Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Gross Reservoir Final federal approval secured for Gross Reservoir Expansion Project On July 17, 2020, the Federal Energy Regulatory Commission ordered Denver Water to proceed with design and construction to expand the reservoir. “The Gross Reservoir Expansion Project builds on our deep experience in supporting utilities as they execute significant, long-term projects.” The project will raise the height of the existing 340-foot dam by 131 feet, increasing reservoir capacity … Of the increased storage capacity, 5,000 acre-feet will be directed to the South Boulder Creek, which is managed by the cities of Boulder and Lafayette. Denver Water is planning a major expansion of the reservoir that will increase height of the Gross Reservoir Dam by 131 feet and water storage by 77,000 acre-feet. Design Value. The project relies on the expansion of an existing footprint — without the placement of a new dam, reservoir or diversion structure; it also benefits from an original design that anticipated eventual expansion. Gross Reservoir Dam Expansion Proposal. “When the project is complete, Gross Reservoir will be able to hold 119,000-acre-feet, second only to Dillon Reservoir in Summit County, which is capable of holding just north of 257,000-acre-feet, according to “On Tap.” “Expanding Gross Reservoir is a major part of Denver Water’s long-term, multipronged approach to deliver safe, reliable water. State of Colorado certification moves Gross Reservoir Expansion Project closer to reality, and cooperation is the key. When complete, the reservoir will be capable of holding about 119,000 acre-feet of water to provide greater system balance and resiliency. $464M. When the dam is in place, the water level will be about one-third up of this hill from the current level. Provided the remaining federal approvals come by the end of this year, the project is slated to be complete in 2025. Local residents and environmental groups are fighting against the expansion due to concerns about environmental impacts and the lack … Gross Reservoir Expansion (Gross Dam Raise) We worked with Denver Water to expand the reservoir at Gross Dam by raising the existing 340-foot-high concrete structure. If … Denver Water attained final federal approval for their Gross Reservoir Expansion Project in mid-July. The $464 million (in 2025 dollars) expansion involves raising Gross Dam by 131 feet to nearly triple the size of the reservoir behind it. Denver Water is proposing to expand Gross Reservoir in Boulder County by raising the height of the existing dam. “This is a major milestone that comes after nearly 17 years of careful study, public involvement, planning, and state and federal permitting,” said Jim Lochhead, CEO/Manager of Denver Water. View Denver Water’s letter requesting the time extension. In 2017, a fter 14 years of environmental study and analysis, Denver Water received the 404 Permit and Record of Decision from the Corps. The project will raise the height of the existing 340-foot-dam by 131 feet, increasing reservoir capacity from 42,000 acre feet of … The proposed expansion of Gross Reservoir has provoked waves of protest from Boulder County residents, and the county has asserted what it claims is its right to review the project. Denver Water attained final federal approval for their Gross Reservoir Expansion Project in mid-July. When complete, the reservoir will be capable of holding about 119,000 acre-feet … The Gross Reservoir Expansion Project will raise the height of the existing dam, completed in 1954, by 131 feet, allowing the reservoir to nearly triple in size. Completed in 1954, the reservoir has a surface area of 440 acres, and the spillway sits at 7,225 feet elevation. South Boulder Creek flows out of the 340 foot-high dam. The Federal Energy Regulatory Commission ordered Denver Water to proceed with design and construction to expand Gross Reservoir in Boulder County, which involves raising the dam an additional 131 feet. Expansion Project brings a comprehensive 17-year federal and state permitting process The expansion of the reservoir will raise the facility’s dam 131 feet and will increase the capacity of the reservoir by 77,000 acre-feet. “The Gross Reservoir Expansion Project is a vital component of developing a more secure, reliable drinking water supply for a quarter of the state’s population,” he added. The Gross Reservoir Expansion Project would, among other things, increase the reservoir’s current capacity by 77,000 acre-feet of water. The expansion of Gross Reservoir will supply an additional 77,000 acre-feet (approximately 25 billion gallons) of water storage. This is accomplished by raising the existing dam by 131 feet. The Gross Reservoir Expansion Project will raise the height of the existing dam, completed in 1954, by 131 feet, allowing the reservoir to nearly triple in size. The Gross Reservoir Expansion Project will add 77,000 total acre feet — 72,000 for Denver Water use and 5,000 for an environmental pool that provides additional water for South Boulder Creek during low-flow periods — nearly tripling reservoir capacity. For the latest information on the Gross Reservoir Expansion Project visit https://grossreservoir.org/. When complete, the reservoir will be capable of holding about 119,000 acre-feet of water to provide greater balance and resiliency to Denver Water’s system. Known as a 1041 process, the move is contested by Denver Water. “Expanding Gross Reservoir is a critical project to ensure a secure water supply for nearly a quarter of the state’s population. The Gross Reservoir expansion is awaiting a final federal government approval from the Federal Energy Regulatory Commission. Ellen Malan, of Denver, relaxes at Gross Reservoir outside Boulder on July 1, 2019. The project … Denver Water officials, CEO Jim Lochhead and project manager Jeff Martin gave a tour of Gross Reservoir and talked about the Expansion Project on September 14th, 2017. The Gross Reservoir Expansion Project will raise the height of the existing dam, completed in 1954, by 131 feet, allowing the reservoir to nearly triple in size. The reservoir receives water from the western side of the Continental Divide through the Moffat Tunnel. The Federal Energy Regulatory Commission ordered Denver Water to proceed with design and construction to expand Gross Reservoir in Boulder County, which involves raising the dam an additional 131 feet. The dam will be raised with what is called a downstream buttress raise, where the new concrete will be placed on the downstream face of the dam from the bottom up. Gross Reservoir, located in Boulder County, Colorado, is owned and operated by Denver Water. Expanding Gross Reservoir will help protect Denver Water customers from negative impacts of a future drought and shortfalls in the overall water storage system, according to the Denver Water website. The Community Planning & Permitting Director has granted Denver Water’s request to extend the deadline to provide responses to issues and questions raised by agencies and individuals to 4:30 p.m. on February 19, 2021. Denver Water began the permitting process for t he Gross Reservoir Expansion Project in 2003 with the U.S. Army Corps of Engineers. $13M. The proposed expansion of Gross Reservoir has provoked waves of protest from Boulder County residents, and the county has asserted what it claims is its right to review the project. “The Gross Reservoir Expansion Project builds on our deep experience in supporting utilities as they execute significant, long-term projects." Gross Reservoir Expansion Project.

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