Project Specific Plans
Denver Water has worked with stakeholders to develop, review and finalize various project related plans. Links to these final approved plans are found below. As additional plans receive final approval, they will be added to the list.
Federal Preemption Lawsuit
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.
- Complaint - July 14, 2021
- DiMascio Declaration
- Exhibit A: FERC Order
- Exhibit B: Boulder County Comments 2008
- Exhibit C: Boulder County Comments 2010
- Exhibit D: Boulder County Motion to Intervene
- Exhibit E: Boulder County Comments Dec 2020
- Exhibit F.1: DW Cover Letter Feb 2021
- Exhibit F.2: DW Response to Comments Table Feb 2021
- Exhibit F.3: DW BC Traffic Meeting Notes Jan 2021
- Exhibit F.4: DW BC Facilities Meeting Notes Feb 2021
- Exhibit F.5: DW BC Open Space Meeting Notes Feb 2021
- Exhibit F.6: DW BC Floodplain Meeting Notes Feb 2021
- Exhibit F.7: DW BC Tree Removal Meeting Notes Feb 2021
- Exhibit F.8: Construction and FERC Plan Schedules Feb 2021
- Exhibit G: Boulder County Comments April 2021
- Exhibit H: DW Response Cover Letter April 2021
- Exhibit I: Boulder County Comments June 2021
- Exhibit J: DW Response Cover Letter June 2021
- Exhibit K: Dale Case Decision Letter June 2021
Federal NEPA Lawsuit
In late 2018, groups opposing the Gross Reservoir Expansion Project filed suit against the U.S. Army Corps of Engineers and the U.S. Fish & Wildlife Service in opposition to the 404 Permit and Record of Decision that Denver Water received in July 2017. Denver Water intervened as a respondent and is defending the permit alongside the federal respondents. Below are the primary court filings in order of submittal.
- Petition for Review of Agency Action - Dec. 19, 2018
- Denver Water's Unopposed MOTION to Intervene and to Extend Time to Answer Petition - Feb. 7, 2019
- DECLARATION of James Lochhead - Feb. 7, 2019
- ORDER granting Denver water motion to intervene - Feb. 8, 2019
- Supplemental Petition for Review of Agency Action - Aug. 13, 2020
- Denver Water's Memo in Support of Motion To Dismiss - Aug. 17, 2020
- Federal Defendants Memo in Support of Motion To Dismiss - Aug. 17, 2020
- Petitioners' Response to Motion To Dismiss - Sept. 25, 2020
- Denver Water's Reply in Support of Motion To Dismiss - Oct. 23, 2020
- Federal Defendants Reply on Motion To Dismiss - Oct. 23, 2020
- Petitioners' Motion for Surreply - Oct. 30, 2020
- Denver Water's Opposition to Surreply - Nov. 4, 2020
- Order Denying Surreply Redacted - Nov. 9, 2020
- Dismissal Order - March 31, 2021
Federal Energy Regulatory Commission Order
In July 2020 the Federal Energy Regulatory Commission issued an order to proceed with design and construction to expand Gross Reservoir in Boulder County. The order can be found below.
Final Federal Energy Regulatory Commission Hydropower License Amendment Application
February 2019: FERC published the Final Supplemental Environmental Assessment, including the Finding of No Significant Impact.
May 2017: We responded to public comments received by FERC during their 60-day comment period. Those responses can be found here.
April 2017: We provided FERC with details about our consultation with the U.S. Forest Service regarding changes to our Recreational Management Plan.
March 2017: We responded to FERC's February 2017 request for more information with this letter.
November 2016: Denver Water filed our final license amendment application with the FERC. Multiple Documents and Volumes available here:
U.S. Forest Service Agreement
In September 2016, Denver Water and the U.S. Forest Service reached a Settlement Agreement to address past, current and future impacts Denver Water operations have on USFS resources. The three-part agreement identifies funding and projects to protect and preserve USFS resources, and includes:
- Settlement Agreement – the overall master agreement describing the negotiations and resolution of issues.
