Openings · last 7 days
70
Booking reality
Campsite Sniper detected 70 site openings here in the last 7 days
01 · Detected Opening History · the openings record · file CS-234290
When Coldwater Campground - Inyo NF (CA) reopens
Coldwater Campground - Inyo NF (CA)'s openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
107
Openings · last 90 days
118
Weekday pattern
Detected openings by day of week · 90dWednesday accounted for the largest share of the openings Campsite Sniper detected. 45 of 118 openings detected in the last 90 days occurred on a Wednesday (38.1%), with Tuesday (27) and Thursday (16) next in line.
Hour-of-day pattern
First detected by hour · local time · last 90 daysThe largest concentrations of detected openings were first detected during the 08:00 and 12:00 local-time hours. Those hours contained 28 of 118 detected openings (23.7%). 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 8 days before the stay date; the middle 50% land 5–12 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 |
|---|---|---|
| 003 | 7 | 5.9% |
| 044 | 7 | 5.9% |
| 049 | 7 | 5.9% |
| 032 | 6 | 5.1% |
| 061 | 6 | 5.1% |
Site 003 had the most detected openings in the last 90 days: 7. One free watch covers every site here.
02 · Availability Outlook · Sep 18 – Sep 26, 2026 · of 74 monitored sites
Of the 666 tracked site-nights (Sep 18 – Sep 26, 2026): 157 open for online reservation · 507 reserved · 2 on sites not offered for online reservation (first-come, first-served or administrative).
Where the open windows are
76.4% of tracked site-nights are not currently open for online reservation. 157 of 666 remain open; here is where they are.
Load status
Sep 18 – Sep 26, 2026Not open online76.4%
Open site-nights157 / 666
Reserved (of online inventory)507 / 664
Weekday openings132
Weekend openings25
Of the open site-nights on mapped sites, 132 fall on weekdays and 25 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Sep 2026September holds the most room. 157 of 666 site-nights are still open there.
Holiday windows
Sites open per night · of 74 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 | 5 |
| 007 | 5 |
| 011 | 5 |
| 032 | 5 |
| 005 | 4 |
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 dateSun · Sep 20
The next bookable night is Sep 20. Campsite Sniper can watch later dates for you.
Stays and site detail
157 open site-nights across 62 sites at Coldwater Campground - Inyo NF (CA), from the same hourly snapshot as everything above.
Multi-night stays. 42 2-night, 29 3-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 20 at site 001.
RV length. Longest recorded site here is 43 ft. 64 sites take 25 ft, 13 sites take 35 ft, 3 sites take 40 ft.
Showing 60 of 62 sites with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 001 | 18 ft | None | 5 | 5 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24 |
| 007 | 33 ft | None | 5 | 5 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24 |
| 011 | 28 ft | None | 5 | 5 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24 |
| 032 | 23 ft | None | 5 | 5 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24 |
| 005 | 36 ft | None | 4 | 4 nights | Sep 21, Sep 22, Sep 23, Sep 24 |
| 009 | 26 ft | None | 4 | 4 nights | Sep 21, Sep 22, Sep 23, Sep 24 |
| 016 | 26 ft | None | 4 | 4 nights | Sep 21, Sep 22, Sep 23, Sep 24 |
| 031 | 29 ft | None | 4 | 4 nights | Sep 21, Sep 22, Sep 23, Sep 24 |
