The Great Basin culture area is centered in the intermontane deserts of present-day Nevada and includes adjacent areas in California, Oregon, Idaho, Montana, Wyoming, Colorado, Utah, and Arizona. It is so named because the surrounding mountains create a bowl-like landscape that prevented water from flowing out of the region. The most common topographic features are basin and range systems; these gradually transition to high intermontane plateaus in the north. The climate is temperate in the north and becomes subtropical to the south. Higher elevations tend to receive ample moisture but other areas average as little as two inches (50 mm) per year. Much of the region’s surface water, such as the Great Salt Lake, is brackish. The predominant ecosystem is desert.

The Great Basin is home to the Washoe, speakers of a Hokan language, and a number of tribes speaking Numic languages (a division of the Uto-Aztecan language family). These include the Mono, Paiute, Bannock, Shoshone, Ute, and Gosiute.

The peoples of this region were hunters and gatherers and generally organized themselves in mobile, kin-based bands. Seeds, piñon nuts, and small game formed the bulk of the diet for most groups, although those occupying northern and eastern locales readily adopted horses and equestrian bison hunting after Spanish mounts became available. Some of these latter groups also replaced wickiups and brush shelters, the common house forms until that time, with Plains-style tepees; peoples in the west and south, however, continued to use traditional house forms well into the 19th century. Other common forms of material culture included digging sticks, nets, basketry, grinding stones for processing seeds, and rock art. See also Great Basin peoples.

California

This culture area approximates the present states of California (U.S.) and northern Baja (Mexico). Other than the Pacific coast, the region’s dominant topographic features are the Coast Range and the Sierra Nevada; these north-south ranges are interspersed with high plateaus and basins. An extraordinary diversity of local conditions created microenvironments such as coasts, tidewaters, coastal redwood forests, grasslands, wetlands, high deserts, and mountains.

California includes representatives of some 20 language families, including Uto-Aztecan, Penutian, Yokutsan, and Athabaskan; American linguist Edward Sapir described California’s languages as being more diverse than those found in all of Europe. Prominent tribes, many with a language named for them, include the Hupa, Yurok (self-name Oohi), Pomo, Yuki, Wintun, Maidu, and Yana.

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Many California peoples eschewed centralized political structures and instead organized themselves into tribelets, groups of a few hundred to a few thousand people that recognized cultural ties with others but maintained their political independence. Some tribelets comprised just one village and others included several villages; in the latter cases, one village was usually recognized as more important than the others. The relatively few groups that lived in areas with sparse natural resources preferred to live in small mobile bands.

Agriculture was practiced only along the Colorado River; elsewhere hunting and gathering provided a relatively easy living. Acorns were the most important of the wild food sources; California peoples devised a method of leaching the toxins from acorn pulp and converting it into flour, thus ensuring abundant and constant food. Fishing, hunting, and gathering shellfish and other wild foods were also highly productive. Housing varied from wood-framed single-family dwellings to communal apartment-style buildings; ceremonial structures were very important and could often hold several hundred people. The California peoples were also known for their fine basketry, ritualized trade fairs, and the Kuksu and Toloache religions. See also Indigenous California peoples.

The Northwest Coast

This culture area is bounded on the west by the Pacific Ocean and on the east by the Coast Range, the Sierra Nevada, and the Rocky Mountains; it reaches from the area around Yakutat Bay in the north to the Klamath River area in the south. It includes the coasts of present-day Oregon, Washington, British Columbia, much of southern Alaska, and a small area of northern California. The topography is steep and in many places the coastal hills or mountains fall abruptly to a beach or riverbank. There is an abundance of precipitation—in many areas more than 160 inches (406 cm) annually, but rarely less than 30 inches (76 cm). The predominant ecosystems are temperate rainforests, intertidal zones, and the ocean.

This culture area is home to peoples speaking Athabaskan, Tshimshianic, Salishan, and other languages. Prominent tribes include the Tlingit, Haida, Tsimshian, Kwakwaka’wakw, Nuxalk, Nuu-chah-nulth, Coast Salish, and Chinook.

The peoples of the Northwest Coast had abundant and reliable supplies of salmon and other fish, sea mammals, shellfish, birds, and a variety of wild food plants. The resource base was so rich that they are unique among nonagricultural peoples in having created highly stratified societies of hereditary elites, commoners, and enslaved persons. Tribes often organized themselves into corporate “houses”—groups of a few dozen to 100 or more related people that held in common the rights to particular resources. As with the house societies of medieval Japan and Europe, social stratification operated at every level of many Northwest Coast societies; villages, houses, and house members each had their designated rank, which was reflected in nearly every social interaction.

Most groups built villages near waterways or the coast; each village also had rights to an upland territory from which the residents could obtain terrestrial foods. Dwellings were rectilinear structures built of timbers or planks and were usually quite large, as the members of a corporate “house” typically lived together in one building. Northwest Coast cultures are known for their fine wood and stone carvings, large and seaworthy watercraft, memorial or totem poles, and basketry. The potlatch, a feast associated with the bestowal of lavish gifts, was also characteristic of this culture area. See also Northwest Coast peoples.

The Plateau

Lying at the crossroads of five culture areas (the Subarctic, Plains, Great Basin, California, and Northwest Coast), the Plateau is surrounded by mountains and drained by two great river systems, the Fraser and the Columbia. It is located in present-day Montana, Idaho, Oregon, Washington, and British Columbia. Topographically, the area is characterized by rolling hills, high flatlands, gorges, and mountain slopes. The climate is temperate, although milder than the adjacent Plains because the surrounding mountain systems provide protection from continental air masses. The mountains also create a substantial rain shadow; most precipitation in this region falls at higher elevations, leaving other areas rather dry. The predominant ecosystems are grassland and high desert, although substantial forested areas are found at altitude.

Most of the languages spoken in this culture area belong to the Salishan, Sahaptin, Kutenai, and Modoc and Klamath families. Tribes include the Salish, Nimiipuu, Yakama, Kootenai, Modoc and Klamath, Spokan, Kalispel, Pend d’Oreille, Coeur d’Alene, Walla Walla, and Umatilla.

The primary political unit was the village; among some groups a sense of larger tribal and cultural unity led to the creation of representative governments, tribal chieftainships, and confederations of tribes. This was possible in part because the Columbia and Fraser rivers provided enough salmon and other fish to support a relatively dense population; however, this region was never as heavily populated or as rigidly stratified as the Northwest Coast.

Efficient hunters and gatherers, Plateau groups supplemented fish with terrestrial animals and wild plant foods, especially certain varieties of camas (Camassia). Most groups resided in permanent riverside villages and traveled to upland locales during fair-weather foraging excursions; however, horses were readily adopted once available and some groups subsequently shifted to nomadic buffalo hunting. These groups quickly adopted tepees and many other Plains cultural forms; they became particularly respected for their equine breeding programs and fine herds (see Appaloosa). Plateau fishing villages were characterized by their multifamily A-frame dwellings, while smaller conical structures were used in the uplands; both house forms were covered with grass, although canvas became a popular covering once available. In terms of portable culture, the Plateau peoples were most characterized by the wide variety of substances and technologies they used; continuously exposed to new items and ideas through trade with surrounding culture areas, they excelled at material innovation and at adapting others’ technologies to their own purposes. See also North American Plateau peoples.