Securing our future ability to provide safe, reliable water
The Gross Reservoir Expansion Project is a major component of Denver Water’s long-term, multi-pronged approach to deliver safe, reliable water to the more than 1.4 million residents in our service area today and many of the projected millions who will call Colorado home in the decades to come.
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What it would add
77,000
acre-feet of water storage
131
feet of dam height
17
miles of enhanced flows in South Boulder Creek
3
miles of shoreline
The project will raise the height of the existing dam by 131 feet, which will allow the capacity of the reservoir to increase. Once permits are secured, we expect construction to take place in phases. The project website details expansion plans, permitting, construction and timing.