Cannonball River

The Cannonball River (Lakota: Íŋyaŋwakağapi Wakpá^[2]) is a tributary of the Missouri River, approximately 135 miles (217 km) long, in southwestern North Dakota in the United States.^[3]

Cannonball River
The Cannonball River
Physical characteristics
Source
• location	Slope County in White Lake National Wildlife Refuge
• coordinates	46°28′12″N 103°12′24″W
• elevation	2,780 ft (850 m)
Mouth
• location	Confluence with Missouri River in Lake Oahe
• coordinates	46°25′45″N 100°35′21″W
• elevation	1,611 ft (491 m)
Length	135 mi (217 km)
Discharge
• location	Breien
• average	250 cu ft/s (7.1 m3/s)[1]
Basin features
Progression	Cannonball River → Missouri → Mississippi → Gulf of Mexico
GNIS ID	1035898

It rises in the Little Missouri National Grassland, in the badlands north of Amidon in northern Slope County. It flows ESE past New England, Mott, and Burt. It is joined by Cedar Creek approximately 15 miles (24 km) southwest of Shields and flows northeast, past Shields, forming the northern border of Sioux County and the Standing Rock Sioux Reservation. It joins the Missouri in Lake Oahe near Cannon Ball. The cannonball concretions found in the vicinity of this river are the source of its name.^[4]

See also

• List of rivers of North Dakota