Aniakchak River
The Aniakchak River is a stream, long, in Lake and Peninsula Borough on the Alaska Peninsula in the United States. It arises in Surprise Lake in the crater of Mount Aniakchak, a volcano in the Aleutian Range. It flows eastward from Aniakchak National Monument and Preserve into Aniakchak Bay and the Pacific Ocean. In 1980, a total of of streams, including the main stem Aniakchak and several tributaries, all within Aniakchak National Monument and Preserve, were designated "wild" and added to the National Wild and Scenic Rivers System. The "wild" tributaries are Hidden, Mystery, and Albert Johnson creeks and the North Fork Aniakchak River. Boating The Aniakchak River is floatable in small to medium rafts and other watercraft. However, ''The Alaska River Guide'' advises against trying it "unless you are an expert paddler, extremely self-reliant in Alaska wilderness camping, and ready for severe weather and self-rescue." From a put-in at Surprise Lake, the river begins quietly, bu ...
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Lake And Peninsula Borough, Alaska
Lake and Peninsula Borough (russian: Лейк-энд-Пенинсула, ''Leyk-end-Peninsula'') is a borough in the state of Alaska. As of the 2020 census, the population was 1,476, down from 1,631 in 2010. The borough seat of King Salmon is located in neighboring Bristol Bay Borough, although is not the seat of that borough. The most populous community in the borough is the census-designated place of Port Alsworth. With an average of 0.017 inhabitants/km2 (0.045/sq mi), the Lake and Peninsula Borough is the second least densely populated organized county-equivalent in the United States; only the unorganized Yukon-Koyukuk Census Area has a lower density. Geography The borough has an area of , of which is land and (28.2%) is water. The borough occupies most of the Alaska Peninsula. Its land area is larger than that of San Bernardino County, California, the largest county in the contiguous Lower 48 states, and slightly larger than the state of South Carolina. Adjacent boro ...
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Mount Aniakchak
Mount Aniakchak (russian: Аниакчак) is a 3,700-year-old volcanic caldera approximately in diameter, located in the Aleutian Range of Alaska, United States. Although a stratovolcano by composition, the pre-existing mountain collapsed in a major eruption forming the caldera. The area around the volcano is the Aniakchak National Monument and Preserve, maintained by the National Park Service. In November 1967, Aniakchak Caldera was designated as a National Natural Landmark by the National Park Service. Geological history Mount Aniakchak was previously a glacially eroded stratovolcano of andesitic composition, with a pre-caldera volume of . Andesitic material in the volcano included basalt and dacite. The mountain collapsed, forming the present day caldera, during a major eruption of VEI=6, which left evidence in ice cores dated to 1645 BC. which was later moved to 1641 BC in the Greenland Ice Core Chronology 2005 (GICC05) time scale. Recently, McAneney and Baillie have ...
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Aleutian Range
The Aleutian Range is a major mountain range located in southwest Alaska. It extends from Chakachamna Lake (80 miles/130 km southwest of Anchorage) to Unimak Island, which is at the tip of the Alaska Peninsula. It includes all of the mountains of the Peninsula. The Aleutian Range is special because of its large number of active volcanoes, which are also part of the larger Aleutian Arc. The mainland part of the range is about 600 miles (1000 km) long. The Aleutian Islands are (geologically) a partially submerged western extension of the range that stretches for another 1,600 km (1000 mi). However the official designation "Aleutian Range" includes only the mainland peaks and the peaks on Unimak Island. The range is almost entirely roadless wilderness. Katmai National Park and Preserve, a large national park within the range, must be reached by boat or plane. The core Aleutian Range can be divided into three mountain groups. Listed from southwest to northeast, the ...
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Aniakchak National Monument And Preserve
Aniakchak National Monument and Preserve is a U.S. National Monument and National Preserve, consisting of the region around the Aniakchak volcano on the Aleutian Range of south-western Alaska. The monument is one of the least-visited places in the National Park System due to its remote location and difficult weather. The area was proclaimed a National Monument on December 1, 1978, and established as a National Monument and Preserve on December 2, 1980. The National Monument encompasses and the preserve . Visitation to Aniakchak is the lowest of all areas of the U.S. National Park System, according to the NPS, with only 100 documented recreational visits in 2017. Most visitors fly into Surprise Lake inside Aniakchak Crater, but the frequent fog and other adverse weather conditions make landing in the lake difficult. It is also possible to fly into the nearby village of Port Heiden and proceed overland to the Aniakchak Crater. The core of the national monument lands encompasses ...
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Alaska Peninsula
The Alaska Peninsula (also called Aleut Peninsula or Aleutian Peninsula, ale, Alasxix̂; Sugpiaq: ''Aluuwiq'', ''Al'uwiq'') is a peninsula extending about to the southwest from the mainland of Alaska and ending in the Aleutian Islands. The peninsula separates the Pacific Ocean from Bristol Bay, an arm of the Bering Sea. In literature (especially Russian) the term "Alaska Peninsula" was used to denote the entire northwestern protrusion of the North American continent, or all of what is now the state of Alaska, exclusive of its panhandle and islands. The Lake and Peninsula borough, the Alaskan equivalent of a county, is named after the peninsula. The Alaska/Aleutian Peninsula is also grouped into Southwest Alaska. The other largest peninsulas in Alaska include the Kenai Peninsula and Seward Peninsula. Geography The base of the Alaska Peninsula extends out from the end of the Alaska Range. The Aleutian Range is a highly active volcanic mountain range which runs a ...
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Google Earth
Google Earth is a computer program that renders a 3D computer graphics, 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposition, superimposing satellite images, aerial photography, and geographic information system, GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering addresses and coordinates, or by using a Computer keyboard, keyboard or computer mouse, mouse. The program can also be downloaded on a smartphone or Tablet computer, tablet, using a touch screen or stylus to navigate. Users may use the program to add their own data using Keyhole Markup Language and upload them through various sources, such as forums or blogs. Google Earth is able to show various kinds of images overlaid on the surface of the earth and is also a Web Map Service client. In 2019, Google has revealed that Google Earth now covers more than 97 percent of the world, and has c ...
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Surprise Lake (Alaska)
Surprise Lake may refer to: Places Canada *Surprise Lake (Roy River), Quebec * Surprise Lake (Vancouver Island), British Columbia * Surprise Lake (Lappe), in Lappe, Ontario United States * Surprise Lake (Arizona), Surprise, Arizona * Surprise Lake (Idaho), Elmore County, Idaho * Surprise Lake (Washington), Milton, Washington * Surprise Lake (Teton County, Wyoming), a lake in Grand Teton National Park * Surprise Lake, a lake in the caldera atop Mount Aniakchak, Alaska Other uses * Surprise Lake Camp Surprise Lake Camp is a non-profit sleepaway camp located on over in North Highlands, New York (approximately north of New York City). It is the oldest Jewish summer camp in the United States. History Founded in 1901 by the Educational Allianc ...

