1120 Lincoln St., Suite 1600, Denver, CO, 80203-2141
Contact Us: 303.861.1963
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Anne E. Sibree, Of Counsel

Phone: 303.861.1963

Email: [email protected]

Practice areas

Environment and Natural Resources, with an emphasis on NEPA, ESA, CWA, Federal Power Act, National Historic Preservation Act, Wild and Scenic Rivers Act, and Federal Land Policy and Management Act

Assists clients with federal, state and local environmental and natural resource matters, including:

  • Infrastructure development and permitting
  • Hydropower licensing and compliance
  • Endangered Species Act consultations and development of Habitat Conservation Plans
  • Mitigation plan development
  • Settlement agreements and contracts
  • Federal land use authorizations
  • Water quality permitting and compliance
  • National Historic Preservation Act compliance
  • Local land use regulations
  • Multi-party cooperative agreements


  • Hydro Review: The Revitalization of Hydropower (10/16/19)
    • This article provides a comprehensive review of the laws and federal actions that encouraged hydropower development, beginning in the 1920s. Recent legislation and executive actions beginning in 2013 make it evident there is a similar, if not more aggressive, movement to once again revitalize the hydropower industry. Where the goal of government to diversify and increase energy sources at a national level remains the same, public interest has shifted from the initial hydropower era’s potential for economic improvement to this hydropower era’s transitioning of the nation’s energy to clean, renewable sources.  The Revitalization of Hydropower - Hydro Review
  • The Power in Water Infrastructure (American Water Works Association, February 2020, Vol. 112, No. 2)
    • Key Takeaways:
      • Municipalities, water districts, and the agricultural industry can use new streamlined hydropower authorizations and exemptions to offset business costs by producing hydroelectric energy.
      • Small hydropower opportunities include experimental and hydrokinetic projects, conduit projects, and projects relying on manmade dams or natural impoundments.
      • Hydropower is a clean energy that provides benefits at multiple levels, adding resilience to the energy grid with a lower carbon footprint. The Power In Water Infrastructure Generating Hydropower at Federal Facilities
  • Generating Hydropower at Federal Facilities (Journal of American Water Works Association, March 2020, VOl. 112, No. 3)

Bar admissions

  • Colorado


  • J.D., University of Denver, 1999
    • Natural Resources Law Society, Land Use Law Society, Earthlaw (now Earth Justice) Legal Clinic.
  • B.A., University of Colorado

Legal Experience

Trout Raley, Colorado

Denver Water, March 2000 – February 2019

  • Office of General Counsel. Lead Natural Resources/Environmental/ Hydropower Lawyer.  Lead attorney in the Office of the General Counsel for Denver Water, on all natural resources, environmental, hydropower and energy legal matters associated with maintaining, operating, and expanding the water supply and delivery systems for Colorado’s oldest and largest water utility serving 1.4 million people.

Western Resource Advocates, January 2000 – March 2000.

  • Legal Pro Bono Coordinator. Reorganized pro bono program for non-profit environmental legal organization.  Established new communication protocols, contacts and program organization.  Position duties included citizen/citizen group interviews to evaluate potential environmental claims, outreach and matching with attorneys interested in pro bono work.

Johns Manville Corp, September 1999 – December 1999.

  • Contract Attorney. Assisted environmental in-house counsel on cases involving Clean Air Act and CERCLA claims.  Drafted memos, research.


  • Member, Colorado Bar Association

Additional courses

  • 40 Hour Mediation Training, Colorado Bar Association, August 2011. Developed by the Colorado Bar Association ADR Section, the program has been designed to meet the 40-hour training standards approved by the Colorado Bar Association and the Mediation Association of Colorado.

Relevant Professional Activities

  • Presentation: National Hydropower Association, Annual Conference, April 2017.  Presented “Converting Licenses to Small Hydropower Project Exemptions” on a panel for “Alternatives to Relicensing.”

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