Pick a site on the map to see its availability calendar.
Only 2 openings in the last 90 days: not enough recent activity for a reliable pattern. A free Campsite Sniper alert watches around the clock instead, and pings you the moment one opens.
Of the 183 tracked site-nights (Nov 2, 2026 – May 3, 2027): 174 open for online reservation · 9 reserved.
Of the open site-nights on mapped sites, 101 fall on weekdays and 73 on weekends (Fri–Sun).
December holds the most room. 31 of 31 site-nights are still open there.
| Window | Night | Sites open | Status |
|---|---|---|---|
| Thanksgiving | THU Nov 26 | 0 | None open |
| FRI Nov 27 | 0 | None open | |
| SAT Nov 28 | 1 | Open | |
| Christmas | THU Dec 24 | 1 | Open |
| FRI Dec 25 | 1 | Open | |
| New Year | THU Dec 31 | 1 | Open |
| FRI Jan 1 | 1 | Open | |
| 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 |
Thanksgiving: no site is currently available for the complete three-night stay. Thursday and Friday have no online availability; individual Saturday night remains open. Christmas: 1 site is available for the complete two-night stay. New Year: 1 site is available for the complete two-night stay. Memorial Day: no online availability on any tracked night.
| Site | Open site-nights |
|---|---|
| Site 1 | 174 |
This site currently has 174 site-nights available.
The next bookable night is Nov 2; the first open weekend starts Nov 6. Campsite Sniper can watch later dates for you.
Multi-night stays. 3 2-night, 3 3-night, 2 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Nov 2 at site Site 1.
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| Site 1 | 20 ft | None | 174 | 157 nights | Nov 2, Nov 3, Nov 4, Nov 5, Nov 6, Nov 7, Nov 8, Nov 9, Nov 10, Nov 11, Nov 12, Nov 15 +162 more |
Located along Three Rivers, this group campground is ideal for family gatherings and group arrangements. Conveniently located on Highway 22 and surrounded by forest, this campground provides a picturesque setting to enjoy a fun-filled, group camping experience.
The campground offers an open-space style group camping experience, featuring a recently completed picnic shelter. The river provides opportunities for fishing or summer swimming, and hiking trails are within a few miles of the campground.
The group site includes eight picnic tables, picnic shelter, group fire ring, individual rock fire pits, one vault toilet, garbage dumpster, and a parking area. Maximum of 50 visitors per reservation.
Open grassy meadow surrounded by forests, rivers, and coastal mountains, this campground offers a picturesque setting to gather, camp, fish, and play.
From Hebo, OR: Travel south on Highway 22 for 4.2 miles. The campground is on the right.
View on Recreation.gov ↗ Get directions ↗



Reservations for Castle Rock Group Campground are made through Recreation.gov. The current snapshot shows substantial availability: 174 of 183 tracked site-nights are open (95.1%), though availability can change. Campsite Sniper has also detected 2 site openings here in the last 90 days, so further dates may appear. 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 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 17:20 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.
Campsite Sniper detected 2 site-date openings here over the last 90 days, none in the last 7. A free alert watches around the clock and pings you the moment one appears.
3 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Nov 2 at site Site 1. Confirm and book on Recreation.gov.
No RV-analyzable site here has a recorded maximum of 35 ft or more; the longest recorded is 20 ft.
December 2026, with 31 open site-nights in the current snapshot of 31.
As of the Nov 2, 2026 snapshot: the next open date is Mon, Nov 2 and the next open weekend starts Fri, Nov 6. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for Castle Rock Group 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.