Maine federal campgrounds
7 bookable campgrounds on federal land in Maine, from Recreation.gov's official catalog — grouped by the agency that runs them. These are the ones we can watch for cancellations.
USDA Forest Service
4 campgrounds
National Park Service
3 campgrounds
Maine has 18 more federal recreation sites in the Recreation.gov catalog — day-use areas, trailheads and first-come campgrounds. They take no reservations, so there is no cancellation to alert you about, and we don't list them here.