Aniakchak Bay
Aniakchak may refer to: *Aniakchak National Monument and Preserve *Mount Aniakchak *Aniakchak River The Aniakchak River is a stream, long, in Lake and Peninsula Borough on the Alaska Peninsula in the United States. It arises in Surprise Lake in the crater of Mount Aniakchak, a volcano in the Aleutian Range. It flows eastward from Aniakchak Na ...

Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continents of Asia and Oceania in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about 32% of its total surface area, larger than Earth's entire land area combined .Pacific Ocean
. '' Britannica Concise.'' 2008: Encyclopædia Britannica, Inc. The centers of both the

Main Stem
In hydrology, a mainstem (or trunk) is "the primary downstream segment of a river, as contrasted to its tributaries". Water enters the mainstem from the river's drainage basin, the land area through which the mainstem and its tributaries flow.. A drainage basin may also be referred to as a ''watershed'' or ''catchment''. Hydrological classification systems assign numbers to tributaries and mainstems within a drainage basin. In the Strahler number, a modification of a system devised by Robert E. Horton in 1945, channels with no tributaries are called "first-order" streams. When two first-order streams meet, they are said to form a second-order stream; when two second-order streams meet, they form a third-order stream, and so on. In the Horton system, the entire mainstem of a drainage basin was assigned the highest number in that basin. However, in the Strahler system, adopted in 1957, only that part of the mainstem below the tributary of the next highest rank gets the highest num ...
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National Wild And Scenic Rivers System
The National Wild and Scenic Rivers System was created by the Wild and Scenic Rivers Act of 1968 (Public Law 90-542), enacted by the U.S. Congress to preserve certain rivers with outstanding natural, cultural, and recreational values in a free-flowing condition for the enjoyment of present and future generations. The Act is notable for safeguarding the special character of these rivers, while also recognizing the potential for their appropriate use and development. It encourages river management that crosses political boundaries and promotes public participation in developing goals for river protection. The Act, signed into law by President Lyndon B. Johnson in the height of the United States environmental era, states:"It is hereby declared to be the policy of the United States that certain selected rivers of the Nation which, with their immediate environments, possess outstandingly remarkable scenic, recreational, geologic, fish and wildlife, historic, cultural or other similar ...
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