Halligan Water Supply Project || City of Fort Collins

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halligan@fcgov.com

Eileen Dornfest
970-416-4296

Halligan and NISPHalligan and NISP

Halligan and NISP

The Halligan Water Supply Project and the Northern Integrated Supply Project (NISP), which includes the proposed Glade Reservoir, are two separate water supply projects. The Halligan Project is sponsored by the City of Fort Collins, while NISP is sponsored by Northern Water on behalf of 15 northern Colorado water providers. More information on NISP can be found here:

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Project Overview

Halligan Reservoir

Halligan Reservoir is an existing reservoir on the North Fork of the Poudre River, 25 miles northwest of Fort Collins.

If approved, the Halligan Water Supply Project will enlarge Halligan Reservoir by approximately 8,100 acre-feet to meet the demand of future Fort Collins Utilities' water customers and provide increased reliability for existing customers to help protect against service interruptions related to prolonged drought and emergencies.

The project will help:

Provide a storage reserve for emergency water supply disruptions
Increase drought security
Improve water system reliability and flexibility
Meet future water demands of the Fort Collins Utilities' water service area

The U.S. Army Corps of Engineers (Corps) released a draft Environmental Impact Statement (EIS) in November 2019. The Corps will develop a final EIS before making a permitting decision on if Halligan Reservoir can be expanded.

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Explore Halligan Reservoir

Existing Halligan Dam

Aerial image of North Fork of the Poudre River

North Fork of the Poudre River downstream of Halligan Reservoir in July

Halligan Reservoir

North Fork of the Poudre River downstream of Halligan Reservoir. Currently, the river runs dry several months out of the year. The Halligan Water Supply Project would restore minimum flows year-round to this part of the river, improving the river and surrounding habitat.