Missouri River

Holter Lake, a reservoir on the upper Missouri River
The Missouri in North Dakota, which was the furthest upstream that French explorers traveled on the river
The Yellowstone River, the fifth longest tributary of the Missouri, which it joins in North Dakota
Nebraska's Fort Calhoun Nuclear Generating Station was inundated when the Missouri River flooded in 2011
High silt content makes the Missouri River (left) noticeably lighter than the Mississippi River (right) at their confluence north of St. Louis.
Karl Bodmer, A Mandan Village, c. 1840–1843
Massacre of the Villasur Expedition, painted c. 1720
Map of western North America drawn by Lewis and Clark
Fur Traders on Missouri River, painted by George Caleb Bingham c. 1845
Fort Clark on the Missouri in February 1834, painted by Karl Bodmer
Boatmen on the Missouri c. 1846
Karl Bodmer, Fort Pierre and the Adjacent Prairie, c. 1833, -- the river, river bluffs and floodplain are depicted around the fort settlement
Holter Dam, a run-of-the-river structure on the upper Missouri, shortly after completion in 1918
Black Eagle Dam is dynamited in 1908 to save Great Falls from the floodwave caused by the failure of Hauser Dam
Map showing major features of the Pick–Sloan Plan; other dams and their reservoirs are denoted by triangles
Fort Peck Dam, the uppermost dam of the Missouri River Mainstem System
Painting of the steamboat Yellowstone, one of the earliest commercial vessels to run on the river, circa 1833. The dangerous currents in the river caused the ship to run aground on a sandbar in this illustration.
The Far West is typical of the shallow-draft steamboats used to navigate the Missouri River. Famed captain and pilot Grant Marsh set several speed records, including one taking wounded soldiers from the surviving segments of the George Armstrong Custer expedition to get medical attention.
A barge travels North on the Missouri River at Highway 364 in Saint Charles, Missouri.
Gavins Point Dam at Yankton, South Dakota is the uppermost obstacle to navigation from the mouth on the Missouri today.
The Missouri River near New Haven, Missouri, looking upstream – note the riprap wing dam protruding into the river from the left to direct its flow into a narrower channel
The Missouri River at the confluence with the Floyd River in Sioux City, IA, near the upper most navigable reach of the river today
Freshwater ecoregions of the Missouri basin
Missouri River as it flows through Great Falls, Montana
Agricultural fields dominate most of the former floodplain, including this area around the Missouri's confluence with the Nishnabotna River in western Missouri.
Part of the Missouri National Recreational River, a 98 mi preserved stretch of the Missouri on the border of South Dakota and Nebraska

Longest river in the United States.

- Missouri River

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Missouri

State in the Midwestern region of the United States.

State in the Midwestern region of the United States.

The Gateway Arch in St. Louis
Fur Traders Descending the Missouri by Missouri painter George Caleb Bingham
The states and territories of the United States as a result of Missouri's admission as a state on August 10, 1821. The remainder of the former Missouri Territory became unorganized territory.
Price's Raid in the Trans-Mississippi Theater, 1864
Union Station in St. Louis was the world's largest and busiest train station when it opened in 1894.
Child shoe workers in Kirksville, Missouri, 1910
General John J. Pershing, commander of the American Expeditionary Forces in World War I, was raised in Laclede, Missouri.
African American boy in a sharecropper shack, New Madrid County, 1938.
A physiographic map of Missouri
The Bell Mountain Wilderness of southern Missouri's Mark Twain National Forest
Köppen climate types of Missouri
The Lake of the Ozarks is one of several man-made lakes in Missouri, created by the damming of several rivers and tributaries. The lake has a surface area of 54,000 acres and 1,150 miles of shoreline and has become a popular tourist destination.
Missouri River near Rocheport, Missouri
Missouri population density map
The population center for the United States has been in Missouri since 1980. As of 2020, it is near Interstate 44 in Missouri as it approaches Springfield.
Missouri State quarter featuring the Lewis and Clark expedition
Meramec Caverns
The Federal Reserve Bank of Kansas City services the western portion of Missouri, as well as all of Kansas, Oklahoma, Nebraska, Wyoming, Colorado, and northern New Mexico.
Amtrak station in Kirkwood
Kansas City Streetcar near Union Station
The Mississippi River at Hannibal
The Missouri State Capitol in Jefferson City
The Governor's Mansion is on the National Register of Historic Places.
Treemap of the popular vote by county, 2016 presidential election
Jesse Hall on the University of Missouri campus
Brookings Hall at Washington University in St. Louis
The historic Gem Theatre, located in Kansas City's renowned 18th and Vine Jazz District
Mark Twain's boyhood home in Hannibal
Missouri has four major sports teams: the Royals and Cardinals of MLB, the Chiefs of the NFL, and the Blues of the NHL.
A mural honoring the Kansas City Chiefs on the wall of the Westport Alehouse in Kansas City, MO.
The St. Louis Cardinals playing at Busch Stadium