| 033 | 33 ft | None | 4 | 4 nights | Sep 21, Sep 22, Sep 23, Sep 24 |
| 053 | 29 ft | None | 4 | 4 nights | Sep 20, Sep 21, Sep 22, Sep 23 |
| 060 | 31 ft | None | 4 | 4 nights | Sep 21, Sep 22, Sep 23, Sep 24 |
| 061 | 37 ft | None | 4 | 3 nights | Sep 20, Sep 22, Sep 23, Sep 24 |
| 070 | 20 ft | None | 4 | 4 nights | Sep 20, Sep 21, Sep 22, Sep 23 |
| 072 | 26 ft | None | 4 | 4 nights | Sep 20, Sep 21, Sep 22, Sep 23 |
| 073 | 23 ft | None | 4 | 4 nights | Sep 20, Sep 21, Sep 22, Sep 23 |
| 079 | 30 ft | None | 4 | 4 nights | Sep 20, Sep 21, Sep 22, Sep 23 |
| 004 | 34 ft | None | 3 | 3 nights | Sep 22, Sep 23, Sep 24 |
| 008 | 34 ft | None | 3 | 3 nights | Sep 21, Sep 22, Sep 23 |
| 010 | 24 ft | None | 3 | 3 nights | Sep 21, Sep 22, Sep 23 |
| 017 | 43 ft | None | 3 | 3 nights | Sep 20, Sep 21, Sep 22 |
| 022 | 30 ft | None | 3 | 3 nights | Sep 21, Sep 22, Sep 23 |
| 023 | 33 ft | None | 3 | 3 nights | Sep 20, Sep 21, Sep 22 |
| 041 | 31 ft | None | 3 | 3 nights | Sep 20, Sep 21, Sep 22 |
| 043 | 31 ft | None | 3 | 3 nights | Sep 22, Sep 23, Sep 24 |
| 045 | 30 ft | None | 3 | 3 nights | Sep 20, Sep 21, Sep 22 |
| 046 | 29 ft | None | 3 | 3 nights | Sep 20, Sep 21, Sep 22 |
| 049 | 22 ft | None | 3 | 3 nights | Sep 21, Sep 22, Sep 23 |
| 050 | 33 ft | None | 3 | 2 nights | Sep 20, Sep 23, Sep 24 |
| 058 | 34 ft | None | 3 | 3 nights | Sep 21, Sep 22, Sep 23 |
| 059 | 34 ft | None | 3 | 2 nights | Sep 20, Sep 23, Sep 24 |
| 063 | 32 ft | None | 3 | 3 nights | Sep 21, Sep 22, Sep 23 |
| 069 | 33 ft | None | 3 | 2 nights | Sep 21, Sep 23, Sep 24 |
| 024 | 30 ft | None | 2 | 1 night | Sep 21, Sep 24 |
| 026 | 22 ft | None | 2 | 2 nights | Sep 21, Sep 22 |
| 029 | 38 ft | None | 2 | 2 nights | Sep 22, Sep 23 |
| 034 | 24 ft | None | 2 | 2 nights | Sep 21, Sep 22 |
| 035 | 23 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| 036 | 28 ft | None | 2 | 2 nights | Sep 23, Sep 24 |
| 038 | 33 ft | None | 2 | 2 nights | Sep 21, Sep 22 |
| 052 | 29 ft | None | 2 | 2 nights | Sep 23, Sep 24 |
| 055 | 35 ft | None | 2 | 2 nights | Sep 21, Sep 22 |
| 062 | 30 ft | None | 2 | 2 nights | Sep 22, Sep 23 |
| 065 | 33 ft | None | 2 | 2 nights | Sep 23, Sep 24 |
| 003 | 30 ft | None | 1 | 1 night | Sep 24 |
| 014 | 34 ft | None | 1 | 1 night | Sep 21 |
| 018 | 40 ft | None | 1 | 1 night | Sep 20 |
| 021 | 30 ft | None | 1 | 1 night | Sep 21 |
| 025 | 38 ft | None | 1 | 1 night | Sep 22 |
| 027 | 38 ft | None | 1 | 1 night | Sep 24 |
| 028 | 38 ft | None | 1 | 1 night | Sep 24 |
| 037 | 32 ft | None | 1 | 1 night | Sep 20 |
| 040 | 28 ft | None | 1 | 1 night | Sep 23 |
| 042 | 31 ft | None | 1 | 1 night | Sep 21 |
| 047 | 25 ft | None | 1 | 1 night | Sep 20 |
| 048 | 40 ft | None | 1 | 1 night | Sep 23 |
| 054 | 37 ft | None | 1 | 1 night | Sep 24 |
| 057 | 26 ft | None | 1 | 1 night | Sep 23 |
| 064 | 31 ft | None | 1 | 1 night | Sep 24 |
| 067 | 30 ft | None | 1 | 1 night | Sep 20 |
| 074 | 33 ft | None | 1 | 1 night | Sep 20 |
About Coldwater Campground - Inyo NF (CA)
Overview
Coldwater Campground is located high in the eastern Sierra Nevada Mountains near the town of Mammoth Lakes, California. The surrounding national forest provides many opportunities for family fun, outdoor recreation and relaxation. Hiking, fishing, road cycling and picnicking are just some of the favorite activities available to campers.
