Gross Reservoir Expansion Project

News and Documents

Latest News and Announcements

On July 14, 2021, Denver Water filed a lawsuit in U.S. District Court against Boulder County, asserting the county is overreaching its authority and jeopardizing a federally ordered reservoir expansion critical to a safe and secure water supply for one quarter of the state’s population while risking long-planned benefits for the West Slope environment.

You can read Denver Water statement on this action here. And you can read the complaint here.

What is a 1041 Permit?

Colorado House Bill 1041, also known as the Areas and Activities of State Interest Act, was enacted in 1974 and allows local governments to regulate, through established criteria, a variety of development activities with guidance from the state.

Projects of this scale do not jump right into construction, rather they take many years of planning, study and review.

1041 Permit Documents

Boulder County’s 1041 regulations are listed in Article 8 – Location & Extent Areas & Activities of State Interest (1041)

The public can view the entire 1041 Permit application submitted to the county by clicking here.

Latest News / Blog

Gross expansion is a go after federal, state and local reviews finalized

TAP - November 8, 2021 - Project to raise dam will improve water reliability for more than 1.5 million people while benefiting the environment. After nearly 20 years of preparations, the expansion of Gross Reservoir in Boulder County is moving ahead. Last week, Denver...

Denver Water, Boulder County strike agreement to address construction impacts, improve road safety, and enhance environment, open space and recreation as part of reservoir project

Denver — Wednesday, Nov. 3, 2021 — Denver Water and Boulder County have entered into an agreement related to the Gross Reservoir expansion that marks the final step in a nearly 20-year federal, state and local review to permit the project. Denver Water will commit...