How to Get There

Overview

Glacier Bay National Park and Preserve is an national park located in Southeast Alaska west of Juneau. President Calvin Coolidge proclaimed the area around Glacier Bay a national monument under the Antiquities Act on February 25, 1925. Subsequent to an expansion of the monument by President Jimmy Carter in 1978, the Alaska National Interest Lands Conservation Act (ANILCA) enlarged the national monument by 523,000 acres (817.2 sq mi; 2,116.5 km2) on December 2, 1980, and created Glacier Bay National Park and Preserve. The national preserve encompasses 58,406 acres (91.3 sq mi; 236.4 km2) of public land to the immediate northwest of the park, protecting a portion of the Alsek River with its fish and wildlife habitats, while allowing sport hunting.

Glacier Bay became part of a binational UNESCO World Heritage Site in 1979, and was inscribed as a Biosphere Reserve in 1986.

Geology

The west side of the bay consists of a 26,000 feet thick sequence of Paleozoic sedimentary rocks, mainly massive limestones and argillite. The oldest rocks in this sequence are the Late Silurian Willoughby limestone and the youngest being the Middle Devonian Black Cap limestone. An outcrop west of Tidal Inlet includes a sandstone, graywacke and limestone of unknown age. Sedimentary rocks of unknown age on the east side of Muir Inlet include tuff interbedded with limestone. The rocks exposed on the 1,205 foot high hill called "The Nunatak" have been metamorphosed. Early Cretaceous diorite stocks are exposed south of Tidal Inlet, and on Sebree and Sturgress Islands. Quartz diorite outcrops on Lemesurier Island. A granitic stock is exposed in Dundas Bay. Mafic dikes up to 20 feet in width occur throughout the area.

Glacial advances occurred 7,000, 5,000 and 500 years ago, with the last extending to the entrance of the bay, where it left a huge semicircular terminal moraine. The consequent surface glacial deposits include gravels as outwash and moraines. Glacial gravels extend up to 2000 feet up the mountain slopes. Lakes have formed where the glaciers have dammed the heads of valleys. Preglacial forests are found east of Goose Cove and on the east side of Muir Inlet. According to Rossman, "One of the outstanding features of the Glacier Bay area is the rapid advance and retreat of the glaciers during several substages within the last few thousand years."

Geography

Glacier Bay National Park and Preserve occupies the northernmost section of the southeastern Alaska coastline, between the Gulf of Alaska and Canada. The Canada-US border approaches to within 15 miles (24 km) of the ocean in the St. Elias Mountains at Mount Fairweather, the park's tallest peak at 15,300 feet (4,700 m), transitioning to the Fairweather Range from there southwards. The Brady Icefield caps the Fairweather Range on a peninsula extending from the ocean to Glacier Bay, which extends from Icy Strait to the Canada-US border at Grand Pacific Glacier, cutting off the western part of the park. To the east of Glacier Bay the Takhinsha Mountains and the Chilkat Range form a peninsula bounded by the Lynn Canal on the east, with the park's eastern boundary with Tongass National Forest running along the ridgeline. The park's northwestern boundary, which also abuts Tongass National Forest, runs in the valley of the Alsek River to Dry Bay. The preserve lands comprise a small area at Dry Bay — the majority of Glacier Bay lands are national park lands. The park boundary excludes Gustavus at the mouth of Glacier Bay. The lands adjoining the park to the north in Canada are included in Tatshenshini-Alsek Provincial Park.

No roads lead to the park and it is most easily reached by air travel. During some summers there are ferries to the small community of Gustavus or directly to the marina at Bartlett Cove. Despite the lack of roads, the park received an average of about 470,000 recreational visitors annually from 2007 to 2016, with 520,171 visitors in 2016. Most of the visitors arrive via cruise ships. Other travelers come on white-water rafting trips, putting in on the Tatshenshini River at Dalton Post in the Yukon Territory and taking out at the Dry Bay Ranger Station in the Glacier Bay National Preserve. Trips generally take six days and pass through Kluane National Park and Reserve in the Yukon and Tatshenshini-Alsek Provincial Park in British Columbia.