- Appendix 1 – 4(e) Conditions related to operation and maintenance of the Gross Expansion Project – these conditions will be part of the amended Federal Energy Regulatory Commission (FERC) license.
- Appendix 2 – Off-license Agreement – commitments by Denver Water and USFS related to Denver Water’s past, existing and future operations on USFS lands.
U.S. Army Corps of Engineers 404 Permit and Record of Decision
In July 2017 the U.S. Army Corps of Engineers approved the Gross Reservoir Expansion Project by granting Denver Water its' 404 permit and Record of Decision. The 404 permit and Record of Decision can be found below.
Clean Water Act, Section 401 Water Quality Certification
June 2016: The Colorado Department of Public Health and Environment issued the Section 401 Water Quality Certification for the Gross Reservoir Expansion Project that certifies — with the approved mitigation and enhancement measures — the project will create a "Net Environmental Benefit" on both the West and East slopes. This certification includes the following documents:
Endangered Species Act, Section 7 Consultation
December 2013: U.S. Fish and Wildlife issued its Biological Opinion on impacts of depletions of Denver Water's entire system (not just the Gross Reservoir Expansion Project).
National Historic Preservation Act, Section 106 Consultation
October 2015: Denver Water and the State Historic Preservation Officer reached a Programmatic Agreement following a consultation process to meet obligations set forth in the National Historic Preservation Act. Following what is known as a Section 106 Consultation, this agreement fosters cooperation between Denver Water, and state and federal agencies to identify and document historic features and sets a procedural framework to follow in the event historic features are discovered.
2015 Availability Sessions
2008 Public Meetings
Construction Traffic Documents
- Noise Vibration Analysis
- Map - Gross Reservoir Sound Vibration Monitors
- Map - Proposed Gross Reservoir Haul Route
During construction, the volume of construction traffic will vary day-to-day and month-to-month, depending on the type and number of construction activities taking place.
There may be delays caused by slow-moving construction vehicles on Gross Dam Road and Colorado 72. Other roads, such as Colorado 93, Colorado 128, U.S. 287, Arapahoe Road (U.S. 287 bypass to County Line Road) and County Line Road may be affected depending on the location of the construction materials needed to be transported to the site.
Denver Water is looking into alternatives for reducing construction traffic delays, including constructing and/or improving turnouts on Colorado 72 for slow-moving traffic.
To assure we fully understand the potential impacts, on Aug. 8, 2013, Denver Water conducted a test by using loaded trucks to gauge noise and safety issues using third-party experts who have conducted many similar studies.
Draft FERC Hydropower License Amendment Application
Denver Water operates a hydroelectric power plant at Gross Reservoir under a Federal Energy Regulatory Commission (FERC) hydropower license. To expand the reservoir, Denver Water needs to amend its existing hydropower license. Denver Water is required to provide information on the proposed changes at Gross Reservoir to stakeholders (e.g., relocation of recreation facilities, changes in hydropower generation, etc.), before submitting a final application to the FERC.
Please note that the draft application is a large document and it may take a long time to download.
Copies of the draft FERC hydropower license amendment application are also available for public review at:
- Denver Water Administrative Building, 1600 West 12th Ave., Denver, 80204
- Local libraries:
- Grand County:
- Denver County:
- Central Library, 10 W. Fourteenth Ave. Parkway, Denver, 80204
- Boulder County:
- Main Library, 1001 Arapahoe Ave., Boulder, Colo. 80302
- Jefferson County:
- Summit County:
- Denver Water will provide an electronic copy on CD of the draft FERC hydropower license amendment application, if requested.
Environmental Impact Statement
Click here to visit the Moffat EIS Page on the U.S. Army Corps of Engineers' website.
FERC Amendment - Initial Consultation Document
Letters to Gross Reservoir Neighbors