Openings · last 7 days
0
01 · Detected Opening History · the openings record · file CS-234780
When Lost Prairie Group Site reopens
Lost Prairie Group Site'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
1
Only 1 opening 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 17, 2026 · of 1 monitored site
Of the 30 tracked site-nights (Sep 18 – Oct 17, 2026): 21 open for online reservation · 9 reserved.
Where the open windows are
30% of tracked site-nights are not currently open for online reservation. 21 of 30 remain open; here is where they are.
Load status
Sep 18 – Oct 17, 2026Not open online30%
Open site-nights21 / 30
Reserved (of online inventory)9 / 30
Weekday openings16
Weekend openings5
Of the open site-nights on mapped sites, 16 fall on weekdays and 5 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Oct 2026October holds the most room. 12 of 17 site-nights are still open there.
Holiday windows
Sites open per night · of 1 site| 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.
Availability
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| 1 | 21 |
This site currently has 21 site-nights available.
Next windows
As of Sep 18, 2026 snapshotNext open dateSun · Sep 20
Next open weekendFri · Oct 2
The next bookable night is Sep 20; the first open weekend starts Oct 2. Campsite Sniper can watch later dates for you.
Stays and site detail
21 open site-nights across 1 site at Lost Prairie Group Site, from the same hourly snapshot as everything above.
Multi-night stays. 3 2-night, 3 3-night, 1 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 20 at site 1.
RV length. Longest recorded site here is 35 ft. 1 site takes 25 ft, 1 site takes 35 ft.
All 1 site with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 1 | 35 ft | None | 21 | 12 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 +9 more |
About Lost Prairie Group Site
Overview
This site was originally a campground that has been converted to a group site with a 75-person capacity limit. There are 10 individual campsites. Sites #1-4 are back-in, paved surface sites suitable for tents and accommodating of trailers ranging up to 42 feet long depending on the site. Sites #5 -10 were originally walk-in sites less that 60 feet from the main area which can still be utilized for tents. Each individual site has a picnic table and fire pit. There is a paved parking area which can be used for RV parking with capacity for up to 6 RV's There are two double vault toilets, one behind site #1 and an accessible one near the parking area. Drinking water is available from a handpump well at the front of the campground.
Lost Prairie Group Site is located along the Over the Rivers and Through the Woods Scenic Byway and is nestled among the forest in the Cascades at an elevation of 3600 feet. Lost Prairie is only 15 minutes from the McKenzie River National Scenic Trail and Clear Lake. Numerous other trails and lakes are close by as well.
Reservations may be made up to 12 months in advance of arrival date by reserving online at RECREATION.GOV or by calling 877-444-6777.
Recreation
Lost Prairie Group Site is close to numerous hiking and boating opportunities. The McKenzie River trail, Iron Mountain, Echo Basin, Crescent Mountain and Browder Ridge trails are all within a fifteen minute drive. Clear Lake, Smith Reservoir and Suttle Lake are all close by and offer boating and fishing opportunities.
Facilities
One hand pump provides water and there is a newer double CXT toilet on site and an older outhouse near site 1. The creek can be accessed from the campground easily. The Lost Prairie Group Area was originally a campground that has been converted to a group site. If this area is not reserved as a group site, sites 1-4 are available on a first come, first serve basis. Below are the details on the individual sites within the group site; every site has a picnic table and fire pit/grill. There is a parking area originally designed for the walk in sites that can be used for RV parking; this area is suitable for 3 large or 5 small RV's, maximum 6 RV's. Site 1 Back-in, paved surface, 42 feet long, flat grade, suitable for tent or small camper Site 2 Back-in, paved surface, 30 feet long, slight grade, suitable for tent or small camper Site 3 Back-in, paved surface, 17 feet long, slight grade, suitable for tent or small camper Site 4 Back-in, paved surface, 15 feet long, slight grade, suitable for tent or small camper Site 5 -10 were originally walk-in sites. Walk is less than 60 feet. Tents may be set up in area where original sites were located. Parking area can be used for autos using walk-in area and RV's.
Campfire wood is not readily available at the park. Please plan to bring firewood or purchase from a nearby vendor. Linn County Parks staff, may occasionally, come through the park with firewood available for purchase.
Natural Features
The group site is nestled in the trees and Hackleman Creek flows through the back of the site. There are many wildflowers blooming in the prairie during the summer.
Nearby Attractions
Lost Prairie Group Site is close to numerous hiking and boating opportunities. The McKenzie River trail, Echo Basin, Crescent Mountain, and Browder Ridge trails are all within fifteen minutes drive. Clear Lake, Smith Reservoir and Suttle Lake are all close by and offer boating and fishing opportunities.
Clear Lake Resort is just down the road from Lost Prairie Group Site on Hwy 126 with a restaurant, boat rentals and excellent hiking. It is unique and well known for its clarity and standing dead trees created by the eruption of Sand Mountain. The West Cascades Scenic Byway and Santiam Pass-McKenzie Pass Scenic Byway are in close proximity to the site. Numerous short hikes to lakes, waterfalls and scenic vistas are along both routes.
Part of the historic Santiam Wagon Road, Lost Prairie is a natural meadow near Hackleman creek where a scouting party looking for a new wagon route across the Cascades became lost. After several days of frustration, one member of the party climbed a tall tree and spotted Sand Mountain to the east, regaining his bearings.
1 monitored siteRVs up to 35 ftNo hookups1 shadedPets OKFire pitsMax party 75
Getting there
From Sweet Home, OR, follow Highway 20 east for 38 miles and look for signs for the Lost Prairie Group Site.
4431 Highway 20 Sweet Home Or 97386541-967-3917
Camping
View on Recreation.gov ↗ Get directions ↗
FAQ
How do I get a reservation at Lost Prairie Group Site?
Reservations for Lost Prairie Group Site are made through Recreation.gov. 21 of 30 tracked site-nights are currently open (70%). Campsite Sniper has also detected 1 site opening 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 Lost Prairie Group Site?
Campsite Sniper detected 1 site-date opening 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 Lost Prairie Group Site?
3 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 1. Confirm and book on Recreation.gov.
Which sites at Lost Prairie Group Site fit a 35-foot RV?
1 of the 1 site that support RV analysis has a recorded maximum of 35 ft or more; the longest recorded is 35 ft.
Which month has the most availability at Lost Prairie Group Site?
October 2026, with 12 open site-nights in the current snapshot of 17.
When is the next open date at Lost Prairie Group Site?
As of the Sep 18, 2026 snapshot: the next open date is Sun, Sep 20 and the next open weekend starts Fri, Oct 2. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
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