Lake Champlain in the context of Vermont

New York, also called New York State, is a state in the northeastern United States. Bordered by the New England states to the east, Canada to the north, and Pennsylvania and New Jersey to the south, its territory extends into both the Atlantic Ocean and the Great Lakes. New York is the fourth-most populous state in the United States, with nearly 20 million residents, and the 27th-largest state by area, with a total area of 54,556 square miles (141,300 km).

New York has a varied geography. The southeastern part of the state, known as Downstate, encompasses New York City, the most populous city in the United States; Long Island, with approximately 40% of the state's population, the nation's most populous island; and the cities, suburbs, and wealthy enclaves of the lower Hudson Valley. These areas are the center of the expansive New York metropolitan area and account for approximately two-thirds of the state's population. The larger Upstate area spreads from the Great Lakes to Lake Champlain and includes the Adirondack Mountains and the Catskill Mountains (part of the wider Appalachian Mountains). The east–west Mohawk River Valley bisects the more mountainous regions of Upstate and flows into the north–south Hudson River valley near the state capital of Albany. Western New York, home to the cities of Buffalo and Rochester, is part of the Great Lakes region and borders Lake Ontario and Lake Erie. Central New York is anchored by the city of Syracuse; between the central and western parts of the state, New York is prominently featured by the Finger Lakes, a popular tourist destination. To the south, along the state border with Pennsylvania, the Southern Tier sits atop the Allegheny Plateau, representing some of the northernmost reaches of Appalachia.

The Laurentide ice sheet (LIS) was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern United States, multiple times during the Quaternary glaciation epochs, from 2.58 million years ago to the present.

The last advance covered most of northern North America between c. 95,000 and c. 20,000 years before the present day and, among other geomorphological effects, gouged out the five Great Lakes and the hosts of smaller lakes of the Canadian Shield. These lakes extend from the eastern Northwest Territories, through most of northern Canada, and the upper Midwestern United States (Minnesota, Wisconsin, and Michigan) to the Finger Lakes, through Lake Champlain and Lake George areas of New York, across the northern Appalachians into and through all of New England and Nova Scotia.

The Green Mountain Boys were a militia organization established in 1770 in the territory between the British provinces of New York and New Hampshire, known as the New Hampshire Grants and later in 1777 as the Vermont Republic (which later became the state of Vermont). Headed by Ethan Allen and members of his extended family, it was instrumental in resisting New York's attempts to control the territory, over which it had won de jure control in a territorial dispute with New Hampshire.

Some companies served in the American Revolutionary War, including notably when the Green Mountain Boys, led under the command of Ethan Allen while being assisted by Benedict Arnold, captured Fort Ticonderoga on Lake Champlain on May 10, 1775, and invaded Canada later in 1775. In early June 1775, Ethan Allen and his then subordinate, Seth Warner, induced the Continental Congress at Philadelphia to create a Continental Army ranger regiment from the then New Hampshire Grants. Having no treasury, the Congress directed that New York's revolutionary Congress pay for the newly authorized regiment. In July 1775, Allen's militia was granted support from the New York revolutionary Congress.

The geography of New York varies widely across the state. Most of New York is dominated by farms, forests, rivers, mountains, and lakes. New York's Adirondack Park is larger than any U.S. National Park in the contiguous United States. Niagara Falls, on the Niagara River as it flows from Lake Erie to Lake Ontario, is a popular attraction. The Hudson River begins near Lake Tear of the Clouds and flows south through the eastern part of the state without draining lakes George or Champlain. Lake George empties at its north end into Lake Champlain, whose northern end extends into Canada, where it drains into the Richelieu River and then the St. Lawrence. Four of New York City's five boroughs are on the three islands at the mouth of the Hudson River: Manhattan Island, Staten Island, and Brooklyn and Queens on Long Island.

"Upstate" is a common term for New York counties north of suburban Westchester, Rockland and Dutchess counties. Upstate New York typically includes the Catskill Mountains or areas North of the Catskill Mountains, the Capital District, The Adirondacks, the Erie Canal, Lake Champlain, Otsego Lake, Oneida Lake; rivers such as the Delaware, Genesee, Mohawk, and Susquehanna. The highest elevation in New York is Mount Marcy of the Adirondack Mountains. New York is the 27th-largest state.

