Rocky Pass

The Rocky Pass Inventoried Roadless Area covers 78,163 acres within the Tongass National Forest, occupying a section of Kuiu Island and the adjacent tidal passage between Kuiu and Kupreanof Islands in Southeast Alaska. Named landmarks within the area include Point Hamilton, McNaughton Point, Salt Point, Beck Island, Horseshoe Island, and Hound Island, marking the complex island-strewn geography of the inner channels. The tidal passage of Rocky Pass connects the Mud Creek-Rocky Pass headwaters system to Dakaneek Bay, Stedman Cove, Mud Bay, and Devils Elbow — a chain of shallow coastal features draining into Keku Strait. Six named streams — Irish Creek, Tunehean Creek, Keku Creek, Big John Creek, Hamilton Creek, and Mud Creek — drain the island's interior slopes to the tidal corridor. The area's hydrology is rated major in significance, reflecting the importance of these connected freshwater and estuarine systems.

The forest cover reflects the wet maritime character of Southeast Alaska's inner island chain. Western hemlock and Sitka spruce dominate the canopy along lower and mid-elevation slopes, with a dense understory characteristic of maritime old-growth forest. Devil's club (Oplopanax horridus) forms shoulder-high thickets along stream banks and moist forest floors, its large spiny leaves a defining feature of the riparian zone. Yellow skunk cabbage (Lysichiton americanus) carpets wet ground along drainage margins in early spring. Oval-leaf huckleberry (Vaccinium ovalifolium) and red huckleberry (Vaccinium parvifolium) fill the mid-story in forest gaps, providing summer fruit and fall cover. On drier upland sites, fairy slipper (Calypso bulbosa) blooms in early summer, its single magenta flower supported by a single basal leaf. Roundleaf sundew (Drosera rotundifolia) occupies the wettest bog margins, capturing insects to supplement nutrient-poor growing conditions.

The interconnected freshwater and tidal habitats of Rocky Pass support a diverse assemblage of species. Coastal cutthroat trout (Oncorhynchus clarkii) occupy the cold freshwater streams and estuarine transition zones of the drainage network. Bald eagle (Haliaeetus leucocephalus) concentrates along the shoreline and tidal flats of Dakaneek Bay and Mud Bay, foraging on fish in the tidal zone. American black bear (Ursus americanus) ranges across the forest and stream margins; American mink (Neogale vison) forages along creek margins and in the intertidal zone. In the waters of Keku Strait adjacent to Rocky Pass, sea otter (Enhydra lutris, IUCN Endangered) forages in shallow subtidal habitat, and humpback whale (Megaptera novaeangliae) moves through the channel. Rough-skinned newt (Taricha granulosa) occupies the wet forest floor and pond margins of the freshwater system. Portions of this area fall within the potential range of several federally listed species; see the Conservation section for details.

The Big John Bay Trail (Trail 21465, 1.8 miles) follows its namesake drainage from the bay margin through lowland spruce forest. The Hamilton Creek Trail (Trail 21463, 1.1 miles) runs along Hamilton Creek on a compacted surface. Moving along these trails, a visitor transitions from open tidal margins — where eagles work the shoreline and mink tracks appear in estuarine mud — to the dense interior forest, where devil's club thickets close in along the stream bank and the sound of moving water marks each tributary crossing.

The Rocky Pass Inventoried Roadless Area encompasses 78,163 acres on Kuiu Island, between Keku Strait and Sumner Strait in the Alexander Archipelago of Southeast Alaska. The island takes its name from the Kooyu Kwáan — the Tlingit qwaan whose territory encompassed Kuiu — and humans have inhabited the island for at least 5,000 years [1]. By the time European explorers arrived in the eighteenth century, the Kooyu Kwáan Tlingit had established villages at bays along the island's coast, including at Tebenkof, Security, Saginaw, and Port Camden — bays now within or adjacent to the Rocky Pass area [1]. Like the broader Tlingit nation, the Kooyu Kwáan organized their society around named houses and clans, managed exclusive fishing territories, and maintained trade networks linking coastal resources to the interior [2]. Rocky Pass itself, a tidal channel connecting Keku Strait to Point Camden, would have served as a navigational corridor for the cedar canoes of those trade networks.

