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

Final Chimney Hollow Virtual Tour

In the final virtual tour, the project team gives a look at the project nearly complete, as well as an overview on what it's like to demobilize a project of this size.

Chimney Hollow Reservoir logo with valley in background.

Initial Water Delivery into Chimney Hollow Reservoir Delayed

Northern Water and the Chimney Hollow participants have decided to allow more time to gather additional water quality data before initial delivery of water into Chimney Hollow Reservoir.

Chimney Hollow Reservoir Project Wins West Regional Dam Safety Award

The award recognizes projects that make exemplary contributions to the improvement of dam safety in the United States.