Gross Reservoir Expansion Project

Gross Reservoir
Expansion Project

Project Overview

Gross Reservoir was named for Denver Water former Chief Engineer Dwight D. Gross and was completed in 1954. It serves as a combination storage and regulating facility for water that flows under the Continental Divide through the Moffat Tunnel and supplies water to Denver Water’s North System.

The Gross Reservoir Expansion Project is crucial to providing water dependability to Denver Water customers living on Colorado’s Front Range, protecting against potential catastrophic events such as fires, landslides, floods, drought and infrastructure failures. Gross Reservoir was originally designed with the intention of future expansion to provide necessary storage. With demand expected to increase in the coming years, expanding Gross Reservoir will add a new element of sustainability to Denver Water’s multi-pronged approach that includes conservation, reuse water and developing additional supply, to meet our customers’ future needs.

Governor Endorses Gross Reservoir Expansion Project


Deep Dive: Learning By Doing

March 11, 2017 - Good Morning Grand County Explores Learning By Doing (LBD), the shared vision of river health that is delivering true beneficial change to the Fraser River and its tributaries. Guests include Kirk Klanke and Anna Drexler-Dreis from Trout Unlimited and...

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By Kirk Klanke - March 7, 2017 - For more than 10 years, Trout Unlimited, Grand County and several West Slope interests have been negotiating with the two largest water diverters in Grand County. The Northern Colorado Water Conservancy District and Denver Water divert...

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By Lance Maggart - February 23, 2017 - Environmental improvement and sustainability projects are key factors in creating and maintaining the outdoor recreational opportunities that drive so much of Grand County's commerce. Read more at Sky-Hi...