Updates#
Larimer County Commissioners Approve Permit for Halligan Project#
On March 24, 2025, Larimer County’s Board of County Commissioners unanimously voted to approve a 1041 permit for the Halligan Water Supply Project. This marks another permitting milestone for the City of Fort Collins.
The local 1041 permit allows Larimer County to designate conditions on the project before construction. Commissioners approved the Halligan Project permit with 53 conditions covering construction, environmental mitigation, and design review.
In 2026, the City expects to receive the Record of Decision from the U.S. Army Corps of Engineers thus completing the requirements of the National Environmental Policy Act.
Final Environmental Impact Statement Released#
On Oct. 23, 2023, the U.S. Army Corps of Engineers published a Notice of Availability for the Halligan Water Supply Project final Environmental Impact Statement in the Federal Register. This action is a significant milestone for Fort Collins Utilities and the Halligan Project. The project will provide added capacity in Halligan Reservoir to store Utilities’ water rights, enabling a more robust, resilient and reliable water supply for our current and future customers.
Fish and Wildlife Mitigation and Enhancement Plan Released#
In 2023, the Colorado Parks and Wildlife Commission and the Colorado Water Conservation Board approved the Fish and Wildlife Mitigation and Enhancement Plan. The approval marks a significant milestone for the Halligan Project.
The plan follows state law, which requires impacts be mitigated in a way that is ecologically reasonable and maintains a balance between the development of our water resources and the protection of our fish and wildlife.
2022 Year In Review#
From state and federal permitting to design work and dam concepts–see what was accomplished in 2022.
2021 Year In Review#
From state and federal permitting to preliminary design work and dam concepts–see what was accomplished in 2021.
2020 Year In Review#
From state and federal permitting to preliminary design work and stream gages–see what was accomplished in 2020.
Draft Environmental Impact Statement Released#
The draft Environmental Impact Statement (EIS) for the Halligan Water Supply Project was released on November 22, 2019. This milestone was crucial in the federal permitting process. The draft EIS provides a comprehensive description of the project, including other water supply alternatives considered, and outlines the potential impacts associated with each alternative. During the public engagement phase, a public hearing was conducted on Jan. 13, 2020, and the comment period remained open until Feb. 26, 2020, which included a 30-day extension granted by the U.S. Army Corps of Engineers. A copy of the draft EIS can be found online.
Conceptual Mitigation Plan Released#
The Conceptual Mitigation Plan for the Halligan Water Supply Project was released Nov. 22, 2019, with the draft EIS. A public hearing was held Jan. 13, 2020, and the comment period closed Feb. 26, 2020, which included a 30-day extension from the Corps.
Events#
There are no events scheduled at this time. Sign up for email updates to be notified of any up upcoming open houses, information sessions or public hearings.