The nineteenth century brought compounding disruptions to Tlingit communities throughout Southeast Alaska. Introduced diseases — smallpox and influenza — decimated Tlingit populations on Kuiu Island and across the region [1]. The Kuiu Tlingit who survived relocated to Kake village on Kupreanof Island, across Keku Strait from their homeland. The same strait that had defined the eastern edge of Kooyu Kwáan territory became, in the American period, a commercial corridor. In 1890, the Astoria & Alaska Packing Company built a salmon cannery at Pillar Bay on Kuiu Island's west coast; the site was rebuilt and operated until 1930, cycling through multiple owners as cannery economics fluctuated [1]. Between 1878 and 1949, 134 salmon canneries were built across Southeast Alaska, representing a period of intensive industrial extraction of the region's salmon runs [5].

Timber harvest came to the Alexander Archipelago alongside commercial fishing. In Alaska, handlogging had been the dominant practice since American acquisition, with most timber cut locally for mine timbers, fish trap construction, cannery buildings, and dock pilings [4]. The Alexander Archipelago Forest Reserve was established in August 1902 by presidential proclamation, bringing Kuiu Island's forests under federal oversight [4]. By 1909, following the consolidation of the reserve system, nearly all commercial timber in Southeast Alaska had been incorporated into the Tongass National Forest, with annual regional harvests averaging about 15 million board feet [3]. Timber harvest in the Keku Strait region continued through much of the twentieth century, with Kuiu Island forests supplying logs to mills processing timber for Japanese export markets [3].

The Tongass National Forest was formally established by presidential proclamation on September 10, 1907, under President Theodore Roosevelt [4]. On July 1, 1908, the Tongass absorbed the Alexander Archipelago National Forest, creating a combined unit of 6,756,362 acres [4]. The Rocky Pass Inventoried Roadless Area, spanning the tidal passage and stream drainages of the Mud Creek-Rocky Pass watershed on Kuiu Island, is today protected under the 2001 Roadless Area Conservation Rule.

Vital Resources Protected

Cold-Water Stream Integrity and Estuarine Connectivity

The Rocky Pass Inventoried Roadless Area maintains six named stream systems — Irish Creek, Tunehean Creek, Keku Creek, Big John Creek, Hamilton Creek, and Mud Creek — in their undisturbed condition as they drain from Kuiu Island's interior to the tidal passage of Rocky Pass and adjacent Dakaneek Bay, Mud Bay, and Stedman Cove. The roadless condition preserves intact riparian buffers along each drainage, keeping stream banks stable and water temperatures cold enough to support coastal cutthroat trout in the freshwater-estuarine transition zone. The continuous stream-to-estuary connectivity — from interior headwaters through the tidal channel to Keku Strait — sustains the feeding and migration habitat of species dependent on undisturbed freshwater-marine linkages.

Interior Forest Habitat and Old-Growth Structure

Across 78,163 acres of island terrain, the absence of roads preserves the structural complexity of the old-growth forest interior, including the multilayered canopy, abundant coarse woody debris, and moisture-rich understory conditions characteristic of unlogged maritime forest. The dense riparian thickets of devil's club and the bog-margin communities supporting roundleaf sundew persist only where soil disturbance and drainage alteration are absent. Fairy slipper, a mycoheterotrophic orchid dependent on specific soil fungal associations, is documented in this area and is particularly sensitive to soil disturbance, logging, and habitat modification.

Marine-Terrestrial Interface and Sea Otter Habitat

The tidal passage of Rocky Pass and the adjacent bays — Dakaneek Bay, Mud Bay, and Stedman Cove — form a coastal interface where terrestrial and marine systems connect. Sea otter (Enhydra lutris, IUCN Endangered) forages in the shallow subtidal zone of these enclosed waters, which receive their freshwater input from the undisturbed streams of the Rocky Pass watershed. Clean, low-sediment freshwater delivery from the roadless upland maintains the water clarity and benthic habitat quality that supports the shellfish and urchin populations on which sea otters depend. Humpback whale also moves through Keku Strait adjacent to this area, using these productive coastal channels as feeding habitat.

The area supports one federally listed species: Short-tailed albatross (Phoebastria albatrus, Endangered), which forages in the offshore and nearshore marine environment of Southeast Alaska.

Potential Effects of Road Construction

Sedimentation and Stream Habitat Degradation

Road construction on the Kuiu Island slopes draining to Rocky Pass would expose mineral soil through cut-and-fill operations, generating chronic sediment input to the six named stream systems of the watershed. Fine sediment settles into stream gravel, reducing the intergravel oxygen flow that coastal cutthroat trout and their benthic prey require. Once introduced, elevated sedimentation is difficult to reverse because it persists as long as road surfaces and cut banks remain exposed and eroding.

