Openings · last 7 days
2
Booking reality
Campsite Sniper detected 2 site openings here in the last 7 days
01 · Detected Opening History · the openings record · file CS-251581
When Mallard Marsh Campground reopens
Mallard Marsh Campground's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
21
Openings · last 90 days
26
Only 26 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 – Sep 26, 2026 · of 14 monitored sites
Of the 126 tracked site-nights (Sep 18 – Sep 26, 2026): 72 open for online reservation · 21 reserved · 33 on sites not offered for online reservation (first-come, first-served or administrative). Of the facility's 14 monitored sites, 12 can be reserved online and 2 are first-come, first-served.
Where the open windows are
42.9% of tracked site-nights are not currently open for online reservation. 72 of 126 remain open; here is where they are.
Load status
Sep 18 – Sep 26, 2026Not open online42.9%
Open site-nights72 / 126
Reserved (of online inventory)21 / 93
Weekday openings48
Weekend openings24
Of the open site-nights on mapped sites, 48 fall on weekdays and 24 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Sep 2026September holds the most room. 72 of 126 site-nights are still open there.
Holiday windows
Sites open per night · of 14 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 | 6 |
| 002 | 6 |
| 003 | 6 |
| 004 | 6 |
| 005 | 6 |
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 dateMon · Sep 21
Next open weekendFri · Sep 25
The next bookable night is Sep 21; the first open weekend starts Sep 25. Campsite Sniper can watch later dates for you.
Stays and site detail
72 open site-nights across 12 sites at Mallard Marsh Campground, from the same hourly snapshot as everything above.
Multi-night stays. 12 2-night, 12 3-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 21 at site 001.
RV length. Longest recorded site here is 40 ft. 14 sites take 25 ft, 12 sites take 35 ft, 4 sites take 40 ft.
All 12 sites with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 001 | 36 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 002 | 40 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 003 | 40 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 004 | 36 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 005 | 40 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 006 | 30 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 007 | 40 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 009 | 36 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 010 | 30 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 012 | 36 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 014 | 36 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
| 015 | 36 ft | None | 6 | 6 nights | Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26 |
About Mallard Marsh Campground
Overview
Mallard Marsh Campground is located along the reed-lined shores of Hosmer Lake a popular destination for fly-fishing, paddling and birding.
Recreation
Nearby Hosmer Lake offers opportunities for fly fishing and boating as well as spectacular views. There are also trails and other opportunities for hiking and horseback riding nearby.
Facilities
This facility has vault toilets and each site is equipped with a picnic table and fire pit with grill. Please note campers will need to bring their own water supply.
Natural Features
At the north end of Hosmer Lake, water drains into a porous rim of lava. Hosmer is a “fly fishing only” lake well known for its breath taking views of Mt. Bachelor, South Sisters, Broken Top as well as wildlife viewing and the big Atlantic salmon, brook trout and rainbows that are quite visible in this shallow clear lake. The best way to experience this lake is by canoe or kayak as shore access is limited due to marshy vegetation.
Nearby Attractions
Visitors enjoy traveling the Cascade Lakes Scenic Byway which climbs 66-miles through the Cascade Range, weaving past snow-capped peaks and alpine lakes.
14 monitored sites2 FCFS sitesRVs up to 40 ftNo hookupsPets OKFire pitsMax party 6
Getting there
From Bend, travel 35.5 miles southwest on Cascade Lakes Hwy (46), then 1.3 miles east on Forest Road 4625. South Campground will come up on the right side first and then Mallard Marsh.
63095 Deschutes Market Road, Bend, OR 97701541-323-1746
Camping
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-251581 · facility + sites
Photo gallery
Roll CS-251581 · Mallard Marsh Campground · Bend OR12 frames · facility + sites
FAQ
How do I get a reservation at Mallard Marsh Campground?
Reservations for Mallard Marsh Campground are made through Recreation.gov. 72 of 126 tracked site-nights are currently open (57.1%). Campsite Sniper has also detected 26 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 Mallard Marsh Campground?
Campsite Sniper detected 2 site-date openings at Mallard Marsh Campground in the last 7 days, 21 over 30 days and 26 over the last 90.
Can I get a multi-night stay at Mallard Marsh Campground?
12 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 21 at site 001. Confirm and book on Recreation.gov.
Which sites at Mallard Marsh Campground fit a 35-foot RV?
12 of the 14 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 40 ft.
Which month has the most availability at Mallard Marsh Campground?
September 2026, with 72 open site-nights in the current snapshot of 126.
When is the next open date at Mallard Marsh Campground?
As of the Sep 18, 2026 snapshot: the next open date is Mon, Sep 21 and the next open weekend starts Fri, Sep 25. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
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 Mallard Marsh Campground. One watch covers every matching online-reservable 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.
Alerts monitor online-reservable inventory only; first-come, first-served sites are not included.