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Issue Briefs

Aquatic Nuisance Species Program

Subject:
Natural Resources & Environment
Water
Published:
November 19, 2025
Agency:
Legislative Council Staff

Aquatic nuisance species (ANS) are invasive animals, plants, and disease-causing pathogens that can affect lakes, reservoirs, rivers, streams, and wetlands. This issue brief provides an explanation of ANS and an overview of the Colorado ANS Program.