Openings · last 7 days
0
Availability is not tracked here yet
Campsite Sniper does not currently hold availability data for Porcupine Flat Campground. That is a gap in what Campsite Sniper tracks — it does not mean the facility is full, closed, or unavailable. Recreation.gov may well be showing open dates right now.
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.
01 · Detected Opening History · the openings record · file CS-10083831
When Porcupine Flat Campground reopens
Porcupine Flat Campground's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
20
Openings · last 90 days
998
Weekday pattern
Detected openings by day of week · 90dNo strong weekday pattern is evident in the openings Campsite Sniper has detected: 998 openings spread across the week.
Hour-of-day pattern
First detected by hour · local time · last 90 daysThe largest concentrations of detected openings were first detected during the 05:00 and 12:00 local-time hours. Those hours contained 511 of 998 detected openings (51.2%). Hours show when Campsite Sniper first detected each opening, in Pacific Time, not when the change was made upstream.
Lead-time profile
Days before stay date · percentilesHalf of the openings Campsite Sniper detected appeared at least 14 days before the stay date; the middle 50% land 13–14 days out. Set an alert if you want Campsite Sniper to monitor future openings.
Highest-churn sites
Most openings · 90d| Site | Openings | Share of all openings |
|---|---|---|
| 009 | 25 | 2.5% |
| 001 | 24 | 2.4% |
| 014 | 24 | 2.4% |
| 029 | 24 | 2.4% |
| 007 | 23 | 2.3% |
Site 009 had the most detected openings in the last 90 days: 25. One free watch covers every site here.
About Porcupine Flat Campground
Overview
Staying at Porcupine Flat Campground requires reservations. No first come, first serve sites are available.
The campground typically opens in late-June and closes mid-October. The opening date varies depending on the opening of the Tioga Road and related seasonal facility and road work.
Porcupine Flat Campground is located off the Tioga Road about 30 minutes west of Tuolumne Meadows and over an hour from Yosemite Valley. RVs and Trailers are not recommended for the narrow roads in this more primitive campground. At an elevation of 8,100 feet (2,500 m) elevation, the campground is near Porcupine Creek, which is the only water source (must be filtered, treated, or boiled). The Porcupine Creek Trailhead is nearby. There are no visitor services close to the campground.
For additional park information, call (209)372-0200 or visit www.nps.gov/yose
Recreation
Yosemite's trails, cliffs, roads and rivers provide endless recreational activities for any kind of visitor. Hiking, biking, rock climbing, fishing, horseback riding, rafting, auto touring, and photography are all very popular activities within the park. The White Wolf area has hiking and backpacking opportunities that begin near the campground, such as Lukens Lake, Harden Lake and the Grand Canyon of the Tuolumne. The Crane Flat area, 23 miles west, offers many other hiking opportunities such as Tuolumne and Merced Groves of Giant Sequoias, both of which require a 2.5 to 3-mile roundtrip hike to view. Tuolumne Meadows and all it's High Sierra wonder lie 25 miles to the east, where many beautiful day and overnight excursions await.
The Tioga Road offers a 39-mile scenic drive past forests, meadows, lakes, and granite domes. The road’s elevation ranges from 6,200 feet to just under 10,000 feet. Tuolumne Meadows embodies the high-country of the Sierra Nevada and is a good starting point for countless hikes. There is little to no cell service along the road.
Facilities
Porcupine Flat is extremely primitive and has no connectivity or drinking water. Basic amenities include vault toilets, trash/recycling collection, food storage lockers, fire rings and picnic tables.
Wood and charcoal fires are permitted when the campground is open.
For a map of the campground, visit https://www.nps.gov/yose/planyourvisit/porcupinecamp.htm
Natural Features
Yosemite National Park covers nearly 1,200 square miles (3,100 square km) in the Sierra Nevada, with elevations ranging from about 2,000 feet (600 m) to 13,000 ft (4,000 m). Yosemite receives 95% of its precipitation between October and May (and over 75% between November and March). Most of Yosemite is blanketed in snow from about November through May. (The Valley can be rainy or snowy in any given winter storm.)
Porcupine Flat is situated along a seasonal creek which is it's only source of water. Creek water must be treated and/or boiled before consuming.
Nearby Attractions
Just 25 miles away is Yosemite Valley, an awe-inspiring landscape containing many of the famous features for which Yosemite National Park is known. Hiking trails and bike paths are abundant in the valley. Rafting the Merced River is a fun way to cool down on a summer day when water levels are sufficient. Yosemite Valley also offers numerous guided bus tours, educational programs, museums, ranger-led activities, and an art center with workshops.
The Tioga Road offers a 39-mile scenic drive past forests, meadows, lakes and granite domes. Tuolumne Meadows embodies the high-country of the Sierra Nevada, with its broad sub-alpine meadows and granite peaks. Several trailheads line the road offering hikes to beautiful, secluded areas that can only be accessed and enjoyed by foot.
Beautiful Hetch Hetchy Reservoir, just 23 miles from Crane Flat, is home to spectacular scenery and numerous wilderness trailheads.
56 monitored sitesRVs up to 24 ftNo hookupsPets OKFire pitsMax party 6
Getting there
The Porcupine Flat Campground is located off the Tioga Road 24 miles west from Tioga Pass, the park’s east entrance (35 minutes). From Yosemite Valley, take the Big Oak Flat Road and Tioga Road 38 miles (approximately 70 minutes). From Hwy. 120 west/Big Oak Flat Road, take the Big Oak Flat Road and Tioga Road 31 miles (45 minutes). You’ll find the campground north of the Tioga Road.
BackpackingBirdingCampingClimbingFishingHikingPhotographyStar GazingSwimmingWilderness
View on Recreation.gov ↗ Get directions ↗
02 · Field Photos · roll CS-10083831 · facility + sites
Photo gallery
Roll CS-10083831 · Porcupine Flat Campground12 frames · facility + sites
FAQ
How do I get a reservation at Porcupine Flat Campground?
Online reservations for this facility, where offered, are made through Recreation.gov. Campsite Sniper has also detected 998 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 does not currently hold availability data for Porcupine 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.
How often do new openings appear at Porcupine Flat Campground?
Campsite Sniper detected 998 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.
Which sites at Porcupine Flat Campground fit a 35-foot RV?
No RV-analyzable site here has a recorded maximum of 35 ft or more; the longest recorded is 24 ft. 55 of those 56 sites have a recorded maximum length and 1 does not; it is not counted as fitting.
How far ahead of a stay do openings appear at Porcupine Flat Campground?
Half of the openings Campsite Sniper detected appeared at least 14 days before the stay date; the middle 50% landed 13-14 days out. Campsite Sniper can monitor future changes for dates you select.
Stop refreshing. Let the app watch it.
Filter
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
Watch
We run paced availability checks for Porcupine Flat Campground. One watch covers every matching site.
Get the ping
When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.