Castle River Cabin
Open year-round via Recreation.gov reservations. The facility is receiving minimal maintenance in 2026. Wood stove is present for heating; firewood is not guaranteed. No potable water is available. All garbage must be packed out.
Small Craft Advisory issued November 3 at 3:09AM AKST until November 4 at 5:00AM AKST by NWS Juneau AK
Southeast Alaska Inside Waters from Dixon Entrance to Skagway Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent the average of the highest one-third of the combined windwave and swell height. .TODAY...SE wind 15 kt increasing to 25 kt. Seas 3 ft increasing to 5 ft. Near ocean entrances, seas 5 ft building to 8 ft in the afternoon. .TONIGHT...SE wind 25 kt. Seas 6 ft, except 10 ft near ocean entrances. Rain. .WED...E wind 15 kt. Seas 4 ft, except 8 ft near ocean entrances. Rain. .WED NIGHT...SE wind 20 kt. Seas 4 ft, except 9 ft near ocean entrances. Rain. .THU...SE gale to 35 kt. Seas 9 ft. .FRI...SE gale to 35 kt. Seas 9 ft. .SAT...E wind 30 kt. Seas 9 ft.
Small Craft Advisory issued November 3 at 3:00AM AKST until November 4 at 3:00AM AKST by NWS Juneau AK
* WHAT...Southeast winds 20 to 30 kt with gusts up to 40 kt. Seas 8 to 13 ft expected for Southern Chatham Strait and Sumner Strait. * WHERE...Northern Chatham Strait, Southern Chatham Strait, Frederick Sound and Sumner Strait. * WHEN...From 3 PM this afternoon to 3 AM AKST Wednesday. * IMPACTS...Conditions will be hazardous to small craft.
Small Craft Advisory issued November 2 at 2:39PM AKST until November 3 at 5:00PM AKST by NWS Juneau AK
Southeast Alaska Inside Waters from Dixon Entrance to Skagway Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent the average of the highest one-third of the combined windwave and swell height. .TONIGHT...Light winds becoming E 10 kt. Seas 2 ft or less, except 5 ft near ocean entrances. .TUE...SE wind 20 kt. Seas 5 ft. Near ocean entrances, seas 5 ft building to 8 ft in the afternoon. .TUE NIGHT...SE wind 25 kt. Seas 6 ft, except 10 ft near ocean entrances. Rain. .WED...SE wind 20 kt. Gusts to 35 kt. Seas 4 ft, except 8 ft near ocean entrances. Showers. .WED NIGHT...SE wind 20 kt. Seas 5 ft, except 10 ft near ocean entrances. Showers. .THU...SE gale to 35 kt. Seas 10 ft. .FRI...SE gale to 35 kt. Seas 11 ft. .SAT...E wind 30 kt. Seas 11 ft.
About
Castle River Cabin sits on the west side of Duncan Canal at the mouth of the Castle River on Kupreanof Island. The surrounding terrain is predominantly flat-to-rolling old-growth forest and muskeg, home to moose, deer, black bears, waterfowl, and grouse. The modified A-frame cabin features a wood stove for heating, two double bunks, a sleeping loft accommodating up to seven guests, a wooden table and benches, a counter, and a deck. Fishing is a major draw, with steelhead trout available April through May, trout from May to October, and coho salmon from mid-August through mid-September. A rowboat with oars is located half a mile upstream via the Castle River Trail. The trail also connects to nearby Castle Flats Cabin, half a mile downstream. Hunting for waterfowl, grouse, moose, deer, and bear is available in designated seasons. Visitors must be entirely self-sufficient. There is no potable water; all drinking water must be packed in or treated from streams. All trash and food must be packed out. Firewood may be available but is not guaranteed and is for heating the cabin only, not outdoor campfires. The pit toilet outhouse is the only restroom facility.
Directions
From Petersburg, 16 air miles by float plane or 30 water miles by boat. A 16-foot tide is required for direct boat or float plane access. At lower tides, up to a 2-mile hike across muddy tide flats is necessary. Alternatively, access Castle Flats Cabin (requires 15-foot tide for float plane or 13-foot tide for boat) and hike the easy 0.5-mile Castle River Trail to the cabin.
Location
Amenities
| Water | No |
| Fires Allowed | No |
| Toilets | Yes |
| Dump Station | No |
| Wifi | No |
| Pets Allowed | — |
| Showers | No |
| Electric Hookups | — |
| Water Hookups | — |
| Sewer Hookups | — |
| Camp Store | No |
| Price | $25 |
Vehicle
| Max RV Length | — |
| Max Trailer Length | — |
| Big Rig Friendly | No |
| Pull Through Sites | No |
Contact
| Phone | +1 (907) 772-3871 |
Cell Service
| AT&T | None |
| Verizon | None |
| T-Mobile | None |
Availability
Photos
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