Engineering and consulting firm MWH Global Inc. in Broomfield, a division of Canada-based Stantec Inc., has received an $11.9 million contract to design the Chimney Hollow Reservoir dam that will be located between Loveland and Longmont.
The Municipal Subdistrict of the Northern Colorado Water Conservancy District hired MWH to design a 360-foot-tall dam, spillway and outlet works for the 90,000-acre-foot reservoir near Loveland.
Officials said on Tuesday that the Chimney Hollow Reservoir dam, located on the west side of Carter Lake, will be the largest dam built in Colorado in 50 years. It will provide water storage for growing communities in Northern Colorado, including Broomfield, Longmont, Loveland and Greeley. The subdistrict estimates that its communities could see a water-supply shortage of 64,000 acre feet, or approximately 29 billion gallons, by 2030.
The design for the Chimney Hollow Reservoir Project is expected to be completed in 2018, with construction completed in 2021. The engineering services provided by MWH will include evaluating alternatives, final design and support during bidding.
MWH, acquired by Stantec in May, has nearly 100 years of waterpower and dam experience, including feasibility studies, design and construction management. MWH served as principal designer for San Diego County Water Authority’s Emergency and Carryover Storage Project, delivering water storage to a region that sources drinking water from more than 400 miles away.