The Rattle River is a 4.1 miles (6.6 km) river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 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 of the Androscoggin River

Androscoggin River

The Androscoggin River is a river in the U.S. states of Maine and New Hampshire, in northern New England. It is long and joins the Kennebec River at Merrymeeting Bay in Maine before its water empties into the Gulf of Maine on the Atlantic Ocean. Its drainage basin is in area...

, which flows east into 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...

, joining the Kennebec River

Kennebec River

The Kennebec River is a river that is entirely within the U.S. state of Maine. It rises in Moosehead Lake in west-central Maine. The East and West Outlets join at Indian Pond and the river then flows southward...

 near 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...

.

The Rattle River rises in the saddle

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...

 between Middle Moriah

Middle Moriah Mountain

Middle Moriah Mountain is a mountain located in Coos County, New Hampshire. The mountain is part of the Carter-Moriah Range of the White Mountains, which runs along the northern east side of Pinkham Notch. Middle Moriah is flanked to the northeast by Shelburne Moriah Mountain, and to the southwest...

 and Shelburne Moriah Mountain

Shelburne Moriah Mountain

Shelburne Moriah Mountain is a mountain located in Coos County, New Hampshire. The mountain is part of the Carter-Moriah Range of the White Mountains, which runs along the northern east side of Pinkham Notch. Shelburne Moriah is flanked to the southwest by Middle Moriah Mountain...

 in the town of Shelburne

Shelburne, New Hampshire

Shelburne is a town in Coos County, New Hampshire, United States. The population was 372 at the 2010 census. It is located in the White Mountains, and part of the White Mountain National Forest is in the south. Shelburne is home to Leadmine State Forest...

. The river (better described as a large brook

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...

) flows north to the Androscoggin, dropping from 2800 to 700 ft (853.4 to 213.4 ) above sea level over its length.

The Appalachian Trail

Appalachian Trail

The Appalachian National Scenic Trail, generally known as the Appalachian Trail or simply the AT, is a marked hiking trail in the eastern United States extending between Springer Mountain in Georgia and Mount Katahdin in Maine. It is approximately long...

follows the river from its source to the Androscoggin River valley.