The Missouri River, after which the state is named, flows through the center into the Mississippi River, which makes up the eastern border.

Great Falls, Montana

Third most populous city in the U.S. state of Montana and the county seat of Cascade County.

Third most populous city in the U.S. state of Montana and the county seat of Cascade County.

Downtown Great Falls
1891 bird's-eye illustration of Great Falls
Map of Montana showing Glacial Lake Great Falls
The smelter and dam at Great Falls c. 1910
Montana Flour Mills in Great Falls in 1920
Malmstrom Air Force Base in 1995
Warden Bridge
Great Falls, Montana products treemap, 2020
Gibson Park
Mermaids swimming in the pool of the Sip 'n' Dip lounge in Great Falls
Charles M. Russell High School

A cultural, commercial and financial center in the central part of the state, Great Falls is located just east of the Rocky Mountains and is bisected by the Missouri River.

Mississippi River

Second-longest river and chief river of the second-largest drainage system on the North American continent, second only to the Hudson Bay drainage system.

Second-longest river and chief river of the second-largest drainage system on the North American continent, second only to the Hudson Bay drainage system.

The beginning of the Mississippi River at Lake Itasca (2004)
Former head of navigation, St. Anthony Falls, Minneapolis, Minnesota
Confluence of the Wisconsin and Mississippi Rivers, viewed from Wyalusing State Park in Wisconsin
The Upper Mississippi River at its confluence with the Missouri River north of St. Louis
The confluence of the Mississippi (left) and Ohio (right) rivers at Cairo, Illinois, the demarcation between the Middle and the Lower Mississippi River
Lower Mississippi River near New Orleans
Map of the Mississippi River watershed
Sequence of NASA MODIS images showing the outflow of fresh water from the Mississippi (arrows) into the Gulf of Mexico (2004)
View along the former riverbed at the Tennessee/Arkansas state line near Reverie, Tennessee (2007)
In Minnesota, the Mississippi River runs through the Twin Cities (2007)
Community of boathouses on the Mississippi River in Winona, MN (2006)
The Mississippi River at the Chain of Rocks just north of St. Louis (2005)
A low-water dam deepens the pool above the Chain of Rocks Lock near St. Louis (2006)
The Stone Arch Bridge, the Third Avenue Bridge and the Hennepin Avenue Bridge in Minneapolis (2004)
The Dubuque-Wisconsin Bridge (2004)
The Chain of Rocks Bridge at St. Louis, Missouri
The Hernando de Soto Bridge in Memphis, Tennessee (2009)
Vicksburg Bridge
Towboat and barges at Memphis, Tennessee
Ships on the lower part of the Mississippi
Oil tanker on the Lower Mississippi near the Port of New Orleans
Barge on the Lower Mississippi River
Lock and Dam No. 11, north of Dubuque, Iowa (2007)
Lock and Dam No. 2, near Hastings, Minnesota (2007)
Lock and Dam No. 15, is the largest roller dam in the world Davenport, Iowa; Rock Island, Illinois. (1990)
Formation of the Atchafalaya River and construction of the Old River Control Structure.
Project design flood flow capacity for the Mississippi river in thousands of cubic feet per second.
Soldiers of the Missouri Army National Guard sandbag the River in Clarksville, Missouri, June 2008, following flooding.
Discovery of the Mississippi by De Soto A.D. 1541 by William Henry Powell depicts Hernando de Soto and Spanish Conquistadores seeing the Mississippi River for the first time.
Map of the French settlements (blue) in North America in 1750, before the French and Indian War (1754 to 1763).
Ca. 1681 map of Marquette and Jolliet's 1673 expedition.
Route of the Marquette-Jolliete Expedition of 1673
A Home on the Mississippi (1871)
Shifting sand bars made early navigation difficult.
Battle of Vicksburg (ca. 1888)
Mississippi River from Eunice, Arkansas, a settlement destroyed by gunboats during the Civil War.
Campsite at the river in Arkansas
The Old River Control Structure complex. View is to the east-southeast, looking downriver on the Mississippi, with the three dams across channels of the Atchafalaya River to the right of the Mississippi. Concordia Parish, Louisiana is in the foreground, on the right, and Wilkinson County, Mississippi, is in the background, across the Mississippi on the left.
Great River Road in Wisconsin near Lake Pepin (2005)
The American paddlefish is an ancient relict from the Mississippi

