A gray 4x4 Sprinter with a roof rack on a two-track through a wildflower meadow, cloud sitting on the mountains behind.

Forest Service cabin or lookout

Portage Bay Cabin

Forest Service cabin or lookout in Tongass National Forest, Petersburg County, Alaska. 99 feet. 14.7 miles from Kupreanof.

Managed by
Forest Service Tongass National Forest
Elevation
99 ft USGS elevation model, at the mapped point
Sites
1 1 cabin non-electric
Hookups
None listed
Reservations
Recreation.gov

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.

The description, directions and fees are the Forest Service’s own words, from its record on Recreation.gov.

What people do here

  • boating
  • camping
  • fishing
  • hiking
  • hunting
  • wildlife viewing

The land around Portage Bay Cabin

The ringed pin is this cabin or lookout; the others are its nearest neighbours. Switch on forest roads or BLM routes to see the way in.

Interactive map. Drag to pan, scroll or pinch to zoom, and select any point to see which agency manages the land. Arrow keys pan and the plus and minus keys zoom when the map has focus. A list of every state with its share of federal land is on the Explore page.

Map layers

Layers
Base map
Legend

Federal land, by managing agency

  • Bureau of Land Management (BLM)
  • US Forest Service (USFS)
  • National Park Service (NPS)
  • US Fish and Wildlife (USFW)
  • Bureau of Reclamation (USBR)
  • Department Of Defense (DOD)
  • Bureau of Indian Affairs (BIA)
  • Other Federal
  • State
  • Local
  • Alaska Native Lands (Patented or Interim Conveyed)
  • Alaska Native Allotment

Federal campgrounds, by agency

  • Forest Service
  • Bureau of Land Management
  • National Park Service
  • Army Corps of Engineers
  • Reclamation, Fish and Wildlife and others

State and local land (USGS PAD-US)

  • State land
  • County and city land
  • Regional agency or district
  • Land trust or conservancy

Gaps with no tint inside public land are private parcels, often old mining claims and homesteads. They are not open to the public.

Dashed clay lines on the base map are unpaved tracks from OpenStreetMap. They show what exists on the ground, not what is legal to drive.

Select any point to see who manages the land.

Boundaries are approximate and land status changes. This map is a planning aid, not a survey or a statement of access. Confirm routes, closures and camping rules with the managing office.

Source: Recreation Information Database (Recreation.gov), record updated February 25, 2026. Elevation from the USGS 3D Elevation Program. Seasons, fees, water and fire rules change; the managing office has the final word.