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Eurasian Watermilfoil
Year-Round Closures
Closure
Reason
Wildlife Closure
Comment
Boulder Reservoir is closed year-round to prevent the spread of invasive Eurasian Watermilfoil.
https://bouldercolorado.gov/news/eurasian-watermilfoil-aquatic-invasive-plant-species-has-been-confirmed-boulder-reservoir
When
Now
until further notice
Posted by
COTREX
Last Updated
Jul 30, 2025
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