Chimney Hollow Reservoir Project

The Chimney Hollow Reservoir Project is a collaboration between 12 Northeastern Colorado water providers to improve the reliability of, or make firm, water supplies from the Windy Gap Project. Chimney Hollow Reservoir will be located just west of Carter Lake in Larimer County to provide dedicated storage to supply a reliable 30,000 acre-feet of water each year for future generations.  

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Provides storage for 30,000 acre-feet of existing water rights associated with the Windy Gap Project

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Provides environmental benefits to Colorado's rivers and streams through various commitments

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Enhances recreation opportunities to encourage healthy, outdoor lifestyles for residents

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Helps meet an increased demand for water in Northern Colorado communities

Snow-covered view of the Chimney Hollow site.

Holiday Site Closure and Winter Construction Hours

The site will be shut down from Dec. 24-Jan. 2 for the holidays. Crews will continue to work throughout the winter 24 hours a day, six days a week.

Chimney Hollow Project Nearing Operational Readiness

Northern Water’s Municipal Subdistrict staff and key project contractors are making great progress on getting the Chimney Hollow Reservoir Project ready for operations in 2025.

Employee Spotlight: Jordan Hall

As an Earthworks Project Manager for Barnard Construction, Jordan Hall oversees many of the key features of the Chimney Hollow construction project.