No detected openings were recorded in the last 90 days. Campsite Sniper monitors Red Diamond Campground continuously and will alert you if that changes.
Of the 4 tracked site-nights (Apr 30 – May 3, 2027): 4 open for online reservation.
Where the open windows are
Load status
Apr 30 – May 3, 2027Of the open site-nights on mapped sites, 1 fall on weekdays and 3 on weekends (Fri–Sun).
Open dates by month
Apr 2027 – May 2027May holds the most room. 3 of 3 site-nights are still open there.
Holiday windows
Sites open per night · of 1 site| Window | Night | Sites open | Status |
|---|---|---|---|
| Memorial Day | FRI May 28 | 0 | None open |
| SAT May 29 | 0 | None open | |
| SUN May 30 | 0 | None open | |
| MON May 31 | 0 | None open |
Memorial Day: no online availability on any tracked night.
Availability
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| 001-03 | 4 |
This site currently has 4 site-nights available.
Tracked window
CoverageCampsite Sniper's data for this facility starts Apr 30, 2027. That is about 179 days after the current snapshot was taken, so dates before Apr 30, 2027 are not covered by what Campsite Sniper tracks here — they are not known to be unavailable. The site-nights shown on this page describe Apr 30, 2027 onwards only. Check Recreation.gov for earlier dates.
Stays and site detail
Multi-night stays. 1 2-night, 1 3-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Apr 30, 2027 at site 001-03.
RV length. Longest recorded site here is 60 ft. 1 site takes 25 ft, 1 site takes 35 ft, 1 site takes 40 ft.
All 1 site with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 001-03 | 60 ft | None | 4 | 4 nights | Apr 30, 2027, May 1, 2027, May 2, 2027, May 3, 2027 |
About Red Diamond Campground
Overview
Camping groups looking for a more rustic riverside experience will enjoy Red Diamond in Willamette National Forest. The campground can accommodate up to 25 guests and provides plenty of shade for warm, summer days. The South Fork McKenzie River and many fishing holes can be accessed from the site. Hiking trails can be found in the surrounding area and the Cougar Reservoir is just a short drive north.
Recreation
Fishing and kayaking are popular activities on the river. Nearby is the Box Canyon Trail with excellent opportunities for mountain biking, hiking and horseback riding. Chucksney Mountain Trail, Grasshopper Mountain Trail and Roaring Ridge are also in the area.
Facilities
The campground is laid out on one loop with picnic tables, campfire rings and ample parking. Portable toilets and trash collection are provided. No water is available, so be sure to bring your own supply.
Natural Features
The campground is nicely shaded by Douglas fir, maple and alder trees, within the midsection of the Cascade Range in western Oregon. The South Fork of the McKenzie flows nearby. The McKenzie River is a tributary of the Willamette River that runs for 90 miles, flowing into the southernmost end of the Willamette Valley. The Willamette National Forest stretches for 110 miles with varied landscapes of high mountains, narrow canyons, cascading streams and wooded slopes.
Nearby Attractions
Head to the Three Sisters Wilderness Area to hike a part of the 260 miles of trail through 286,708 acres of wild, rugged mountains and meadows. There are also bike and horse trails within 10 miles of the campground.
Getting there
From Blue River, OR, travel 4 miles east on Highway 126 to Aufderheide Drive (Forest Service Road 19). Turn right and proceed south on Aufderheide Drive, taking the Y and climbing to the top of Cougar Reservoir. Continue south on Aufderheide Drive for 13 miles to Red Diamond Group Campsite.
View on Recreation.gov ↗ Get directions ↗
Photo gallery
FAQ
How do I get a reservation at Red Diamond Campground?
Reservations for Red Diamond Campground are made through Recreation.gov. The current snapshot shows substantial availability: 4 of 4 tracked site-nights are open (100%), though availability can change. 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.
Does Campsite Sniper book this campground for me?
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
How current is this availability data?
Campsite Sniper re-checks public Recreation.gov availability for this facility every hour and republishes whenever anything changes. This facility's data last changed at Nov 2, 2026 16:20 UTC; an older timestamp means nothing has changed since that time, not that checking stopped. Always confirm final availability on Recreation.gov when you book.
Can I get a multi-night stay at Red Diamond Campground?
1 three-night opening is showing, counting only runs where the SAME site is free for all three nights. The soonest starts Apr 30, 2027 at site 001-03. Confirm and book on Recreation.gov.
Which sites at Red Diamond Campground fit a 35-foot RV?
1 of the 1 site that support RV analysis has a recorded maximum of 35 ft or more; the longest recorded is 60 ft.
Which month has the most availability at Red Diamond Campground?
May 2027, with 3 open site-nights in the current snapshot of 3.
When is the next open date at Red Diamond Campground?
Campsite Sniper cannot answer that from the current snapshot. The availability data held for Red Diamond Campground begins Apr 30, 2027 — about 179 days after this snapshot was taken, so any earlier dates are outside what Campsite Sniper is tracking here rather than known to be unavailable. Check Recreation.gov for dates before Apr 30, 2027.
Stop refreshing. Let the app watch it.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for Red Diamond Campground. One watch covers every matching site.
When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.