Landscapes & nature
South Platte River
River in Colorado and Nebraska in the United States
Wikipedia names South Platte River as where 1 film or series was filmed; its page links to the sentence that says so. Wikidata records no shoot here yet.

Filmed here, per Wikipedia
Wikipedia says these were filmed in South Platte River. Each title’s page links to the sentence that says so.
Filming locations nearby
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Towns & cities
Park County
United States · 12 km north
County in Colorado, United States
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Countries & regions
Colorado
United States · 21 km east
State of the United States of America
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Towns & cities
Fairplay
United States · 33 km north-west
Town in and county seat of Park County, Colorado, United States