Within the park and preserve there are two Tlingit ancestral homelands that are of cultural and spiritual significance to living communities today. The Alsek River serves as a route of discovery and migration from the coastal mountain range in the park to the Pacific Ocean in the preserve. Within the preserve, in contrast to the park, the Alsek River provides a setting for subsistence uses, commercial fishing, and hunting as provided for in the Alaska National Interest Lands Conservation Act (ANILCA) while simultaneously protecting the glacial ecosystem.

Glaciers

The Park is named for its abundant tidewater and terrestrial glaciers, numbering 1,045 in total.

There are seven tidewater glaciers in the park: Margerie Glacier, Grand Pacific Glacier, McBride Glacier, Lamplugh Glacier, Johns Hopkins Glacier, Gilman Glacier, and LaPerouse Glacier. (High tide-water glaciers also include Riggs Glacier, Reid Glacier, Lituya Glacier, and North Crillon Glacier.) Four of these glaciers actively calve icebergs into the bay. In the 1990s, the Muir Glacier receded to the point that it was no longer a tidewater glacier. The advance and recession of the park's glaciers has been extensively documented since La Perouse visited the bay in 1786. According to the U.S. National Park Service, "In general, tidewater and terrestrial glaciers in the Park have been thinning and slowly receding over the last several decades." Some glaciers continue to advance, including Johns Hopkins Glacier and glaciers in Lituya Bay.

Ecosystems

Ecosystems in the park are wet tundra, Alpine tundra, coastal forest, and glaciers and icefields.

Regions of the park closest to the Gulf of Alaska have a relatively mild climate with significant rainfall and comparatively low snowfall. Lower Glacier Bay is a transitional zone, and upper Glacier Bay is cold and snowy. Access to the land can be difficult, since the glacial fjords have steep walls that rise directly from the water. Where there are shoreline flats, they can be densely vegetated with alder and devils club, making hiking difficult.

Fauna

Wildlife in Glacier Bay includes both brown and black bear species, timber wolf, coyote, moose, black-tailed deer, Arctic and red fox species, porcupine, marmot, dall sheep, beaver, Canadian lynx, two species of otter, mink, wolverine, and mountain goat. Birds that nest in this park include the bald eagle, golden eagle, five species of woodpecker, two species of hummingbird, raven, four species of falcon, six species of hawk, osprey, and ten species of owl. Marine mammal species that swim offshore are the sea otter, harbor seal, Steller sea lion, Pacific white-sided dolphin, orca, minke whale, and humpback whale.

Activities

About 80% of visitors to Glacier Bay arrive on cruise ships. The National Park Service operates cooperative programs where rangers provide interpretive services aboard the ships and on the smaller boats that offer excursion trips to more distant park features. In-park accommodations are available at the Glacier Bay Lodge. The park and preserve hosts many outdoor activities such as hiking, camping, mountaineering, kayaking, rafting, fishing, and bird-watching. Unlike many other national parks in Alaska, subsistence hunting is not allowed in the park, only in the preserve.

Sport hunting and trapping are also allowed in the preserve. To hunt and trap, you must have all required licenses and permits and follow all other state regulations. The National Park Service and the State of Alaska cooperatively manage the wildlife resources of the preserve. Campers and hunters should be aware that brown bears are common in the preserve and be prepared to avoid conflicts with them. Typically hunted species in the preserve include black bears, mountain goats, wolves, wolverines, snowshoe hare, ptarmigans, waterfowls and a number of furbearers. There is one big game hunting guide authorized through concession contracts to operate within Glacier Bay National Preserve. Three lodges and one outfitter can provide transportation and services for fishing and hunting small game and waterfowl.

Sport fishing is another activity popular in the park. Halibut are frequently esteemed by deep-sea fishers and in rivers and lakes Dolly Varden and rainbow trout provide sport.

World Heritage Site

The Kluane-Wrangell-St. Elias-Glacier Bay-Tatshenshini-Alsek transborder park system comprising Kluane, Wrangell-St Elias, Glacier Bay and Tatshenshini-Alsek parks, was declared a UNESCO World Heritage Site in 1979 for the spectacular glacier and icefield landscapes as well as for the importance of grizzly bears, caribou and Dall sheep habitat. The Glacier Bay National Park was added in 1992 to the Heritage Site.

This article uses material from the Wikipedia article "Glacier Bay National Park and Preserve", which is released under the Creative Commons Attribution-Share-Alike License 3.0