Why Tongass National Forest stands out
The Tongass is most renowned for being Earth's largest remaining temperate rainforest, a perhumid coastal ecosystem of giant Sitka spruce, western hemlock, and western red cedar draped in moss and sustained by the region's persistent maritime rainfall. It is equally known for its island archipelago geography, with deep fjords, tidewater glaciers, and forested peaks of the Coast Mountains defining a landscape of inlets, channels, and wilderness islands. The forest also stands out for its unusually high concentration of wilderness; no other U.S. national forest contains as many designated wilderness areas or as much wilderness acreage as the Tongass.
Tongass National Forest history and protected-area timeline
The federal protection of the Tongass landscape began with President Theodore Roosevelt's 1902 proclamation creating the Alexander Archipelago Forest Reserve over islands including Chichagof, Kupreanof, Kuiu, Zarembo, and Prince of Wales. A second Roosevelt proclamation on 10 September 1907 formally established the Tongass National Forest, and in 1908 the two reserves were merged to cover most of Southeast Alaska. Further expansions under Roosevelt in 1909 and under President Calvin Coolidge in 1925 enlarged the forest to its present scale.
Aboriginal title became a defining legal chapter of the forest's history. After the Tongass was created, the Central Council of the Tlingit and Haida Indian Tribes of Alaska formed in 1935 to challenge federal authority over the land. In the resulting case, Tlingit and Haida Indians of Alaska v. United States, the courts recognized that Alaska Natives had established aboriginal title through exclusive use and occupancy from time immemorial. The case was eventually settled in 1968 with a payment of 7.5 million dollars, a value based on 1902 land prices without accumulated interest.
The twentieth century also brought industrial-scale logging shaped by long-term contracts with two pulp mills, the Ketchikan Pulp Company and the Alaska Pulp Corporation. Congressional and judicial interventions, including the National Forest Management Act of 1976, the Stein v. Barton salmon buffer rulings, the Tongass Timber Reform Act of 1990, and repeated battles over the Roadless Rule, repeatedly reshaped those contracts. In 2021 the Biden administration announced the end of large-scale old growth timber sales in the Tongass, redirecting management toward forest restoration, recreation, and non-commercial uses, and in January 2023 the 2001 roadless protections were fully restored.
Tongass National Forest landscape and geographic character
The Tongass landscape is defined by the meeting of sea, forest, and mountains along the Alaska Panhandle. The forest covers the heavily indented islands of the Alexander Archipelago, separated by twisting channels and deep fjords that were carved by glaciers and now fill with ocean water. Beyond the islands rise the peaks and icefields of the Coast Mountains, whose eastern ridges form the international border with British Columbia.
Tidewater glaciers pour from the mountains toward the sea, creating fjords like those of Misty Fjords and Tracy Arm. The underlying terrain is split between well-drained karst limestone areas with caves and springs and poorly drained granite uplands, a contrast that shapes where the largest trees grow. Upland zones host alpine tundra and icefields, while lower elevations support the dense old growth rainforest for which the Tanders and travelers.
Tongass National Forest ecosystems, habitats, and plant life
Vegetation across the Tongass is dominated by temperate rainforest in which western hemlock, Sitka spruce, and western red cedar form a multilayered canopy often choked with mosses and ferns. Because much of the terrain receives extremely high rainfall along the Pacific coast, the forest qualifies as perhumid, supporting unusually massive old growth trees, particularly in the karst landscapes where soil depth and drainage favor large cedars and spruces.
Roughly four in every ten acres of the forest are not forested at all, but consist of wetlands, rock, ice, snow, and non-forest alpine vegetation. The remaining forested area includes around five million acres of productive old growth, much of it preserved within nineteen designated wilderness areas such as Misty Fjords, Kootznoowoo, Tracy Arm-Fords Terror, and Stikine-LeConte. Disturbance regimes are part of the natural ecology: the region is regularly shaped by winter Takus windstorms that topple individual trees, as well as by landslides on steep slopes.
