Aspen Brook (Colorado)
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|Mouth||Confluence with Big Thompson
|Mouth elevation||7,779 ft (2,371 m)|
The Aspen Brook is a 3.9-mile-long (6.3 km) tributary of the Big Thompson River in Larimer County, Colorado. The stream's source is near Wind River Pass. It flows north to a confluence with the Big Thompson in Rocky Mountain National Park.