This is a list of U.S. states and territories ranked by their coastline length. 30 states have a coastline: 23 with a coastline on the Arctic Ocean, Atlantic Ocean (including the Gulf of Mexico and Gulf of Maine), and/or Pacific Ocean, and 8 with a Great Lakes shoreline. New York has coasts on both the Great Lakes and the Atlantic Ocean. Smaller border lakes, such as Lake Champlain and Lake of the Woods, are not counted. All of the five major U.S. territories have coastlines: three of them have a coastline on the Pacific Ocean, and two of them have a coastline on the Atlantic Ocean (Caribbean Sea). The U.S. Minor Outlying Islands also have coastlines.

Two separate measurements are used: method 1 only includes states with ocean coastline and excludes tidal inlets; method 2 includes Great Lake shoreline and the extra length from tidal inlets. For example, method 2 counts the Great Bay as part of New Hampshire's coastline, but method 1 does not. Method 1 does not include the coastlines of the territories of the United States, and method 2 does.

New York, also called New York state, is a state in the northeastern United States. Bordered by the New England states to the east, Canada to the north, and Pennsylvania and New Jersey to the south, its territory extends into both the Atlantic Ocean and the Great Lakes. New York is the fourth-most populous state in the United States, with nearly 20 million residents, and the 27th-largest state by area, with a total area of 54,556 square miles (141,300 km).

New York has a varied geography. The southeastern part of the state, known as Downstate, encompasses New York City, the most populous city in the United States; Long Island, with approximately 40% of the state's population, the nation's most populous island; and the cities, suburbs, and wealthy enclaves of the lower Hudson Valley. These areas are the center of the expansive New York metropolitan area and account for approximately two-thirds of the state's population. The larger Upstate area spreads from the Great Lakes to Lake Champlain and includes the Adirondack Mountains and the Catskill Mountains (part of the wider Appalachian Mountains). The east–west Mohawk River Valley bisects the more mountainous regions of Upstate and flows into the north–south Hudson River valley near the state capital of Albany. Western New York, home to the cities of Buffalo and Rochester, is part of the Great Lakes region and borders Lake Ontario and Lake Erie. Central New York is anchored by the city of Syracuse; between the central and western parts of the state, New York is prominently featured by the Finger Lakes, a popular tourist destination. To the south, along the state border with Pennsylvania, the Southern Tier sits atop the Allegheny Plateau, representing some of the northernmost reaches of Appalachia.

The Beaver Wars (Mohawk: Tsianì kayonkwere, pronounced [d͡ʒanî gajũgwere]), also known as the Iroquois Wars or the French and Iroquois Wars (French: Guerres franco-iroquoises), were a series of conflicts fought intermittently during the 17th century in North America throughout the Saint Lawrence River valley in Canada and the Great Lakes region which pitted the Iroquois (Haudenosaunee) against the Wendat, northern Algonquians and their French allies. As a result of this conflict, the Iroquois destroyed several confederacies and tribes through warfare: the Wendat or Hurons, Erie, Neutral, Wenro, Petun, Susquehannock, Mohican and northern Algonquins whom they defeated and dispersed, some fleeing to neighbouring peoples and others assimilated, routed, or killed.

The Iroquois sought to expand their territory to monopolize the fur trade with European markets. They originally were a confederacy of the Mohawk, Oneida, Onondaga, Cayuga, and Seneca tribes inhabiting the lands in what is now Upstate New York along the shores of Lake Ontario east to Lake Champlain and Lake George on the Hudson River, and the lower-estuary of the Saint Lawrence River. The Iroquois Confederation led by the Mohawks mobilized against the largely Algonquian-speaking tribes and Iroquoian-speaking Wendat (Huron) and related tribes of the Great Lakes region. The Iroquois were supplied with arms by their Dutch and English trading partners; the Algonquians and Wendat were backed by the French, their chief trading partner.

Lake George (Mohawk: Kaniá:taro’kte, "Lake-End") is a long narrow oligotrophic lake located at the southeast base of the Adirondack Mountains, in the northeastern portion of the U.S. state of New York. It lies within the upper region of the Great Appalachian Valley and drains all the way northward into Lake Champlain and the St. Lawrence River drainage basin. The lake is situated along the historical natural (Amerindian) path between the valleys of the Hudson and St. Lawrence Rivers, and so lies on the direct land route between Albany, New York, and Montreal, Quebec, Canada. The lake extends about 32.2 mi (51.8 km) on a north–south axis, is 187 ft (57 m) deep, and ranges from one to three miles (1.6 to 4.8 km) in width, presenting a significant barrier to east–west travel. Although the year-round population of the Lake George region is relatively small, the summertime population can swell to over 50,000 residents, many in the village of Lake George region at the southern end of the lake.