Tongass National Forest wildlife and species highlights
The Tongass supports a striking range of coastal and island wildlife. Five species of Pacific salmon return to its streams, joined by steelhead, and salmon in turn feed the forest's brown bears, black bears, and bald eagles. The endemic Alexander Archipelago wolf, mountain goats, ravens, and Sitka black-tailed deer populate the islands and mountains, while the rare Haida ermine, an endangered weasel subspecies, survives only in a few Tongass islands and on Canada's Haida Gwaii.
The marine environment around the Tongass is equally rich. Orcas and humpback whales feed in the channels, with sea lions, seals, sea otters, river otters, and porpoises common in coastal waters. Migratory birds, including Arctic terns, nest across the archipelago each summer. These combined terrestrial and marine populations make the Tongass one of the most important intact wildlife landscapes in North America.
Tongass National Forest conservation status and protection priorities
The Tongass is internationally significant for conservation because it protects the Earth's largest remaining temperate rainforest and a corresponding suite of old growth dependent species. Its nineteen designated wilderness areas collectively protect more wilderness acreage than those of any other U.S. national forest, and roughly seventy percent of the forest's most ecologically valuable big tree, low elevation old growth lies in reserves that are permanently off limits to harvest.
Conservation policy for the Tongass has been shaped by long-running conflicts over roadless area protections, old growth logging, salmon stream buffers, and land transfers to private native corporations. The 1990 Tongass Timber Reform Act ended an annual logging subsidy and closed additional forest to harvesting, after which both major pulp mills closed by the late 1990s. The 2021 decision to phase out large-scale old growth timber sales, followed by the 2023 restoration of the 2001 Roadless Rule, marked a major shift toward prioritizing climate resilience, carbon storage, recreation, and subsistence use over industrial timber extraction.
Tongass National Forest cultural meaning and human context
The Tongass is the ancestral homeland of three Alaska Native nations, the Tlingit, Haida, and Tsimshian, whose presence in the region long predates any federal designation or state boundary. The forest itself takes its name from a Tlingit group based near present-day Ketchikan, and the entire landscape is interwoven with indigenous place names, traditional use sites, and continuing subsistence practices such as salmon fishing, deer hunting, and cedar harvesting.
Alaska Native corporation inholdings also remain a defining cultural feature: lands conveyed under the Alaska Native Claims Settlement Act of 1971, including old growth tracts administered today by the Sealaska Corporation, sit within the broader national forest. The question of additional land selections through measures such as the Sealaska Lands Bill has generated sustained local debate, reflecting the complex overlap of indigenous rights, regional communities, and federal forest management in Southeast Alaska.
Top sights and standout views in Tongass National Forest
The Tongass is unusual among U.S. national forests for combining an immense geographic footprint with a globally rare ecosystem type, holding the largest tract of temperate rainforest left on Earth. Its combination of rugged islands, deep fjords, tidewater glaciers, and coastal old growth forest creates a landscape found nowhere else in the country at this scale.
The forest also stands out for its extraordinary concentration of wilderness, with nineteen designated wilderness areas exceeding five million acres, and for the depth of its human history, including Tlingit, Haida, and Tsimshian homelands, a major aboriginal title case, and a century of national debate over logging, road building, and the future of Southeast Alaska's communities.
Best time to visit Tongass National Forest
The Tongass is a year-round landscape, but the most rewarding seasons tend to be summer, when longer daylight, milder temperatures, and accessible ferry and cruise routes open up the islands for hiking, kayaking, fishing, and wildlife viewing. Summer is also when migratory birds are nesting, salmon runs are active, and visitor facilities such as the Mendenhall Glacier Visitor Center and the Southeast Alaska Discovery Center operate full programming.
Winter brings quieter conditions and a different scenic character shaped by snowfall, frozen inlets, and dramatic storm weather, though access becomes more limited and many services reduce their hours. Shoulder seasons offer a balance of fewer visitors and changing scenery, with spring freshening the forest and autumn deepening the character of the rainforest's evergreens against the season's first storms.
