The Milk River is a

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drai ...

of the Missouri River, long, in the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sove ...

Montana Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columb ...

and the Canadian province of

Alberta Alberta ( ) is one of the thirteen provinces and territories of Canada. It is part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to the west, Saskatchewan to the east, the Northwest Ter ...

. Rising in the

Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in straight-line distance from the northernmost part of western Canada, to New Mexico ...

, the river drains a sparsely populated, semi-arid watershed of , ending just east of Fort Peck, Montana.

Geography

It is formed in Glacier County in northwestern Montana, north of

Browning, Montana Browning is a town in Glacier County, Montana, United States. It is the headquarters for the Blackfeet Indian Reservation and the only incorporated town on the Reservation. The population was 1,018 at the 2020 census. The town was named in 188 ...

, by the confluence of its South and Middle forks. The long South Fork and long Middle Fork both rise in the

just east of Glacier National Park, in the

Blackfeet Indian Reservation The Blackfeet Nation ( bla, Aamsskáápipikani, script=Latn, ), officially named the Blackfeet Tribe of the Blackfeet Indian Reservation of Montana, is a federally recognized tribe of Siksikaitsitapi people with an Indian reservation in Mon ...

. Much of the water in the North Fork is diverted from the St. Mary River through a canal and

inverted siphon A siphon (from grc, σίφων, síphōn, "pipe, tube", also spelled nonetymologically syphon) is any of a wide variety of devices that involve the flow of liquids through tubes. In a narrower sense, the word refers particularly to a tube in a ...

. The main stream flows east-northeast into southern Alberta, where it is joined by the North Fork of the Milk River, from there It flows past the town of Milk River and

Writing-on-Stone Provincial Park Writing-on-Stone Provincial Park is located about southeast of Lethbridge, Alberta, Canada, or east of the community of Milk River, and straddles the Milk River itself. It is one of the largest areas of protected prairie in the Alberta park sy ...

, then turns southeast into Montana, running east along the north side of the Sweetgrass Hills, turning south, passing through the Fresno Dam, then east past Havre and along the north side of the Fort Belknap Indian Reservation. Near

Malta Malta ( , , ), officially the Republic of Malta ( mt, Repubblika ta' Malta ), is an island country in the Mediterranean Sea. It consists of an archipelago, between Italy and Libya, and is often considered a part of Southern Europe. It lies ...

, it turns north, then southeast, flowing past

Glasgow Glasgow ( ; sco, Glesca or ; gd, Glaschu ) is the most populous city in Scotland and the fourth-most populous city in the United Kingdom, as well as being the 27th largest city by population in Europe. In 2020, it had an estimated popul ...

and joining the Missouri in

Valley County, Montana Valley County is a county in the U.S. state of Montana. Valley County was created in 1893 with area partitioned from Dawson County. As of the 2020 census, the population was 7,578. Its county seat is Glasgow. It is located on the Canada–Uni ...

, downstream from

Fort Peck Dam The Fort Peck Dam is the highest of six major dams along the Missouri River, located in northeast Montana in the United States, near Glasgow, and adjacent to the community of Fort Peck. At in length and over in height, it is the largest h ...

. The watershed of the river extends into the Canadian provinces of Alberta and

Saskatchewan Saskatchewan ( ; ) is a province in western Canada, bordered on the west by Alberta, on the north by the Northwest Territories, on the east by Manitoba, to the northeast by Nunavut, and on the south by the U.S. states of Montana and North Dak ...

and the US state of Montana. The watershed of the river covers an area of . Of this lies in Alberta, in Saskatchewan and the remaining in Montana. The area in Alberta and Saskatchewan is one of the only parts of the

Mississippi River The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it fl ...

watershed that extends into Canada.

History

The Milk River was given its name by Captain Meriwether Lewis, of the

Lewis and Clark Expedition The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the United States expedition to cross the newly acquired western portion of the country after the Louisiana Purchase. The Corps of Discovery was a select gr ...

, who described the river in his journal: This appearance results from clays and silts suspended in its waters. These fine-grained sediments result from the erosion of soft clay-rich rocks along the Milk River basin in southern Alberta, such as the Foremost, Oldman and

Dinosaur Park Dinosaur Park is a tourist attraction in Rapid City, South Dakota, United States. Dedicated on May 22, 1936, it contains seven dinosaur sculptures on a hill overlooking the city, created to capitalize on the tourists coming to the Black Hills to s ...

formations. At the time of Lewis's exploration, the Milk River drainage was legally part of the United States as a component of the

Louisiana Purchase The Louisiana Purchase (french: Vente de la Louisiane, translation=Sale of Louisiana) was the acquisition of the territory of Louisiana by the United States from the French First Republic in 1803. In return for fifteen million dollars, or app ...

. However, in 1818 U.S. negotiators swapped a portion of the Milk River watershed that lay north of 49° north latitude, receiving in exchange for a parcel of

Red River of the North The Red River (french: rivière Rouge or ) is a river in the north-central United States and central Canada. Originating at the confluence of the Bois de Sioux and Otter Tail rivers between the U.S. states of Minnesota and North Dakota, it fl ...

drainage that had previously been part of

British North America British North America comprised the colonial territories of the British Empire in North America from 1783 onwards. English colonisation of North America began in the 16th century in Newfoundland, then further south at Roanoke and Jamestow ...

. In 1908, the waters of the Milk River were the subject of a

United States Supreme Court The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that involve a point o ...

case clarifying the

water rights Water right in water law refers to the right of a user to use water from a water source, e.g., a river, stream, pond or source of groundwater. In areas with plentiful water and few users, such systems are generally not complicated or contentiou ...

of American

Indian reservations An Indian reservation is an area of land held and governed by a federally recognized Native American tribal nation whose government is accountable to the United States Bureau of Indian Affairs and not to the state government in which it ...

. The case is known as '' Winters v. United States''.

References

External links

Lewis & Clark - Glasgow and the Milk River
{{DEFAULTSORT:Milk River (Alberta-Montana) Lewis and Clark Expedition Rivers of Alberta Rivers of Montana Tributaries of the Missouri River International rivers of North America Rivers of Glacier County, Montana

Geography

History

See also

References

External links