Lake George drains into Lake Champlain to its north through a short stream, the La Chute River, with many falls and rapids and drops 226 feet (69 m) in its 3.5-mile (5.6 km) course, virtually all of which is within the lands of Ticonderoga, New York, and near the site of Fort Ticonderoga. Ultimately, the waters flowing via the 106-mile-long (171 km) Richelieu River drain into the St. Lawrence River downstream and northeast of Montreal, and then into the North Atlantic Ocean in Nova Scotia.

The North Country of Upstate New York is the northernmost region of the U.S. state of New York. It is bordered by Lake Champlain to the east and further east to the adjacent state of Vermont and the New England region; the Adirondack Mountains / Adirondack Park and the Upper Capital District with the state capital of Albany to the south; the Mohawk Valley region of New York to the southwest; the Canadian-American international border (with the Province of Ontario in Canada) to the north; and Lake Ontario, (the eastern-most of the Great Lakes) and the Saint Lawrence River / Saint Lawrence Seaway, and beyond the waters again to Ontario / Canada to the west. A mostly rural forested area, the North Country includes seven counties (or 14, according to another group) of the 62 in New York state. Fort Drum, a United States Army base, is also located in the North Country region in Jefferson County, near Watertown, as is the adjacent Adirondack Park of 6.1 million acres, established 1892 as the oldest state park in the nation, and preserved / operated by the Adirondack Park Agency and the New York State Department of Environmental Conservation. As of 2024, the population of the region was 420,311 (revised figure from the last 2020 United States census).

The term "North Country" was first widely popularized within New York by the 1900 novel Eben Holden by Irving Bacheller.

This monument was erected under the patronage of the State of Connecticut in the 55th year of the Independence of the U.S.A. in memory of the brave patriots massacred at Fort Griswold near this spot on the 6th of Sept. AD 1781, when the British, under the command of the Traitor Benedict Arnold, burnt the towns of New London and Groton and spread desolation and woe throughout the region.

Benedict Arnold (January 14, 1741 [O.S. January 3, 1740] – June 14, 1801) was an American-born British military officer who served during the American Revolutionary War. He fought with distinction for the American Continental Army and rose to the rank of major general before defecting to the British in 1780. General George Washington had given him his fullest trust and had placed him in command of West Point in New York. Arnold was planning to surrender the fort to British forces, but the plot was discovered in September 1780, whereupon he fled to the British lines. In the later part of the war, Arnold was commissioned as a brigadier general in the British Army and placed in command of the American Legion. He led British forces in battle against the army which he had once commanded, and his name became synonymous with treason and betrayal in the United States.

Born in Connecticut, Arnold was a merchant operating ships in the Atlantic when the war began. He joined the growing American army outside of Boston and distinguished himself by acts that demonstrated intelligence and bravery: In 1775, he captured Fort Ticonderoga. In 1776, he employed defensive and delaying tactics at the Battle of Valcour Island on Lake Champlain that gave American forces time to prepare New York's defenses. His performance in the Battle of Ridgefield in Connecticut prompted his promotion to major general. He conducted operations that provided the Americans with relief during the Siege of Fort Stanwix, and key actions during the pivotal 1777 Battles of Saratoga in which he sustained leg injuries that put him out of combat for several years.

The capture of Fort Ticonderoga occurred during the American Revolutionary War on May 10, 1775, when a small force of Green Mountain Boys led by Ethan Allen and Colonel Benedict Arnold surprised and captured the fort's small British garrison. The cannons and other armaments at Fort Ticonderoga were later transported to Boston by Colonel Henry Knox in the noble train of artillery and used to fortify Dorchester Heights and break the standoff at the siege of Boston.

Capture of the fort marked the beginning of offensive action taken by the Americans against the British. After seizing Ticonderoga, a small detachment captured the nearby Fort Crown Point on May 11. Seven days later, Arnold and 50 men raided Fort Saint-Jean on the Richelieu River in southern Quebec, seizing military supplies, cannons, and the largest military vessel on Lake Champlain.

