Castle Flats Cabin

Star0
2 reviews
PO BOX 1328, PETERSBURG, AK, 99833, USA

Quick Facts

0

Price

$25 - $40/night

Booking

Reservable

Sites

1 campsites

Season

Open from April 29, ...

Cell

Unknown

Pets

Check Policy

Opens Petersburg Ranger District site

Official Website
Get Directions

Real-Time Availability

Select a month, then check for open campsites

January 2026

Real-Time Availability

Select a month, then check for open campsites

January 2026
Castle Flats Cabin
$25.00 - $40.00 / night
Campsite Fees
Peak season fees (April 29 to September 28, 2025) for the cabin are $40 per night. Non-peak season fees (September 29 to December 31, 2025) are $25...
Show more
Standard Site Fee$0.00
Hookup Site Fee$0.00
Premium Site Fee$0.00
Hike and Bike Site Fee$0.00
Group Site Fee$0.00
Food Storage Locker Fee$0.00

Get Notified When Available

We'll monitor this campground and alert you the moment sites become available.

Free with account · Checks every 2 minutes

150,000+ sites monitored · Email, SMS, or in-app notifications

Share this campground
Recreation Dot Gov
Provider
907-772-3871
Help improve this page
See something outdated or incorrect? Let us know!

What Campers Say

N/A

Limited Reviews

Based on 2 reviews

Most mentioned

location

"User reviews are mixed, with positive highlights about the secluded environment and general enjoyment of the facility, contrasted by complaints regarding mosquitos, gnats, and insufficient firewood."

Read all reviews

Campground Map

PO BOX 1328, PETERSBURG, AK, 99833, USA

Castle Flats Cabin

PO BOX 1328, PETERSBURG, AK, 99833, USA

Driving directionsFrom Petersburg, it is 16 miles by float plane or 30 miles by boat. A 15-foot tide is required for float plane access, and a 13-foot tide is required for boat access. At lower tides, there is up to a 2-mile hike along the tide flat to the cabin.
Accessible only by float plane or boat. Tidal conditions are critical, requiring a 13-15 foot tide depending on the mode of transport. At low tides, visitors must hike up to 2 miles across tide flats to reach the cabin.
Nearby places
Petersburg (16 miles by float plane, 30 miles by boat)
Nearby supplies
Supplies and amenities can be acquired in Petersburg, located 16 miles by float plane or 30 miles by boat.

Best Time to Camp at Castle Flats Cabin

Each season paints Castle Flats with its own dramatic palette. Spring awakens the skies as countless migratory birds transform the area into a birder's paradise. From April through May, steelhead surge upriver, followed by trophy trout that keep lines tight through October. By mid-August, the real spectacle begins as coho salmon return in shimmering schools, drawing both anglers and wildlife to the river's edge. Winter brings a crystalline quiet, with temperatures dipping below freezing and snow blanketing the landscape. Throughout the year, Southeast Alaska's signature mist and rain create an emerald world where moss drapes from towering trees and the forest floor springs to life.

Summer(Jun-Aug)
3.5 / 5

Peak season Apr–Sep with salmon runs and wildlife; heavy mosquitos can be a major drawback.

Fall(Sep-Nov)
4.0 / 5

Coho salmon runs mid‑Aug–mid‑Sept and good wildlife viewing make fall attractive.

Best
Spring(Mar-May)
4.0 / 5
Top 8% in AK

Steelhead Apr–May and migratory bird spectacle make spring a strong season.

Winter(Dec-Feb)
Not recommended

Open through Dec but winter activities not noted; likely harsh weather and limited access.

Planning Tips
  • Peak Season: April 29 to September 28, 2025.. Book 2-3 months ahead.
  • Operating Season: Open from April 29, 2025, to December 31, 2025.
  • Current Alerts: The invasive European Green Crab has been discovered in nearby areas and effort is underway to map its distribution.

