoot | Cancellation alerts available |
| Vermillion | Cancellation alerts available |
| Deer Creek | Cancellation alerts available |
| Forks Campground (Sierra) | Cancellation alerts available |
| Kinnikinnick | Cancellation alerts available |
| Catavee | Cancellation alerts available |
| Rock Creek (Sierra National Forest, CA) | Cancellation alerts available |
| Soquel Campground | Cancellation alerts available |
| Mono Hot Springs | Cancellation alerts available |
| Cedar Bluff | Cancellation alerts available |
| Kelty Meadow | Cancellation alerts available |
| Mono Creek | Cancellation alerts available |
| Sweetwater | Cancellation alerts available |
| College | Cancellation alerts available |
| Lower Billy Creek | Cancellation alerts available |
| Fish Creek (Ca) | Cancellation alerts available |
| Crane Valley | Cancellation alerts available |
| Dirt Flat | Cancellation alerts available |
| Placer Campground | Cancellation alerts available |
| Recreation Point | Cancellation alerts available |
| Dry Gulch | Cancellation alerts available |
| Texas Flats | Cancellation alerts available |
| Badger Flats Group | Cancellation alerts available |
| Kirch Flat Group Campground | Cancellation alerts available |
Page data refreshed 2026-10-29. Site facts come from the official directory listing for Mammoth Pool; cancellation statistics come from our own scanning logs.