News

Construction of the valve house at Chimney Hollow Reservoir shows the structure going vertical

Valve House Takes Shape as Exterior Steel is Placed

As the valve house begins to take shape, crews are wrapping up all valve installations inside.

Summer 2024 Virtual Tour

Site experts give us an inside look at key components of project construction, including the labs, spillway, main dam, saddle dam and future Larimer County Chimney Hollow Open Space.

Chimney Hollow Reservoir Project, NISP Receive State Conservation Board Financing

New legislation to provide state financing help for two Northern Colorado water projects has been signed into law by Gov. Jared Polis.

Future Larimer County Chimney Hollow Open Space

Chimney Hollow Open Space is 1,847 total acres and is located just west of Chimney Hollow Reservoir, which is 760 surface acres (by comparison, nearby Carter Lake is 1,100 surface acres).

Crews placing asphalt on main dam as excavator dumps asphalt.

Crews Fill in Hole on Left Abutment of the Main Dam

A natural rise in the rocks more than 200 feet from the valley floor separated a small trough from the main valley, meaning crews would have to fill it with its own asphalt core and fill material.

Board of Directors Spotlight: Bill Emslie and Dick Wolfe

The Municipal Subdistrict Board President Bill Emslie and Vice President Dick Wolfe have a unique involvement in the Chimney Hollow Reservoir Project given their roles and experience.

Bailey Sleeve Valves

Final Valve Testing Expected to be Completed this Month

By the end of June, the remaining valves for the Chimney Hollow Reservoir Project are expected to be tested and upon approval, will be shipped to the site from Germany.

Chimney Hollow Tunnel Grouting

Tunnel Grouting Helps Reinforce Main Dam’s Water-Tight Barrier

Project managers and construction crews continue sparing no detail in making sure the water in Chimney Hollow Reservoir, once built, stays in all the right places.

Jeff Drager at Chimney Hollow

Employee Spotlight: Jeff Drager

Northern Water’s Director of Engineering Jeff Drager has been a long-time face to the Chimney Hollow Reservoir Project, having served as the Project Manager since the project’s conception in 1995.