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The site details and map below come from the public Recreation.gov record and are accurate. For current dates and to book, go to Recreation.gov.
Willow Flat is a popular campground, located on the banks of the Cub River, in southeastern Idaho. It sits in a pretty valley, surrounded by scenic mountain views, at an elevation of 6,300 feet. Visitors enjoy fishing the river and exploring numerous forested trails.
The Cub River provides great fishing for wild cutthroat and hatchery rainbow trout.
Numerous trails begin within the campground, including a 1/2-mile nature trail to Sam Parkinson Spring.
The multi-use Cub River Trail also begins at the campground, offering great hiking, mountain and dirt biking, as well as off-road vehicle and horseback riding. The trail accesses the Highline Trail, the North Fork of St. Charles Creek and the Cub River Guard Station.
This large campground contains six group campsites than can accommodate 24 to 100 people. Numerous single-family campsites are available at the campground as well.
Some single and group sites have picnic shelters. A few single sites must be accessed via footbridges over the river from the parking spur.
Amenities available at the campground include vault toilets and drinking water. An amphitheater with bleacher seating and a cement platform is located at group site G03. Roads and parking spurs within the campground are gravel.
A mixed forest of pines, spruce and hardwoods provides partial shade and beautiful scenery. The banks of the Cub River are lined with dense stands of willow, a favorite food of local moose. Deer and elk are often seen in the area as well.
From Preston, Idaho, head south on U.S. Highway 91 for approximately 3 miles. Turn east on the Cub River Road (Forest Road 406) and travel 3 miles past the Cache National Forest boundary to the intersection of Forest Road 406 and Forest Road 407. Bear right at the intersection, staying on Forest Road 406, and travel over a mile to the campground.
View on Recreation.gov ↗ Get directions ↗






Online reservations for this facility, where offered, are made through Recreation.gov. Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
Campsite Sniper does not currently hold availability data for Willow Flat Campground, so there is nothing to date here. That is a gap in coverage — it does not mean the facility is full or closed. Check Recreation.gov for current dates.
30 of the 54 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 75 ft. 49 of those 54 sites have a recorded maximum length and 5 do not; they are not counted as fitting.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for Willow Flat Campground. One watch covers every matching online-reservable site.
When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.
Alerts monitor online-reservable inventory only; first-come, first-served sites are not included.