The Richelieu River (French: [ʁiʃ(ə)ljø] ) is a river of Quebec, Canada, and a major right-bank tributary of the St. Lawrence River. It rises at Lake Champlain, from which it flows northward through Quebec and empties into the St. Lawrence. It was formerly known by the French as the Iroquois River and the Chambly River, and was named for Cardinal Richelieu, the powerful minister under Louis XIII.

This river was a long a key route of water transport for trading, first by indigenous peoples, and then for cross-border trade between Canada and the United States. With 19th-century construction of the Champlain Canal (1823) south of Lake Champlain and the Chambly Canal (1843) to the north, the Richelieu provided a direct route from the Saint Lawrence River to New York via Lake Champlain, the canals, and the Hudson River. The construction of rail transport in the mid-19th century competed with such river/canal routes and ultimately succeeded them, because of faster service with greater freight capacity.

Plattsburgh is a city in and the county seat of Clinton County, New York, United States, situated on the north-western shore of Lake Champlain. The population was 19,841 at the 2020 census. The population of the surrounding (and separately incorporated) Town of Plattsburgh was 11,886 as of the 2020 census, making the combined population of Plattsburgh to be 31,727. Plattsburgh lies just to the northeast of Adirondack Park, immediately outside of the park boundaries. It is the second largest community in the North Country region (after Watertown), and serves as the main commercial hub for the sparsely populated northern Adirondack Mountains. The land around Plattsburgh was previously inhabited by the Iroquois, Western Abenaki, Mohican, and Mohawk people. Samuel de Champlain was the first ever recorded European that sailed into Champlain Valley and later claimed the region as a part of New France in 1609.

Plattsburgh was the site of the amphibious Battle of Plattsburgh in the War of 1812, a key American victory that marked the end of hostilities in the Northern United States. It has been an important military outpost for much of its history, from hosting one of the largest Citizens' Military Training Camps prior to World War I, and Plattsburgh Air Force Base, the east coast center of operations for the Strategic Air Command during much of the Cold War period. The conversion of the base to a civilian airport in the 1990s resulted from the Base Realignment and Closure process during the wind down of the Cold War, and today it serves as a hub for economic development for the region. The city was named one of the Financial Times Top 10 Micro Cities of the Future several times.

Fort Ticonderoga (/taɪkɒndəˈroʊɡə/), formerly Fort Carillon, is a large 18th-century star fort built by the French at a narrows near the south end of Lake Champlain in northern New York. It was constructed between October 1755 and 1757 by French-Canadian military engineer Michel Chartier de Lotbinière, Marquis de Lotbinière during the French and Indian War, sometimes known overseas as the "North American theater" of the Seven Years' War. The fort was of strategic importance during the 18th-century colonial conflicts between Great Britain and France, and again played an important role during the American Revolutionary War.

The site controlled a river portage alongside the mouth of the rapids-infested La Chute River, in the 3.5 miles (5.6 km) between Lake Champlain and Lake George. It was strategically placed for the trade routes between the British-controlled Hudson River Valley and the French-controlled Saint Lawrence River Valley.

Grand Isle, also known as South Hero Island, is the largest island in Lake Champlain, Vermont, United States. It has a land area of 31.61 square miles (81.9 km). The island comprises the two towns of Grand Isle and South Hero and makes up the southern portion of Grand Isle County, Vermont. The total population as of the 2000 census was 3,651.

Isle La Motte (French: Île La Motte) is an island in Lake Champlain in northwestern Vermont, United States. At 7 mi (11 km) by 2 mi (3 km), it lies close to the place that the lake empties into the Richelieu River. It is incorporated as a New England town in Grand Isle County. Its population was 488 at the 2020 census.

The island is named after a French soldier, Pierre La Motte, who built a military outpost on the island in 1666. The island's population significantly increases in the summer months. The island is the site of Fort Sainte Anne, Saint Anne's Shrine, the Methodist Episcopal Church of Isle La Motte, the Fisk Quarry and Goodsell Ridge Preserves, the Isle La Motte Elementary School, and the Isle La Motte Lighthouse.

Grand Isle County is a county in the U.S. state of Vermont. As of the 2020 census, the population was 7,293, making it Vermont's second-least populous county. Its shire town (county seat) is North Hero. The county was created in 1802 and organized in 1805.

Grand Isle County is part of the Burlington metropolitan area. The county does not have a high school; students choose from a number of high schools in neighboring counties.. The county consists of several non-contiguous and sparsely populated islands and peninsulas of Lake Champlain, connected to each other by U.S. Route 2.