Openings · last 7 days
10
Booking reality
Campsite Sniper detected 10 site openings here in the last 7 days
01 · Detected Opening History · the openings record · file CS-232386
When Crab Flats reopens
Crab Flats's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
18
Openings · last 90 days
18
Only 18 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.
02 · Availability Outlook · Sep 18 – Oct 3, 2026 · of 28 monitored sites
Of the 432 tracked site-nights (Sep 18 – Oct 3, 2026): 329 open for online reservation · 39 reserved · 64 on sites not offered for online reservation (first-come, first-served or administrative). Of the facility's 28 monitored sites, 23 can be reserved online and 4 are first-come, first-served (1 closed).
Where the open windows are
23.8% of tracked site-nights are not currently open for online reservation. 329 of 432 remain open; here is where they are.
Load status
Sep 18 – Oct 3, 2026Not open online23.8%
Open site-nights329 / 432
Reserved (of online inventory)39 / 368
Weekday openings182
Weekend openings147
Of the open site-nights on mapped sites, 182 fall on weekdays and 147 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Oct 2026September holds the most room. 263 of 351 site-nights are still open there.
Holiday windows
Sites open per night · of 27 sites| Window | Night | Sites open | Status |
|---|---|---|---|
| Labor Day | SAT Sep 5 | 0 | None open |
| SUN Sep 6 | 0 | None open | |
| MON Sep 7 | 0 | None open |
Labor Day: no online availability on any tracked night.
Best-availability sites
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| 001 | 16 |
| 009 | 16 |
| 010 | 16 |
| 011 | 16 |
| 016 | 16 |
The 5 sites with the most open site-nights in the current snapshot. Pair a bookable date with a free alert to cover everything else.
Next windows
As of Sep 18, 2026 snapshotNext open dateFri · Sep 18
Next open weekendFri · Sep 18
The next bookable night is Sep 18; the first open weekend starts Sep 18. Campsite Sniper can watch later dates for you.
Stays and site detail
329 open site-nights across 23 sites at Crab Flats, from the same hourly snapshot as everything above.
Multi-night stays. 31 2-night, 31 3-night, 28 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 18 at site 001.
All 23 sites with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 001 | 21 ft | None | 16 | 16 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +4 more |
| 009 | 21 ft | None | 16 | 16 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +4 more |
| 010 | 21 ft | None | 16 | 16 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +4 more |
| 011 | 21 ft | None | 16 | 16 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +4 more |
| 016 | 21 ft | None | 16 | 16 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +4 more |
| 022 | 21 ft | None | 16 | 16 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +4 more |
| 027 | 21 ft | None | 16 | 16 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +4 more |
| 028 | 21 ft | None | 16 | 16 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +4 more |
| 002 | 21 ft | None | 14 | 14 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 003 | 21 ft | None | 14 | 14 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 012 | 21 ft | None | 14 | 14 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 017 | 21 ft | None | 14 | 14 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 018 | 21 ft | None | 14 | 7 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 019 | 21 ft | None | 14 | 7 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 021 | 21 ft | None | 14 | 7 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 024 | 21 ft | None | 14 | 14 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 025 | 21 ft | None | 14 | 7 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 026 | 21 ft | None | 14 | 7 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 029 | 21 ft | None | 14 | 14 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +2 more |
| 007 | 21 ft | None | 12 | 7 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 3 |
| 013 | 21 ft | None | 12 | 7 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 3 |
| 023 | 21 ft | None | 12 | 7 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 29, Sep 30, Oct 1, Oct 2, Oct 3 |
| 008 | 21 ft | None | 11 | 11 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30 |
About Crab Flats
Overview
Crab Flats Campground is an off-roaders paradise, with plenty of off-road vehicle trails nearby for both beginner and experienced riders. Its location not only provides plentiful recreation, but also a secluded escape in Southern California's pine-covered mountains. Campground is difficult to reach without a high clearance vehicle, RV's are not recommended.
Recreation
A variety of hiking, mountain biking and off-road vehicle trails surround the campground, including the Crab Creek Trail, which provides access to nearby Fisherman's Campground. The scenery along the trail is exceptional.
Other off-road vehicle trails in the area include the 9.7-mile Redonda Ridge Trail, and Holcomb Valley Road, which runs about 26 miles and begins west of the campground. The Crab Flat Loop is also west of the campground.
Green Valley Lake is approximately 6 miles away and offers boating, fishing and swimming opportunities. The 9-acre lake is regularly stocked with a variety of fish.
Snowshoeing and cross country skiing are available in the winter.
Facilities
This primitive campground offers single-family sites for tents. Each site is equipped with a table and campfire ring with grill and bear box. Vault toilets. Overflow parking is not available.
Natural Features
The campground is located 8 miles from Green Valley Lake in the San Bernardino National Forest, near the town of Arrowhead. I t is accessed by a dirt road that crosses Deep Creek. The campground is situated among tall pine, oak and cedar trees. A variety of birds and wildlife make their home in the area.
28 monitored sites4 FCFS sitesRVs up to 21 ftNo hookups22 shadedPets OKFire pitsMax party 8
Getting there
From Running Springs, travel toward Arrowbear, to Green Valley Road. Turn left, drive approximately 4 miles to Crab Flats Campground sign. Turn left and continue about 4 miles to the campground.
San Bernardino, CA909-867-2165
BikingBoatingCampingFishingHikingSwimming SiteWildlife ViewingWinter Sports
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-232386 · facility + sites
Photo gallery
Roll CS-232386 · Crab Flats · CA12 frames · facility + sites
FAQ
How do I get a reservation at Crab Flats?
Reservations for Crab Flats are made through Recreation.gov. The current snapshot shows substantial availability: 329 of 432 tracked site-nights are open (76.2%), though availability can change. Campsite Sniper has also detected 18 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.
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 Sep 18, 2026 16:19 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.
How often do new openings appear at Crab Flats?
Campsite Sniper detected 10 site-date openings at Crab Flats in the last 7 days, 18 over 30 days and 18 over the last 90.
Can I get a multi-night stay at Crab Flats?
31 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 18 at site 001. Confirm and book on Recreation.gov.
Which sites at Crab Flats fit a 35-foot RV?
No RV-analyzable site here has a recorded maximum of 35 ft or more; the longest recorded is 21 ft.
Which month has the most availability at Crab Flats?
September 2026, with 263 open site-nights in the current snapshot of 351.
When is the next open date at Crab Flats?
As of the Sep 18, 2026 snapshot: the next open date is Fri, Sep 18 and the next open weekend starts Fri, Sep 18. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
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When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.
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