Great Falls is a city in and the county seat

County seat

A county seat is an administrative center, or seat of government, for a county or civil parish. The term is primarily used in the United States....

 of Cascade County

Cascade County, Montana

-National protected areas:*Benton Lake National Wildlife Refuge*Lewis and Clark National Forest -Economy:Malmstrom Air Force Base is a driving force in the regional economy...

, Montana

Montana

Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...

, United States

United States

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

. The population was 58,505 at the 2010 census

United States Census, 2010

The Twenty-third United States Census, known as Census 2010 or the 2010 Census, is the current national census of the United States. National Census Day was April 1, 2010 and is the reference date used in enumerating individuals...

. It is the principal city of the Great Falls, Montana Metropolitan Statistical Area

United States metropolitan area

In the United States a metropolitan statistical area is a geographical region with a relatively high population density at its core and close economic ties throughout the area. Such regions are not legally incorporated as a city or town would be, nor are they legal administrative divisions like...

, which encompasses all of Cascade County. Great Falls takes its name from the series of five waterfall

Waterfall

A waterfall is a place where flowing water rapidly drops in elevation as it flows over a steep region or a cliff.-Formation:Waterfalls are commonly formed when a river is young. At these times the channel is often narrow and deep. When the river courses over resistant bedrock, erosion happens...

s in close proximity along the upper Missouri River basin

Basin

Basin may refer to:* Basin , a poem about Charlemagne's childhood* basin , the area of a drydock which can be flooded and drained* basin of attraction , an area of a nonlinear system with an attractor...

 that the Lewis and Clark Expedition

Lewis and Clark Expedition

The Lewis and Clark Expedition, or ″Corps of Discovery Expedition" was the first transcontinental expedition to the Pacific Coast by the United States. Commissioned by President Thomas Jefferson and led by two Virginia-born veterans of Indian wars in the Ohio Valley, Meriwether Lewis and William...

 had to portage around over a ten mile stretch; the effort required 31 days of arduous labor during the westward leg of their 1805-06 exploration of the Louisiana Purchase

Louisiana Purchase

The Louisiana Purchase was the acquisition by the United States of America of of France's claim to the territory of Louisiana in 1803. The U.S...

 and to the Pacific Northwest

Pacific Northwest

The Pacific Northwest is a region in northwestern North America, bounded by the Pacific Ocean to the west and, loosely, by the Rocky Mountains on the east. Definitions of the region vary and there is no commonly agreed upon boundary, even among Pacific Northwesterners. A common concept of the...

 Coast of the Oregon Country

Oregon Country

The Oregon Country was a predominantly American term referring to a disputed ownership region of the Pacific Northwest of North America. The region was occupied by British and French Canadian fur traders from before 1810, and American settlers from the mid-1830s, with its coastal areas north from...

.