Recreation
Coldwater offers easy access to fishing for rainbow, brook and brown trout in Lake Mary. Major trailheads lead into the backcountry. Several interesting trails offer a variety of hikes, including the 5-mile Duck Pass Trail, which climbs the forested hillside behind the campground and passes several lakes before heading over Duck Pass to join the John Muir Trail.
Facilities
Campsites are organized into two loops, with sites fairly close together and near either creek. Pressurized water spigots and flush toilets are provided throughout the facility, and there are picnic tables, campfire rings and bear-proof food storage lockers at each campsite.
Natural Features
This campground sits in a pine forest at an elevation of 8,900 feet. Large and small boulders are strewn about the campground. Coldwater and Mammoth Creeks run alongside the campsites. Crystal clear Lake Mary, one of several lakes in the Mammoth Lakes Basin, is nearby.
The Eastern Sierras are abundant with wildlife, including black bear, mountain lions, mule deer, pine marten, pika and many species of fish and birds.
Nearby Attractions
Visitors can explore the magnificent John Muir Wilderness, which stretches 100 miles along the crest of the Sierra Nevada Mountains, a land of lofty snow-capped mountains, deep canyons and vast expanses of glacially-carved terrain. Hiking and horseback riding trails are abundant.
74 monitored sitesRVs up to 43 ftNo hookups74 shadedPets OKFire pitsMax party 6
Getting there
Coldwater Campground is 320 miles north of Los Angeles and 180 miles south of Reno. Follow U.S. Highway 395 to the junction of State Highway 203. Turn west on 203 and drive 7 miles through the town of Mammoth Lakes. Highway 203 becomes Main Street, then Lake Mary Road, which will lead to the Lakes Basin. Continue on Lake Mary Road to the Coldwater Campground cutoff on the left.
CA
BikingBoatingCampingFishingHikingHorseback RidingSwimming SiteWildlife Viewing
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-234290 · facility + sites
Photo gallery
Roll CS-234290 · Coldwater Campground - Inyo NF (CA) · CA12 frames · facility + sites
FAQ
How do I get a reservation at Coldwater Campground - Inyo NF (CA)?
Reservations for Coldwater Campground - Inyo NF (CA) are made through Recreation.gov. 76.4% of tracked site-nights are not currently open for online reservation; 157 of 666 remain open. Campsite Sniper has also detected 118 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 Coldwater Campground - Inyo NF (CA)?
Campsite Sniper detected 70 site-date openings at Coldwater Campground - Inyo NF (CA) in the last 7 days, 107 over 30 days and 118 over the last 90.
Which day of the week had the most detected openings at Coldwater Campground - Inyo NF (CA)?
Wednesday accounted for the largest share of the openings Campsite Sniper detected in the last 90 days: 45 of 118 (38.1%). Days reflect when Campsite Sniper first detected each opening, not when the change occurred upstream.
Can I get a multi-night stay at Coldwater Campground - Inyo NF (CA)?
29 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 20 at site 001. Confirm and book on Recreation.gov.
Which sites at Coldwater Campground - Inyo NF (CA) fit a 35-foot RV?
13 of the 74 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 43 ft.
Which month has the most availability at Coldwater Campground - Inyo NF (CA)?
September 2026, with 157 open site-nights in the current snapshot of 666.
How far ahead of a stay do openings appear at Coldwater Campground - Inyo NF (CA)?
Half of the openings Campsite Sniper detected appeared at least 8 days before the stay date; the middle 50% landed 5-12 days out. Campsite Sniper can monitor future changes for dates you select.
When is the next open date at Coldwater Campground - Inyo NF (CA)?
As of the Sep 18, 2026 snapshot: the next open date is Sun, Sep 20. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
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