In the 19th century, during the height of the ideology of manifest destiny, the Mississippi and several western tributaries, most notably the Missouri, formed pathways for the western expansion of the United States.

Yellowstone River

The river steamer Expansion on the Yellowstone River in Montana, 1907

The Yellowstone River is a tributary of the Missouri River, approximately 692 mi long, in the Western United States.

Montana

State in the Mountain West subregion of the Western United States.

State in the Mountain West subregion of the Western United States.

Early Indian treaty territories in Montana
Assiniboine family, Montana, 1890–91
Montana Territory in 1865
Chief Joseph and Col. John Gibbon met again on the Big Hole Battlefield site in 1889.
Buffalo Soldiers, Ft. Keogh, Montana, 1890. The nickname was given to the "Black Cavalry" by the Native American tribes they fought.
Mennonite family in Montana, c. 1937
Map of Montana
Relief map of Montana
Saint Mary Lake in Glacier National Park
Belly River in Waterton Lakes National Park
Missouri Breaks region in central Montana
Pompeys Pillar National Monument
Quake Lake was created by a landslide during the 1959 Hebgen Lake earthquake.
Temperature and precipitation for Montana's capital city, Helena
Köppen climate types of Montana, using 1991-2020 climate normals.
Clark Fork River, Missoula, in autumn
Missoula, the second-largest city in Montana
Montana population density map
Population of Montana 1870–2018
Indian reservations in Montana. Borders are not exact.
Montana ranks 2nd nationally in craft breweries per capita.
First Interstate Center, in downtown Billings, is the tallest building in Montana.
Dancers at Crow Fair in 1941
Montana State Bobcats football at Bobcat Stadium (Montana State University), Bozeman
Lone Mountain at Big Sky Ski Resort
The Big Sky Resort
The Palisades area on the north end of the ski area at Red Lodge Mountain Resort
Guided snowmobile tours in Yellowstone Park
Yellowstone Airport, West Yellowstone, Montana
Treemap of the popular vote by county, 2016 presidential election

As part of the Missouri River watershed, all of the land in Montana east of the Continental Divide was part of the Louisiana Purchase in 1803.

Bismarck, North Dakota

Capital of the U.S. state of North Dakota and the county seat of Burleigh County.

Capital of the U.S. state of North Dakota and the county seat of Burleigh County.

Bismarck from International Space Station, 2007
Downtown Bismarck: Patterson Place (built in 1911 as the McKenzie Hotel) was the tallest building in the state until construction of the capitol building. Originally operated as a luxury hotel, it has been adapted for senior housing and a retail restaurant.
Northern Pacific Railway Depot, built in 1901 using the Mission Revival style

Bismarck was founded by European-Americans in 1872 on the east bank of the Missouri River.

Williston, North Dakota

City in and the county seat of Williams County, North Dakota, United States.

City in and the county seat of Williams County, North Dakota, United States.

Gas station at Farmers' Cooperative in Williston, 1941. Photo by Marion Post Wolcott.
Williston, North Dakota Amtrak Station; the railroad is a popular way for migrants to reach the city.
A woman photographed in Williston in 1937 by Russell Lee
US 2 and US 85 at Williston

Williston is located at the crossroads of U.S. Highways 2 and 85, near the confluence of the Yellowstone and Missouri rivers, at the upper end of the Lake Sakakawea reservoir.

Sioux City, Iowa

City in Woodbury and Plymouth counties in the northwestern part of the U.S. state of Iowa.

City in Woodbury and Plymouth counties in the northwestern part of the U.S. state of Iowa.

