Lincoln Gap, is a mountain pass

Mountain pass

A mountain pass is a route through a mountain range or over a ridge. If following the lowest possible route, a pass is locally the highest point on that route...

 in the Green Mountains

Green Mountains

The Green Mountains are a mountain range in the U.S. state of Vermont. The range extends approximately .-Peaks:The most notable mountains in the range include:*Mount Mansfield, , the highest point in Vermont*Killington Peak, *Mount Ellen,...

 of Vermont

Vermont

Vermont is a state in the New England region of the northeastern United States of America. The state ranks 43rd in land area, , and 45th in total area. Its population according to the 2010 census, 630,337, is the second smallest in the country, larger only than Wyoming. It is the only New England...

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The highest point of the pass is located in Addison County

Addison County, Vermont

Addison County is a county located in the U.S. state of Vermont. In 2010, the population was 36,821. Its shire town is Middlebury.-Geography:...

, about 0.5 mi east of the boundary between Addison and Washington County

Washington County, Vermont

Washington County is a county located in the U.S. state of Vermont. As of 2010, the population was 59,534; Vermont's third-most populous county after Chittenden County and Rutland County. Its shire town is Montpelier, the state capital. The center of population of Vermont is located in Washington...

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On the east side, Lincoln Gap is drained by Lincoln Brook, which drains into the Mad River

Mad River (Vermont)

The Mad River is a tributary to the Winooski River in Vermont. It has its headwaters in Granville Gulf, then flows north through the towns of Warren, Waitsfield, and Moretown before entering the Winooski River just downstream from Middlesex. Other towns within the Mad River watershed are the...

, the Winooski River

Winooski River

The Winooski River is a tributary of Lake Champlain, approximately long, in northern Vermont in the United States. Although not Vermont's longest river, it is one of the state's most significant, forming a major valley way from Lake Champlain through the Green Mountains towards the Connecticut...

, and into Lake Champlain

Lake Champlain

Lake Champlain is a natural, freshwater lake in North America, located mainly within the borders of the United States but partially situated across the Canada—United States border in the Canadian province of Quebec.The New York portion of the Champlain Valley includes the eastern portions of...

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To the west, the gap is drained by Cota Brook, which drains into the New Haven River, Otter Creek, and into Lake Champlain.
In turn, Lake Champlain drains into the Richelieu River

Richelieu River

The Richelieu River is a river in Quebec, Canada. It flows from the north end of Lake Champlain about north, ending at the confluence with the St. Lawrence River at Sorel-Tracy, Quebec downstream and northeast of Montreal...

 in Québec

Quebec

Quebec or is a province in east-central Canada. It is the only Canadian province with a predominantly French-speaking population and the only one whose sole official language is French at the provincial level....

, thence into the Saint Lawrence River

Saint Lawrence River

The Saint Lawrence is a large river flowing approximately from southwest to northeast in the middle latitudes of North America, connecting the Great Lakes with the Atlantic Ocean. It is the primary drainage conveyor of the Great Lakes Basin...

, and into the Gulf of Saint Lawrence

Gulf of Saint Lawrence

The Gulf of Saint Lawrence , the world's largest estuary, is the outlet of North America's Great Lakes via the Saint Lawrence River into the Atlantic Ocean...

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The Long Trail

Long Trail

The Long Trail is a hiking trail located in Vermont, running the length of the state. It is the oldest long-distance trail in the United States, constructed between 1910 and 1930 by the Green Mountain Club...

, a 272-mile (438-km) hiking trail

Trail

A trail is a path with a rough beaten or dirt/stone surface used for travel. Trails may be for use only by walkers and in some places are the main access route to remote settlements...

 running the length of Vermont, crosses Lincoln Gap between Mount Grant

Mount Grant (Vermont)

Mount Grant is a mountain located in Addison County, Vermont, in the Green Mountain National Forest.The mountain is named after U.S. President Ulysses S...

, 3 mi (5 km) to the south, and Mount Abraham

Mount Abraham (Vermont)

Mount Abraham is the fifth tallest peak in the U.S. state of Vermont. The summit supports a small amount of alpine vegetation and offers a view of the Champlain Valley and Adirondack Mountains to the west. Mount Abraham is on the Long Trail, a hiking trail running the length of Vermont...

, 1.5 mi (3 km) to the north.