Little Missouri River

Little Missouri River. The Little Missouri River is a significant tributary of the Missouri River, stretching approximately 560 miles through the Great Plains region of the United States. It flows through the states of Montana, North Dakota, and South Dakota, passing near notable landmarks such as Makoshika State Park and the Theodore Roosevelt National Park. The river's watershed covers a vast area, including parts of the Fort Peck Indian Reservation and the Little Missouri National Grassland, which is managed by the United States Forest Service.

Geography

The Little Missouri River originates in the Bear Mountains of Montana, near the town of Alzada, Montana, and flows southeast through the Prairie Pothole Region. The river's path takes it through a diverse range of landscapes, including the Badlands of North Dakota and the Black Hills of South Dakota. Along its course, the river passes near several notable geographic features, such as Lake Sakakawea, Lake Oahe, and the White Butte, which is the highest point in North Dakota. The river's valley is also home to several important United States Geological Survey (USGS) stream gauges, including those at Williston, North Dakota, and Marmarth, North Dakota.

Course

The Little Missouri River flows through a variety of different landscapes and ecosystems, including the Great Plains, the Badlands, and the Black Hills. The river's course takes it through several notable National Wildlife Refuges, including the Charles M. Russell National Wildlife Refuge and the Lake Alice National Wildlife Refuge. The river also passes near several important United States Army Corps of Engineers (USACE) dams, including the Garrison Dam and the Oahe Dam. The river's mouth is located near the town of Williston, North Dakota, where it empties into the Missouri River, which is a major tributary of the Mississippi River and flows through several notable cities, including Omaha, Nebraska, Kansas City, Missouri, and St. Louis, Missouri.

Hydrology

The Little Missouri River's hydrology is characterized by a variable flow regime, with peak flows typically occurring during the spring and early summer months. The river's watershed is home to several important United States Bureau of Reclamation (USBR) projects, including the Garrison Diversion Unit and the Pick-Sloan Missouri Basin Program. The river's flow is also influenced by several notable United States Geological Survey (USGS) stream gauges, including those at Williston, North Dakota, and Marmarth, North Dakota. The river's water quality is monitored by several organizations, including the Environmental Protection Agency (EPA) and the North Dakota Department of Environmental Quality.

History

The Little Missouri River has a rich and varied history, with evidence of human presence in the region dating back thousands of years. The river was an important transportation route for several Native American tribes, including the Mandan, Hidatsa, and Arikara. The river was also a key route for early European-American explorers, including Meriwether Lewis and William Clark, who traveled up the Missouri River and its tributaries, including the Little Missouri River, during their Corps of Discovery expedition. The river's valley was also home to several notable United States Army forts, including Fort Buford and Fort Union Trading Post National Historic Site.

Ecology

The Little Missouri River's ecosystem is characterized by a diverse range of plant and animal species, including several notable endangered species, such as the pallid sturgeon and the least tern. The river's watershed is home to several important National Park Service (NPS) units, including the Theodore Roosevelt National Park and the Little Bighorn Battlefield National Monument. The river's water quality is also influenced by several notable Environmental Protection Agency (EPA) programs, including the Clean Water Act and the Safe Drinking Water Act. The river's ecosystem is also home to several notable United States Fish and Wildlife Service (USFWS) refuges, including the Charles M. Russell National Wildlife Refuge and the Lake Alice National Wildlife Refuge. Category:Rivers of the United States