How much does camping cost at Castle Flats Cabin?

Camping fees at Castle Flats Cabin range from $25-$40/night. Prices may vary by site type (standard, hookup, premium) and season. Book online to see exact pricing for your dates.

Is Castle Flats Cabin first-come first-served or reservation?

Castle Flats Cabin accepts online reservations. We recommend booking in advance, especially during peak season (typically summer weekends). Use campsite alerts to get notified when spots become available.

Can I see photos of campsites at Castle Flats Cabin before I book?

Yes! Castle Flats Cabin has 8 campsite photos on Outdoorithm, contributed by campers who've stayed there. Browse real photos of individual sites to see what to expect before you reserve. You can also add your own photos after your trip to help the next family plan theirs.

What is the best time to visit Castle Flats Cabin?

Castle Flats Cabin is open April 29 to September 28, 2025.. The best time to visit depends on your preferences—summer offers the warmest weather and most activities, while spring and fall provide fewer crowds and milder temperatures. Check current conditions before your trip.

Are there showers at Castle Flats Cabin?

Castle Flats Cabin does not have shower facilities. Plan accordingly—nearby alternatives may include day-use areas or towns.

How many campsites does Castle Flats Cabin have?

Castle Flats Cabin has 1 campsites. Sites vary in size, privacy, and amenities. Check availability online to find the best site for your needs.

Are dogs allowed at Castle Flats Cabin?

Pets are not allowed at Castle Flats Cabin. This policy helps protect local wildlife and other campers. Consider nearby pet-friendly campgrounds if traveling with animals.

What amenities are available at Castle Flats Cabin?

Castle Flats Cabin offers: Restrooms. See our detailed campground page for the full list of facilities and features.

What activities can I do at Castle Flats Cabin?

Popular activities at Castle Flats Cabin include Hiking, Fishing, Boating, Wildlife Viewing. The surrounding area offers plenty of outdoor recreation opportunities for all skill levels.

Castle Flats Cabin

Q: Can I have a campfire at Castle Flats Cabin?

Fire policies at Castle Flats Cabin: Firewood provided is only for cabin heating. Outdoor campfires require collection of dead and down wood from the forest.. Always check current fire restrictions before your trip, as conditions change seasonally.

2 reviews

PO BOX 1328, PETERSBURG, AK, 99833, USA

Featured in:Mountain Camping Alaska

Real-Time Availability

Select a month, then check for open campsites

Quick Facts

Price

$25 - $40/night

Booking

Reservable

Sites

1 campsites

Season

Open from April 29, ...

Cell

Unknown

Pets

Check Policy

Book on Petersburg Ranger District Set up a cancellation alert Official Website

Get Directions

Only 1 sites — this campground fills fast. Set up a free alert.

Real-Time Availability

Select a month, then check for open campsites

Quick Facts

Price

$25 - $40/night

Booking

Reservable

Sites

1 campsites

Season

Open from April 29, ...

Cell

Unknown

Pets

Check Policy

Book on Petersburg Ranger District Set up a cancellation alert Official Website

Get Directions

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...

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

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Recreation Dot Gov

Provider

907-772-3871

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What Campers Say

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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."

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Campground Map

PO BOX 1328, PETERSBURG, AK, 99833, USA

Castle Flats Cabin

PO BOX 1328, PETERSBURG, AK, 99833, USA

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.

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.

Best Time to Camp at Castle Flats Cabin

Fall delivers the best fishing and wildlife viewing with fewer bugs and smaller crowds. Late August through September brings coho and late sockeye salmon runs, drawing whales, seals, bears, and eagles to feed along the fjord and flats. Temperatures run 35-50°F with crisp conditions and better windows for floatplane access than summer. Spring sees migratory birds and steelhead runs from April through May. Winter brings snow and below-freezing temperatures. Year-round, expect Southeast Alaska's signature rain and mist.

Best

Fall(Sep-Nov)

4.0 / 5

Top 21% in AK

Fall best for fishing and wildlife viewing with fewer bugs and good salmon runs.

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: High levels of Paralytic Shellfish Poisoning (PSP) have been recorded in this area

About Castle Flats Cabin

Castle Flats Cabin sits on southeastern Kupreanof Island in Tongass National Forest, accessible only by floatplane or boat. The single remote cabin sleeps up to five people and costs $25-40 per night. You'll need to time your arrival with the tides. Access depends on water levels at the landing.

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.

