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Project Status#

To enlarge Halligan Reservoir, the City of Fort Collins requires permits from the U.S. Army Corps of Engineers (Corps) and other federal, state and local agencies. Before issuing permits, the Corps produces an Environmental Impact Statement. The EIS describes the potential environmental impacts of the Halligan Water Supply Project, as well as other water supply alternatives considered to meet the City’s water storage needs. 

An EIS is released for public comment during the draft stage and again during the final stage. Following the EIS, a Record of Decision and permit will be issued by the Corps. The draft EIS was released Nov. 22, 2019 and the final EIS was released on Oct. 23, 2023.

The schedule is dependent on the needs and requirements of the various permits and subject to change.

View the Corps' website for EIS documents

The City of Fort Collins Entered the Permitting Process
Draft EIS Released by the U.S. Army Corps of Engineers
Final EIS Released by the U.S. Army Corps of Engineers
Record of Decision
Other Federal and State Permitting Complete
Final Design
Enlarged Halligan operations