The New River is a 2.2 mile long (3.6 km) stream

Stream

A stream is a body of water with a current, confined within a bed and stream banks. Depending on its locale or certain characteristics, a stream may be referred to as a branch, brook, beck, burn, creek, "crick", gill , kill, lick, rill, river, syke, bayou, rivulet, streamage, wash, run or...

 in the White Mountains

White Mountains (New Hampshire)

The White Mountains are a mountain range covering about a quarter of the state of New Hampshire and a small portion of western Maine in the United States. Part of the Appalachian Mountains, they are considered the most rugged mountains in New England...

 of New Hampshire

New Hampshire

New Hampshire is a state in the New England region of the northeastern United States of America. The state was named after the southern English county of Hampshire. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Atlantic Ocean to the east, and the Canadian...

 in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It is a tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 of the Ellis River, part of the Saco River

Saco River

The Saco River is a river in northeastern New Hampshire and southwestern Maine in the United States. It drains a rural area of of forests and farmlands west and southwest of Portland, emptying into the Atlantic Ocean at Saco Bay, from its source. It supplies drinking water to roughly 250,000...

 watershed

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 flowing to the Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

 in Maine

Maine

Maine is a state in the New England region of the northeastern United States, bordered by the Atlantic Ocean to the east and south, New Hampshire to the west, and the Canadian provinces of Quebec to the northwest and New Brunswick to the northeast. Maine is both the northernmost and easternmost...

.

The New River rises in the Gulf of Slides, a small glacial cirque

Cirque (landform)

thumb|250 px|Two cirques with semi-permanent snowpatches in [[Abisko National Park]], [[Sweden]].A cirque or corrie is an amphitheatre-like valley head, formed at the head of a valley glacier by erosion...

 at the foot of Boott Spur

Boott Spur

Boott Spur is a minor peak located in Coos County, New Hampshire. The mountain is named after Dr. Francis Boott , and is part of the Presidential Range of the White Mountains...

, a southern extension of Mount Washington

Mount Washington (New Hampshire)

Mount Washington is the highest peak in the Northeastern United States at , famous for dangerously erratic weather. For 76 years, a weather observatory on the summit held the record for the highest wind gust directly measured at the Earth's surface, , on the afternoon of April 12, 1934...

. Flowing northeast, the stream drops rapidly down the western slopes of Pinkham Notch

Pinkham Notch

Pinkham Notch is a mountain pass in the White Mountains of north-central New Hampshire, United States. The notch is a result of extensive erosion by the Laurentide ice sheet during the Wisconsinian ice age. Pinkham Notch was eroded into a glacial U-shaped valley whose walls are formed by the...

, joining the Ellis River in the floor of the notch at the Route 16

New Hampshire Route 16

New Hampshire Route 16 is a long north–south highway in the U.S. state of New Hampshire. Much of its length is close to the border with Maine. NH 16 is the main route from the Seacoast region north to the Lakes Region and the White Mountains. The section from Portsmouth to Milton is a...

 crossing, just south of the notch's height of land

Water divide

A drainage divide, water divide, divide or watershed is the line separating neighbouring drainage basins...

.