Estuarine Water Quality and Marine Connectivity Disruption

The Rocky Pass tidal passage and adjacent bays receive direct freshwater input from stream systems that road construction would disturb. Increased sediment and altered hydrology entering Dakaneek Bay or Mud Bay would degrade the water clarity and substrate quality on which sea otters depend for foraging. Road construction adjacent to tidal areas can also alter estuarine hydrology through fill placement, changing tidal circulation in the enclosed bays that form the marine-terrestrial interface.

Fragmentation and Orchid Habitat Loss

Road construction fragments continuous old-growth forest, replacing interior forest conditions with edge habitat characterized by increased light and reduced moisture. Fairy slipper, which depends on specific mycorrhizal soil associations that are destroyed by ground disturbance, would be directly threatened by road corridor clearing and soil compaction. The species has no capacity for rapid recolonization, and once the fungal networks that support it are destroyed, recovery on a decadal timescale is unlikely.

The Rocky Pass Inventoried Roadless Area offers recreation centered on a tidal passage that has drawn mariners, kayakers, and anglers for decades. The area is accessible primarily by boat through Keku Strait or Sumner Strait, with Rocky Pass — a shallow, winding tidal channel connecting Dakaneek Bay to Keku Strait — serving as the primary navigational feature.

Hiking

Two maintained trails provide access to the area's interior drainages. The Big John Bay Trail (Trail 21465, 1.8 miles, native material surface) follows Big John Creek from the bay margin into lowland forest. The Hamilton Creek Trail (Trail 21463, 1.1 miles, imported compacted material surface) runs along Hamilton Creek. Both trails are designated for hiker use and are reached by small boat or kayak from the adjacent bays. There are no designated campgrounds within the area; backcountry camping is dispersed.

Sea Kayaking and Small-Boat Travel

Rocky Pass is a well-known Southeast Alaska tidal passage for sea kayakers and small-boat cruisers. The channel winds through island-strewn geography between Kuiu and Kupreanof Islands, passing Salt Point, Beck Island, Horseshoe Island, and the narrows at The Summit. The shallow, reversing tidal currents require careful timing, but the enclosed waters of Mud Bay, Dakaneek Bay, and Stedman Cove offer protected anchorage and exploration. Kayaking the length of Rocky Pass provides access to multiple sheltered bays and close contact with the intertidal and coastal habitats that support the area's wildlife.

Fishing

Coastal cutthroat trout (Oncorhynchus clarkii) inhabit the cold stream drainages and estuarine transition zones of the Rocky Pass watershed, including Irish Creek, Keku Creek, Big John Creek, and Hamilton Creek. The tidal and estuarine margins of Dakaneek Bay and Mud Bay provide additional fishing opportunity where streams meet salt water. Access to most fishing areas is by small boat or kayak to the stream mouths.

Wildlife Observation

The estuarine and coastal habitats of Rocky Pass support a range of wildlife. Bald eagle (Haliaeetus leucocephalus) concentrates along the tidal margins of Dakaneek Bay and Mud Bay, where fish moving between freshwater and salt water are accessible. American black bear (Ursus americanus) ranges through the forest and streamside zones; mule deer (Odocoileus hemionus) browses in coastal forest openings. American mink (Neogale vison) forages along creek margins and in the intertidal zone. In the open waters of Keku Strait, sea otter (Enhydra lutris) forages in shallow subtidal habitat, and humpback whale (Megaptera novaeangliae) moves through the channel. Canada goose (Branta canadensis) and Steller's jay (Cyanocitta stelleri) are present within the coastal forest fringe. Rough-skinned newt (Taricha granulosa) occupies wet forest floor areas, most visible in spring near stream systems.

Roadless Character and Recreation Value

Rocky Pass is navigable as a sea kayak and small-boat route because its tidal channel and shallow flats have not been altered by road construction or industrial development. The undisturbed stream systems that drain to the passage deliver clean freshwater that sustains the estuary's productivity for fishing and wildlife observation. Road construction in the watershed would introduce sedimentation to the streams that cutthroat trout use, degrade the estuarine water quality that concentrates bald eagles and mink, and change the character of the passage as a wilderness water route.