About Castle Flats Cabin

Deep within the wilderness of Kupreanof Island, Castle Flats Cabin stands as your gateway to authentic Alaskan adventure. This remote hunter-style retreat, nestled in the heart of Tongass National Forest, rewards the intrepid traveler who arrives by float plane or boat—timing their journey with the rhythm of the tides. Here, where the Castle River meets the sea, anglers cast for silver salmon while eagles soar overhead, hunters track game through ancient forests, and hikers discover trails that wind through some of Alaska's most pristine landscapes.
Castle Flats Cabin is a hunter-style cabin facility offering basic accommodations for up to five people. It caters to visitors seeking primitive cabin lodging with opportunities for hiking, fishing, and wildlife observation.
Advertisement

Best Campsites

Curated by campers, for campers
Reveal picks

Reserving a campsite

Check-in
2:00 PM
Check-out
12:00 PM
Stay Limit
Maximum stay is 7 consecutive nights during peak season. During non-peak season, the stay limit is 10 consecutive nights.

Amenities available

Firewood available
Lodging and accommodations
Vault toilets
Cabin Lodging

Activities you can enjoy

Castle Flats Cabin provides abundant outdoor recreational opportunities. Activities include hiking, hunting, fishing, camping, boating, and wildlife viewing, making it a good choice for nature enthusiasts and adventurous visitors.
HikingThe Castle River Trail is an easy 1-mile trail leading to the Castle River Cabin, continuing through forest and muskeg for another half-mile. Wildlife sightings are common along the trail.
FishingFishing opportunities are seasonal, with steelhead available from April to May, trout from May to October, and coho salmon from mid-August to mid-September. Visitors may use the provided rowboat and oars.
BoatingA small rowboat and oars are available at the cabin. Visitors can bring their own small outboard motor. Tide conditions must be considered for crossing flats.
Wildlife viewingWildlife viewing opportunities include moose, deer, black bears, waterfowl, and grouse. The tide flats host many bird species during spring migration.
Winter Activities
Water Sports
Advertisement

Policies & Safety

Hazards & AlertsTidal flats can be challenging during low tides. High levels of Paralytic Shellfish Poisoning (PSP) have been recorded in the area. Wildlife such as bears require safety precautions.
Active AlertsThe invasive European Green Crab has been discovered in nearby areas and effort is underway to map its distribution.
No Potable WaterThis campground does not have potable water on-site. Bring all the water you need for drinking, cooking, and cleaning.

Weather at Castle Flats Cabin

Reviews

0.0
2 reviews
Limited Reviews
Limited Reviews
Castle Flats Cabin has limited reviews, placing it in the bottom % of campgrounds based on reviews
User reviews are mixed, with positive highlights about the secluded environment and general enjoyment of the facility, contrasted by complaints regarding mosquitos, gnats, and insufficient firewood.
Review Summaries
Based on 2 reviews

What Campers Love

Reviewers appreciated the cabin's location and seclusion, as well as the opportunities for fishing and hunting.
Based on 2 reviews

Common Concerns

Negative feedback includes remarks about the abundance of mosquitos and gnats, long distances from fishing areas, and unreliable firewood supply.
Based on 2 reviews

Pro Tips & Recommendations

Visitors are advised to bring ample bug repellent and consider the need for additional firewood. Checking tide tables is crucial for accessibility.
Based on 2 reviews

Seasonal Insights

Campers often highlight the importance of timing the stay with weather conditions and seasonal activities, such as fishing and wildlife migrations.
Based on 2 reviews

Camper Quotes

"Long way from the river and fishing, mosquitos and gnats were bad, very little firewood." - Dan H. "Great!" - Alfred W.
Based on 2 reviews

Site-Specific Reviews

Site-specific feedback includes remarks about site P10 and the surrounding area, noting both challenges and advantages, but no exhaustive details are provided.
Based on 2 reviews

0
0 review
1
2
3
4
5

Add your voice to the Outdoorithm community

Been to Castle Flats Cabin? Your review helps fellow campers discover what makes this place special—and what to expect.


Last updated January 13, 2026
Advertisement

Nearby Campgrounds

Campgrounds you may also like

Popular campgrounds in Alaska

Campgrounds
Tongass National Forest
Castle Flats Cabin