Openings · last 7 days
0
01 · Detected Opening History · the openings record · file CS-233030
When Portage Bay Cabin reopens
Portage Bay Cabin's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
1
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, 2026 – Mar 19, 2027 · of 1 monitored site
Of the 183 tracked site-nights (Sep 18, 2026 – Mar 19, 2027): 161 open for online reservation · 22 reserved.
Where the open windows are
12% of tracked site-nights are not currently open for online reservation. 161 of 183 remain open; here is where they are.
Load status
Sep 18, 2026 – Mar 19, 2027Not open online12%
Open site-nights161 / 183
Reserved (of online inventory)22 / 183
Weekday openings93
Weekend openings68
Of the open cabin-nights on mapped sites, 93 fall on weekdays and 68 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Mar 2027December holds the most room. 31 of 31 site-nights are still open there.
Holiday windows
Sites open per night · of 1 cabin| 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 | |
| Thanksgiving | THU Nov 26 | 1 | Open |
| FRI Nov 27 | 1 | Open | |
| SAT Nov 28 | 1 | Open | |
| Christmas | THU Dec 24 | 1 | Open |
| FRI Dec 25 | 1 | Open | |
| New Year | THU Dec 31 | 1 | Open |
| FRI Jan 1 | 1 | Open |
Labor Day: no online availability on any tracked night. Thanksgiving: 1 cabin is available for the complete three-night stay. Christmas: 1 cabin is available for the complete two-night stay. New Year: 1 cabin is available for the complete two-night stay.
Availability
Most open cabin-nights · tracked window| Cabin | Open cabin-nights |
|---|---|
| P25 | 161 |
This cabin currently has 161 cabin-nights available.
Next windows
As of Sep 18, 2026 snapshotNext open dateFri · Sep 18
Next open weekendFri · Sep 18
The next bookable night is Sep 18; the first open weekend starts Sep 18. Campsite Sniper can watch later dates for you.
Stays and site detail
161 open cabin-nights across 1 cabin at Portage Bay Cabin, from the same hourly snapshot as everything above.
Multi-night stays. 3 2-night, 3 3-night, 2 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 20 at site P25.
All 1 cabin with current availability
| Cabin | Max RV | Hookups | Open cabin-nights | Longest run | Dates |
|---|---|---|---|---|---|
| P25 | Not recorded | None | 161 | 135 nights | Sep 18, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 9 +149 more |
About Portage Bay Cabin
Overview
The Portage Bay Cabin is located on the eastern shore of Portage Bay on Kupreanof Island, due east of Stop Island. It provides access to scenic views as well as a variety of recreational opportunities. Visitors to the area enjoy fishing, hiking and wildlife viewing.
It is accessible by boat or float plane only. Guests are responsible for their own travel arrangements and safety, and must bring several of their own amenities.
Recreation
There is excellent halibut fishing in the mouth of Portage Bay. Coho, pink salmon, steelhead and trout fishing are available in the nearby Portage Creek. Hunting for black bears, waterfowl and grouse is also available as per state or federal hunting regulations; click here for more information from the Alaska Department of Fish and Game.
The primitive Portage Mountain Loop Trail connects the cabin with Petersburg Lake Cabin and Salt Chuck East Cabin through Goose Cove, south of the bay. The trail is especially primitive over to Petersburg Lake and is seldom used due to the level of difficulty. Sections of the trail are flooded by beaver ponds.
Facilities
The single-level, hunter-style cabin has four single wooden bunks and can accommodate up to six people. It is equipped with a table, benches and a clean-burning oil heater. An outhouse with a pit toilet is provided.
Water for drinking, cooking and cleaning is not provided at the cabin. The nearest water source is a small creek 100 feet south of the cabin. Water taken from any outdoor source should be treated or boiled before consumption. Guests are encouraged to bring drinking water if possible.
Guests will need to bring their own sleeping bags and pads, cook stove and cooking gear, towels, food, clothing, fire starter and garbage bags, among other necessities. Guests are advised to bring enough kerosene or No. 1 heating oil for the oil heater. It burns at a rate of approximately one gallon per day. Oil is not supplied at the cabin.
Click here for more cabin details and maps.
Natural Features
The cabin was originally built as an administrative site for Forest Service timber layout crews, but was converted to a recreation cabin in 1987. It sits back from the rocky eastern shore of Portage Bay in southeastern Alaska. The surrounding terrain is hilly along the east and flat and rolling south and west of the bay. Portage Mountain rises 3,577 feet in the background.
1 monitored cabinNo hookups1 shadedMax party 6
Getting there
From Petersburg the journey is 15 miles by float plane or 25 miles by boat. Refer to USGS topographic map Petersburg D4. Petersburg D3. Sumdum A4 may also be helpful. Maps are available online or by calling the Petersburg Ranger District at (907) 772-3871. Float plane or boat access can only occur at certain stages of the tide. Please check current conditions prior to your trip. Click here for more information.
Po Box 1328, Petersburg, AK 99833907-772-3871
BoatingCampingFishingHikingHuntingWildlife Viewing
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-233030 · facility + sites
Photo gallery
Roll CS-233030 · Portage Bay Cabin · Petersburg AK9 frames · facility + sites
FAQ
How do I get a reservation at Portage Bay Cabin?
Reservations for Portage Bay Cabin are made through Recreation.gov. The current snapshot shows substantial availability: 161 of 183 tracked site-nights are open (88%), though availability can change. 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 10:18 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 Portage Bay Cabin?
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 Portage Bay Cabin?
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 P25. Confirm and book on Recreation.gov.
Which month has the most availability at Portage Bay Cabin?
December 2026, with 31 open site-nights in the current snapshot of 31.
When is the next open date at Portage Bay Cabin?
As of the Sep 18, 2026 snapshot: the next open date is Fri, Sep 18 and the next open weekend starts Fri, Sep 18. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
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