Waterfront, circa 1912
1859 map of route from Sioux City, Iowa, through Nebraska, to gold fields of Wyoming, partially following old Mormon trails.
Historic Fourth Street, Downtown.
Hard Rock Hotel & Casino Sioux City
Woodbury County Courthouse
The Floyd River in Sioux City
Confluence of the Missouri and Floyd River in Sioux City
Sergeant Floyd Monument
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Stone State Park
Tyson Events Center, with Fleet Farm Arena to the left and Longlines Family Recreation Center to the right
Sioux City native Pauline (Friedman) Phillips, who used the pen name of Abigail Van Buren for her advice column "Dear Abby", was the twin sister of Esther (Friedman) Lederer, the author of the competing Ann Landers column.

Sioux City is located at the navigational head of the Missouri River.

Nebraska

State in the Midwestern region of the United States.

State in the Midwestern region of the United States.

Nebraska in 1718, Guillaume de L'Isle map, with the approximate area of the future state highlighted
Homesteaders in central Nebraska in 1888
A map of Nebraska
Nebraska National Forest
Köppen climate types of Nebraska, using 1991-2020 climate normals.
Winter at Scotts Bluff National Monument
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Nebraska grain bins and elevator
A cropduster in agrarian Nebraska, far west of Omaha
Treemap of the popular vote by county, 2016 presidential election
The Nebraska State Capitol in Lincoln
Football game at the University of Nebraska on September6, 2008

It is bordered by South Dakota to the north; Iowa to the east and Missouri to the southeast, both across the Missouri River; Kansas to the south; Colorado to the southwest; and Wyoming to the west.

Iowa

Excavation of the 3,800-year-old Edgewater Park Site
Iowa in 1718 with the modern state area highlighted
Iowa Territorial Seal
Bellevue along the Mississippi, 1848
Topography of Iowa, with counties and major streams
DeSoto Lake at DeSoto National Wildlife Refuge
Landforms of Iowa, based on Prior (1991)
Köppen climate types of Iowa, using 1991-2020 climate normals.
Iowa annual rainfall, in inches
Percent population changes by counties in Iowa, 2000–2009. Dark green counties have gains of more than 5%.
Iowa population density map
Population age comparison between rural Pocahontas County and urban Polk County, illustrating the flight of young adults (red) to urban centers in Iowa
Amana Colonies were founded by German Pietists.
The Christina Reiman Butterfly Wing at Iowa State University, Ames
Skyline of Des Moines, Iowa's capital and largest city
Old Capitol, Iowa City
Inside the Davenport Skybridge
Brucemore, Cedar Rapids, Iowa
Historic Fourth Street, Sioux City
Loess Hills east of Mondamin
The Iowa Great Lakes located primarily in Dickinson County, in the northwestern section of Iowa near the Minnesota border.
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Ruins of historic Fort Atkinson
Wood-heated floating sauna on the farm pond
Iowa gross state products by industry, 2009
Harvesting corn in Jones County
Farm in rural Northwest Iowa
Central Iowa cornfield and dairy in June
Mural in Mt. Ayr Post Office, "The Corn Parade" by Orr C. Fischer, commissioned as part of the New Deal
Ethanol plant under construction in Butler County
Wind turbines near Williams
Palmer Chiropractic College in Davenport is the first school of chiropractic in the world.
Iowa's major interstates, larger cities, and counties
The Iowa State Capitol in Des Moines, completed in 1886, is the only state capitol in the United States to feature five domes, a central golden dome surrounded by four smaller ones. It houses the Iowa General Assembly, comprising the Iowa House of Representatives and Iowa Senate.
The Iowa Supreme Court, across from the capitol, is the state's highest court.
Samuel J. Kirkwood, founder of the Iowa Republican Party, abolitionist, and Iowa's Civil War Governor
The Union Block building, Mount Pleasant, scene of early civil rights and women's rights activities
Schaeffer Hall (University of Iowa, Iowa City)
Riverside's "favorite son"
South End Zone of Iowa State University's Jack Trice Stadium in Ames, IA.
Modern Woodmen Park is home to the Quad Cities baseball team.
President Herbert Hoover
Vice President Henry Wallace

Iowa is a state in the Midwestern region of the United States, bordered by the Mississippi River to the east and the Missouri River and Big Sioux River to the west.