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Chimney Hollow Reservoir

The Chimney Hollow Reservoir dam will be the tallest dam built in Colorado in 50 years and incorporates asphalt core technology

  • Southwest of Loveland, Colorado

    Southwest of Loveland, Colorado

The new 90,000 acre-foot water storage reservoir will be retained by a 360 foot tall rockfill dam

This Chimney Hollow Reservoir Project is needed to firm water supply for 400,000 residents in northern Colorado, through partnership with 12 public agencies.

We are providing complete engineering and design of the Chimney Hollow Reservoir Project. The project consists of an approximately 360-ft tall hydraulic asphalt core rockfill main dam, 40-foot-high zoned rockfill saddle dam, inlet/outlet works in a tunnel in the right abutment, and uncontrolled concrete spillway. It also requires large diameter conveyance piping and valve house to tie into the US Bureau of Reclamation’s Colorado-Big Thompson Project, as well as access roads.

Our scope of work includes geotechnical investigations, evaluation of alternatives, complete engineering analyses, preparation of intermediate and final designs, preparation of bid documents, support during bidding, and engineering services during construction.  The work includes a large test quarry and test fill to evaluate the rockfill properties for final design.

The Northern Colorado Water Conservancy District Subdistrict obtained all required Federal Permits for the project. When complete, the main dam will be one of the largest in Colorado.

At a Glance

Meet Our Team

Christine Weber, US South Central Regional Sector Lead, WaterPower & Dams

I’m immensely pleased when our hard-earned knowledge and experience lead to elegant solutions for complex dam designs and dam safety issues.
Christine Weber US South Central Regional Sector Lead, WaterPower & Dams Read More
  • Christine Weber

    US South Central Regional Sector Lead, WaterPower & Dams

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