Yellowstone River
Yellowstone River is a major tributary of the Missouri River, flowing through northwest Wyoming, southern Montana, and eastern North Dakota. This 670+ mile waterway carves dramatic canyons and supports diverse ecosystems.
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Geography
| Continent | North America |
|---|---|
| Region | Mountain West |
| Subregion | Western United States |
| Country | United States |
| State | WyomingMontanaNorth Dakota |
| County | Park CountyGallatin CountyBighorn CountyYellowstone CountyCuster CountyBowman County |
| District | Yellowstone National Park |
| Timezone | AmericaChicago |
| Latitude | 45.65 |
| Longitude | -110.5 |
| Maps |
8:14 PM LOCAL TIMEYellowstone River begins as a clear, snow-fed stream in the northern reaches of Yellowstone National Park, threading parallels with the park boundary before entering northwest Wyoming. It widens and deepens as it travels into Montana, where it becomes a vital migratory corridor and provides water for agriculture and cities. The river then crosses into North Dakota, merging with the Missouri and shaping broad floodplains. Visitors and anglers alike enjoy access along its length, with activities from trail-based fishing to river rafting. Key tributaries include the Gardner and Stillwater Rivers, and the landscape transitions from canyon walls to plains, reflecting its role as a major regional waterway.
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