News

Crews working at night on the right abutment of the main dam.

Night Work at Chimney Hollow

Chimney Hollow never sleeps. Neighbors in the area will notice lights and dust as work continues through the night.

New Video Provides Snapshot of Accomplishments 1 Year into Chimney Hollow Construction

Project Manager Joe Donnelly touches on some of the milestones achieved during Chimney Hollow Reservoir’s first year of construction.

Crews pour concrete on a steep section of the plinth on the right abutment.

Plinth Crews Work at 29-Degree Angle on the Right Abutment

Crews are currently working on a very technical, difficult section of the reinforced concrete plinth at Chimney Hollow Reservoir on the right (east) abutment at a 29-degree slope.

Crews installing the 72-inch butterfly valve at the Bald Mountain Interconnect.

Crews Place First Valve for the Chimney Hollow Conduit

On July 7, the first of 61 valves was placed on-site as part of the conduit that will bring water into the reservoir.

A tour group looks at the site from an overlook location east of the construction site.

Open Lands and Recreation Opportunities

In just a few years, Chimney Hollow Reservoir will be another star in the constellation of recreational sites in Larimer County. 

Equipment ready for the Xcel Energy construction work on County Road 18E

Xcel Energy Construction Near Chimney Hollow

Xcel Energy is replacing a natural gas line beneath County Road 18 near the Chimney Hollow Reservoir construction site. This is not related to construction of the reservoir.

Aerial view of Windy Gap Reservoir.

Windy Gap Pumping Wraps Up for 2022 Water Year

In 2022, the Windy Gap Project has yielded about 40,000 acre-feet of water that is now being stored in Lake Granby.

Crane at Chimney Hollow.

Equipment Spotlight: Crane

The largest crane on-site at Chimney Hollow Reservoir is a 300-ton crane set up with a 240-foot main boom and 80-foot jib.

Ongoing Mercury Monitoring Collaboration a Key Element of Environmental Commitments

These various monitoring commitments led to approval of the Windy Gap Firming Project and its construction of Chimney Hollow Reservoir.