WAPA » Transmission » Environmental review-NEPA

Estes-to-Flatiron Transmission Lines Rebuild Project

​Western Area Power Administration proposes to rebuild approximately 32 miles of double wood-pole structure 115-kilovolt transmission line that exists between Estes Park and Flatiron Reservoir in Larimer County, Colo. The proposal would remove 16 miles of transmission line, and modernize 16 miles to steel-pole double-circuit 115-kV transmission line. The reduction and modernizing of transmission lines will occur on Federal, state and private lands. The public parcels are administered by the Arapaho and Roosevelt National Forest, which is a cooperating agency in the project.

The proposed project would:​

  • Rebuild aging and deteriorating transmission lines
  • Reduce the number of linear miles of transmission corridors and the associated environmental footprint
  • Ensure that the transmission lines comply with applicable codes and requirements
  • Reduce potential for disruption of customer service due to wildfire hazards
  • Improve access for maintenance and emergencies

ROUTE Selected: Agency Preferred Alternative  Announced

WAPA announced the selection of an agency preferred alternative, in December 2016, that is a composite of alternative selections presented in the Draft EIS. WAPA selected the Agency Preferred Alternative (image) after reviewing all the material developed during the Draft EIS process, including the project purpose and need, impacts on key issues and other resources, and agency and public comments.

Next steps: (updated August 2017) WAPA anticipates releasing the Final EIS in fall 2017. The Final EIS will provide an updated analysis of the alternatives and a description of the selected route. The Final EIS will also include responses to all substantive public comments received on the Draft EIS. No earlier than 30 days after the Final EIS is published, WAPA will issue a Record of Decision, or ROD. The U.S. Forest Service, as the project’s cooperating agency, will use the information in the Final EIS to prepare and issue a Draft ROD for public comment. After the 45-day objection and resolution period, the Forest Service will publish its Final ROD. The U.S. Forest Service ROD could authorize the project where it crosses National Forest System lands.

Project updates





Project documents

Selected route - Agency Preferred Alternative

Draft EIS and appendices


Draft EIS drop-in learning session materials


Scoping materials and reports



Mark Wieringa
Natural Resources | Western Area Power Administration
12155 W Alameda Pkwy
PO Box 281213
Lakewood, CO 80228

Page Last Updated: 8/29/2017 10:07 AM