Openings · last 7 days
0
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
0
Openings · last 90 days
20
Only 20 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 · Apr 16 – May 3, 2027 · of 28 monitored sites
Of the 486 tracked site-nights (Apr 16 – May 3, 2027): 414 open for online reservation · 72 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
14.8% of tracked site-nights are not currently open for online reservation. 414 of 486 remain open; here is where they are.
Load status
Apr 16 – May 3, 2027Not open online14.8%
Open site-nights414 / 486
Reserved (of online inventory)0 / 414
Weekday openings207
Weekend openings207
Of the open site-nights on mapped sites, 207 fall on weekdays and 207 on weekends (Fri–Sun).
Open dates by month
Apr 2027 – May 2027April holds the most room. 345 of 405 site-nights are still open there.
Holiday windows
Sites open per night · of 27 sites| 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.
Best-availability sites
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| 001 | 18 |
| 002 | 18 |
| 003 | 18 |
| 007 | 18 |
| 008 | 18 |
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.
Tracked window
CoverageCampsite Sniper's data for this facility starts Apr 16, 2027. That is about 165 days after the current snapshot was taken, so dates before Apr 16, 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 16, 2027 onwards only. Check Recreation.gov for earlier dates.
Stays and site detail
414 open site-nights across 23 sites at Crab Flats, from the same hourly snapshot as everything above.
Multi-night stays. 23 2-night, 23 3-night, 23 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Apr 16, 2027 at site 001.
All 23 sites with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 001 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 002 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 003 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 007 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 008 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 009 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 010 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 011 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 012 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 013 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 016 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 017 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 018 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 019 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 021 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 022 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 023 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 024 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 025 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 026 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 027 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 028 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
| 029 | 21 ft | None | 18 | 18 nights | Apr 16, 2027, Apr 17, 2027, Apr 18, 2027, Apr 19, 2027, Apr 20, 2027, Apr 21, 2027, Apr 22, 2027, Apr 23, 2027, Apr 24, 2027, Apr 25, 2027, Apr 26, 2027, Apr 27, 2027 +6 more |
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: 414 of 486 tracked site-nights are open (85.2%), though availability can change. Campsite Sniper has also detected 20 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 Nov 2, 2026 18:20 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.
How often do new openings appear at Crab Flats?
Campsite Sniper detected 20 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.
Can I get a multi-night stay at Crab Flats?
23 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Apr 16, 2027 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?
April 2027, with 345 open site-nights in the current snapshot of 405.
When is the next open date at Crab Flats?
Campsite Sniper cannot answer that from the current snapshot. The availability data held for Crab Flats begins Apr 16, 2027 — about 165 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 16, 2027.
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