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Coordinates: 47°58′42″N 103°58′56″W. The Yellowstone River is a tributary of the Missouri River, approximately 692 miles (1,114 km) long, in the Western United States.
Jun 10, 2021 · See the location of Yellowstone Caldera and the major rivers in Yellowstone National Park on this map. The map also shows the continental divide, which separates the watersheds of the Pacific Ocean and the Gulf of Mexico.
Yellowstone River, river, noted for its scenic beauty, in the western United States. It flows through northwestern Wyoming, southern and eastern Montana, and northwestern North Dakota over a course of 692 miles (1,114 km). The river system drains about 70,000 square miles (181,300 square km).
- The Editors of Encyclopaedia Britannica
Learn about the longest free-flowing river in the lower 48 states, its wildlife, recreation, and conservation challenges. See a map of the Yellowstone River watershed and its tributaries.
Jun 12, 2022 · Learn about the Yellowstone River, the longest and only undammed river in the lower 48 states, and its scenic beauty, waterfalls, and wildlife. See a map of its course and tributaries, and its threats and conservation efforts.
Dec 7, 2022 · Learn about the longest undammed river in the lower 48 states, flowing 671 miles from the Absaroka Mountain Range to the Missouri River. See maps, photos, and information about the river's ecology, geology, and history.
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Learn about the history, geography, and ecology of the Yellowstone River, the last major free-flowing river in the lower 48 states. Explore the headwaters, lake, waterfalls, canyons, and fishing sections of this remarkable treasure.