Weather and SeasonsFall delivers the best fishing and wildlife viewing with fewer bugs and smaller crowds. Late August through September brings coho and late sockeye salmon runs, drawing whales, seals, bears, and eagles to feed along the fjord and flats. Temperatures run 35-50°F with crisp conditions and better windows for floatplane access than summer. Spring sees migratory birds and steelhead runs from April through May. Winter brings snow and below-freezing temperatures. Year-round, expect Southeast Alaska's signature rain and mist.

ElevationPerched at sea level where river meets ocean, Castle Flats offers the rare combination of saltwater proximity and freshwater access without the challenges of altitude. This coastal positioning creates ideal conditions for both marine and riverine adventures, while gentle terrain makes exploration accessible for visitors of all abilities.

Natural Features and SceneryThe cabin sits where old-growth forest meets tidal flats and muskeg. Sitka spruce and western hemlock tower overhead, while the nearby Duncan Canal. Actually a glacially-carved fjord. Brings whales and seals past twice daily with the tides. The Castle River winds through the landscape toward the sea. When the tide retreats, the flats become feeding grounds for moose, black bears, and waterfowl. Sitka black-tailed deer appear at forest edges morning and evening.

Geological RegionCastle Flats rests in a remarkable corner of southeastern Kupreanof Island, where the forces of ice, water, and time have sculpted a landscape of extraordinary diversity. Part of the vast Tongass National Forest—America's largest temperate rainforest—this region showcases the dramatic meeting of land and sea. The nearby Duncan Canal, actually a fjord carved by ancient glaciers, creates a marine highway for whales and seals, while the expansive tidal flats reveal their secrets twice daily with the ebb and flow. This dynamic environment, where coastal waters lap against old-growth forests and muskegs stretch toward distant mountains, represents the very essence of Southeast Alaska's geological wonder.

Best Campsites

Curated by campers, for campers

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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.

Guests Allowed Per Site

The cabin accommodates up to 5 people.

Groups

Group camping is not supported at this facility.

Tents

Tents are not allowed

RV vehicles

RV vehicles are not allowed

Primitive

Primitive camping is not allowed

Reservable

Reservations are allowed

Site layoutThe cabin has bunks for five people, plus a table and benches. Reviews warn about mosquitos and gnats. Bring serious bug repellent. Firewood availability has been inconsistent according to visitor reports, so plan to supplement what's provided.

Reservation PlatformsReservations can be made via Recreation.gov up to 180 days in advance or on the day of arrival.

Walk-in AvailabilityReservations are required due to remote access challenges; walk-up sites are not available.

Cancellation PolicyReservations can be modified once free of charge, but subsequent changes require cancellation and rebooking. Late cancellations for cabins (less than 14 days prior to arrival) incur a $10 fee and forfeit the first night's recreation use fee.

AccessibilityNo specific accessibility features are mentioned for Castle Flats Cabin.

Site SizeThe cabin is designed to accommodate up to five people. Individual bunks are provided for sleeping arrangements.

PrivacyThe cabin is secluded and situated on southeastern Kupreanof Island, offering privacy amidst old-growth forest and muskeg.

Total Campsites1 campsites

Recommended SitesEnsure tide conditions are favorable before accessing the cabin. Bring all necessary supplies, including drinking water, life jackets, heating oil, and outdoor gear.

Need help booking Castle Flats Cabin?

Reservation tips, booking windows, and free cancellation alerts.

Recreation.gov Guide

Booking tips & windows

When to Book

Find your booking window

Cancellation Alerts

Free alerts for this campground

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.

Hiking

Fishing

Boating

Wildlife viewing

Winter Activities

Water Sports

Planning your trip?Check out our camping packing checklist

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 AlertsHigh levels of Paralytic Shellfish Poisoning (PSP) have been recorded in this area

No Potable WaterThis campground does not have potable water on-site. Bring all the water you need for drinking, cooking, and cleaning.

Fire PolicyFirewood provided is only for cabin heating. Outdoor campfires require collection of dead and down wood from the forest.

Emergency ServicesEmergency services are available in Petersburg, which is approximately 16 miles by float plane or 30 miles by boat.

Trash & RecyclingAll trash and food must be packed out by visitors. There are no trash collection or recycling facilities on-site.

Water FeaturesSituated adjacent to Castle River tide flats and Duncan Canal.

Camp HostPetersburg Ranger District can assist with inquiries. Missing or damaged items should be reported to them at 907-772-3871.

Weather at Castle Flats Cabin

Trip Planning Tools

Set an AlertGet notified when sites open up Check WeatherHistorical weather data Gear for This TripMatched gear recommendations Packing ListCustomizable checklist

Reviews

From Booking Sources

0.0

2 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

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