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

Final EIS REleaseD

WAPA published the final environmental imapct statement for the Estes-to-Flatiron Transmission Lines Rebuild Project in the ​Federal Register, April 13. The document defines the proposed route for the project, which involves consolidating two existing transmission lines in the area to one, double-circuit power line. The agency preferred alternative mostly follows existing transmission line rights of way to minimize environmental impacts. In addition to thoroughly analzying the agency preferred alterantive, the final EIS also addresses the public comments made to the draft EIS shared in September 2014.  ​

Next steps: WAPA will publish a record of decision on the project no early than 30 days from April 13.  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. 

Project updates


Project documents

Final EIS and appendices

Or download smaller sections of the Final EIS

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: 8/1/2018 10:09 AM