The term "United States," when used in the geographical sense, refers to the contiguous United States, Alaska, Hawaii, the five insular territories of Puerto Rico, Northern Mariana Islands, U.S. Virgin Islands, Guam, American Samoa, and minor outlying possessions. The United States shares land borders with Canada and Mexico and maritime borders with Russia, Cuba, The Bahamas, and many other countries, mainly in the Caribbeanin addition to Canada and Mexico. The northern border of the United States with Canada is the world's longest bi-national land border.
The contiguous United States consists of the 48 adjoining U.S. states and the District of Columbia of the United States of America in central North America. The term excludes the only two non-contiguous states, which are Alaska and Hawaii, and all other offshore insular areas, such as the U.S. territories of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the U.S. Virgin Islands. The colloquial term "Lower 48" is also used, especially in relation to Alaska.
HMS Challenger was a survey ship of the United Kingdom's Royal Navy associated with the discovery of Challenger Deep, the deepest point in the oceans. She was laid down in 1930 at Chatham Dockyard and built in a dry dock, before being moved to Portsmouth for completion and commissioning on 15 March 1932.
The Great Divide Basin or Great Divide Closed Basin is an area of land in the Red Desert of Wyoming where none of the water falling as rain to the ground drains into any ocean, directly or indirectly. It is thus an endorheic basin, one of several in North America that adjoin the Continental Divide. To the south and west of the basin is the Green River watershed, draining to the Gulf of California/Pacific Ocean; to the north and east is the North Platte watershed, draining to the Gulf of Mexico. The basin is very roughly rectangular in shape; the northwest corner is at Oregon Buttes near South Pass, about 40 miles (64 km) southwest of Lander, and the southeast corner is in the Sierra Madre Range near Bridger Pass, about 20 miles (32 km) southwest of Rawlins.
The Kokosing River (ko-KO-sing) is a tributary of the Walhonding River, 57.2 miles (92.1 km) long, in east-central Ohio in the United States. Via the Walhonding, Muskingum and Ohio Rivers, it is part of the watershed of the Mississippi River, draining an area of 482 square miles (1248 km²). Etymologically, "Kokosing" translates roughly to "River of Little Owls." The Kokosing River rises in Morrow County, northeast of Mount Gilead, and initially flows southwardly. It turns eastwardly near Chesterville and flows through Knox and Coshocton Counties, passing the communities of Mount Vernon, Gambier and Howard. In western Coshocton County the Kokosing joins the Mohican River to form the Walhonding River, about 2 miles (3 km) northwest of Nellie.
The Mineral River is an 18.7-mile-long (30.1 km) tributary of Lake Superior on the western Upper Peninsula of Michigan in the United States. It flows for its entire length in western Ontonagon County, rising in the Ottawa National Forest and flowing generally northward to meet Lake Superior about 11 miles (18 km) west-southwest of Ontonagon. The United States Board on Geographic Names settled on "Mineral River" as the stream's name in 1976; according to the Geographic Names Information System it has also been known historically as "Beaver Creek".
The Licking River is a tributary of the Muskingum River, about 40 mi (65 km) long, in central Ohio in the United States. Via the Muskingum and Ohio Rivers, it is part of the watershed of the Mississippi River.
Grays Harbor is an estuarine bay located 45 miles (72 km) north of the mouth of the Columbia River, on the southwest Pacific coast of Washington state, in the United States. It is a ria, which formed at the end of the last ice age, when sea levels flooded the Chehalis River. The bay is 17 miles (27 km) long and 12 miles (19 km) wide. The Chehalis River flows into its eastern end, where the city of Aberdeen stands at that river's mouth, on its north bank, with the somewhat smaller city of Hoquiam immediately to its northwest, along the bayshore. Besides the Chehalis, many lesser rivers and streams flow into Grays Harbor, such as the Hoquiam River and Humptulips River. A pair of low peninsulas separate it from the Pacific Ocean, except for an opening about two miles (3 km) in width. The northern peninsula, which is largely covered by the community of Ocean Shores, ends in Point Brown. Facing that across the bay-mouth is Point Chehalis, at the end of the southern peninsula upon which stands the town of Westport.
Fena Lake (Reservoir) is the largest lake in the United States territory of Guam and it is a man made reservoir. It is located in the south of the island on the Ordnance Annex military installation, and is overlooked by the nearby peaks of Mounts Lamlam, Alifan and Jumullong Manglo. The lake's outflow is to the north-west, its waters eventually reaching the Pacific Ocean at Talofofo Bay.
The Barren River is a 135-mile-long (217 km) river in Southcentral Kentucky, United States, and a tributary of the Green River. The watershed of the Green River is the largest of the twelve major river watersheds in Kentucky. The Barren River rises near the Tennessee border in Monroe County and flows into the Green in northeast Warren County. The drainage basin consists of Southcentral Kentucky and north-central Tennessee.
In geography, the centroid of the two-dimensional shape of a region of the Earth's surface is known as its geographic centre or geographical centre or gravitational centre. Informally, determining the centroid is often described as finding the point upon which the shape would balance. This method is also sometimes described as the "gravitational method".
Reserve Township is one of thirteen townships in Parke County, Indiana, United States. As of the 2010 census, its population was 1,423 and it contained 675 housing units.
Old Forge is an unincorporated community in Quincy Township, Franklin County, Pennsylvania, United States, within the Michaux State Forest, at 39°47′40″N77°29′3″W, at altitude of 892 feet (272 m).
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the United States government whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of extraterrestrial planets and moons based on data from U.S. space probes.
The geographic center of the United States is a point approximately 20 mi (32 km) north of Belle Fourche, South Dakota at 44°58′2.07622″N103°46′17.60283″W. It has been regarded as such by the United States Coast and Geodetic Survey and the U.S. National Geodetic Survey (NGS) since the additions of Alaska and Hawaii to the United States in 1959.
Dru Rock is a rocky island 0.28 kilometres (0.15 nmi) long between Retour Island and Claquebue Island in the Curzon Islands. The island is home to many craggy rock faces, which make climbing difficult.
Evans Glacier is a gently-sloping glacier 15 nautical miles (28 km) long and 4 nautical miles (7 km) wide, draining the southeast slopes of Travnik Buttress eastwards between Rugate Ridge and Poibrene Heights to flow into Vaughan Inlet on the east coast of Graham Land, Antarctica. It was discovered by Sir Hubert Wilkins in an aerial flight, December 20, 1928, and named "Evans Inlet" by him for E.S. Evans of Detroit. A further survey by the Falkland Islands Dependencies Survey in 1955 reported that this low-lying area is not an inlet, but is formed by the lower reaches of Hektoria Glacier and the feature now described.
