Gross Reservoir Expansion Project

It takes a long time to build a dam 471 feet high. A lot of other preparatory work is required such as quarrying and preparing the existing dam and foundation for the new dam.

The first planned work supporting the project consists of geotechnical drilling (summer 2018) and exploratory work in the Osprey Point Quarry starting after the reservoir is closed to boating for the season in October 2018. Next up, starting as early as 2019, is site development work and road improvements to the roads accessing Gross Dam. Principally, Denver Water is evaluating improvements and/or traffic control options for the intersection at SH72 and Gross Dam Road, and to Gross Dam Road itself.

Denver Water is committed to working closely with residents to ensure safety and open communication throughout construction.

Latest News / Blog

Expanding Gross Reservoir

Rocky Mountain Water - Jan. 2019 - "As part of its commitment to developing projects in the right way, Denver Water will fund and participate in dozens of environmental projects across multiple watersheds at a cost of more than $20 million." Read the full story here.

Meeting the water crisis

Colorado Green - Jan./Feb. 2019 - "With 100 years of history under its belt, Denver Water has seen plenty of good years and bad in terms of snowpack and water supplies. Gross Reservoir to help quench thirst of drought and benefit environment." Read the full story...

A statement from the CEO/Manager

Below is a statement from Denver Water CEO/Manager, Jim Lochhead, regarding the complaint: “When you’re responsible for delivering safe, clean drinking water to a quarter of the state’s population, failing is not an option. In the last 15 years, we’ve come close to...