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Garrison Dam

(Encyclopedia) Garrison Dam, c.11,300 ft (3,400 m) long and 210 ft (64 m) high, on the Missouri River, near Riverdale, W central N.Dak.; one of the world's largest earth-filled dams used for…

Cheyenne, river, United States

(Encyclopedia) Cheyenne, river, 527 mi (848 km) long, rising in E Wyo. and flowing NE to the Missouri River near Pierre, S.Dak. The Cheyenne basin is part of the Missouri River basin project. The U.S…

Marias

(Encyclopedia) MariasMariasmərīˈəz [key], river, c.210 mi (340 km) long, rising in several branches in NW Montana near the Continental Divide and flowing SE to the Missouri River near Fort Benton. It…

Heart, river, United States

(Encyclopedia) Heart, river, 180 mi (290 km) long, rising in the low prairie country near the Little Missouri River, SW N.Dak., and flowing E to the Missouri at Mandan, N.Dak. The Heart Butte and…

Pierre

(Encyclopedia) PierrePierrepēr [key], city (1990 pop. 12,906), state capital (since 1889) and seat of Hughes co., central S.Dak., on the east bank of the Missouri River, opposite Fort Pierre; inc.…

Oahe Dam

(Encyclopedia) Oahe DamOahe Damōwäˈhē [key], major unit of the Missouri River basin project, 242 ft (74 m) high and 9,360 ft (2,853 m) long, on the Missouri River, central S.Dak., near Pierre; built…

Yankton, city, United States

(Encyclopedia) Yankton, city (1990 pop. 12,703), seat of Yankton co., extreme SE S.Dak., on the Missouri River; inc. 1869. A railroad and trade center in an agricultural region, it has grain…

Fort Peck Dam

(Encyclopedia) Fort Peck Dam, 21,430 ft (6,531 m) long and 250 ft (76 m) high, on the Missouri River, NE Mont.; one of the world's largest earth-filled dams. The dam was built (1933–40) by the U.S.…

Grand River, rivers, United States

(Encyclopedia) Grand River. 1 River, 260 mi (418 km) long, rising in S Mich. and flowing N to Lansing, then NW to Lake Michigan at Grand Haven. It is the longest river in the state and is navigable…

Missouri, river, United States

(Encyclopedia) Missouri, river, c.2,565 mi (4,130 km) long (including its Jefferson-Beaverhead-Red Rock headstream), the longest river of the United States and the principal tributary of the…