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Gross Reservoir Expansion Project

Sector: Hydro • Location: Boulder, Colorado, United States

Source: Coyote Gulch

Project
Under Construction

A project to raise the Gross Reservoir dam in Boulder County by 131 feet, nearly tripling its capacity to 119,000 acre-feet to ensure future water security for Denver Water's service area. The project includes construction of 118 new steps on the dam and involves a hydroelectric plant at the dam base.

Status
Under Construction
Sector
Hydro, Water Supply and Storage, Government
Location
Boulder, Colorado, United States of America
Updated
22 Jul 2026
Source
Coyote Gulch

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Project Information

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The project “Gross Reservoir Expansion Project” is an infrastructure initiative in the Hydro sector, located in Boulder, Colorado, United States. Taiyo aggregates data on it from Coyote Gulch.

Participants

Sponsoring Agency

Status

Original status

Under Construction

Taiyo status

Under Construction

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

A project to raise the Gross Reservoir dam in Boulder County by 131 feet, nearly tripling its capacity to 119,000 acre-feet to ensure future water security for Denver Water's service area. The project includes construction of 118 new steps on the dam and involves a hydroelectric plant at the dam base.

Original sector

Water Infrastructure

Budget

Location

Country

United States of America (USA)

State

Colorado

City

Boulder

Source

Source

Coyote Gulch

URL

More Details

Record type

Project

Sector

Hydro, Water Supply and Storage, Government

Article published date

2025-06-08

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