WAPA » Transmission » Environmental review-NEPA

Headgate Rock-Blythe No. 1, 161-kV Transmission Line

Structure Replacement and Black Point Mesa Reroute, CA, DOE/EA-1427​

Western owns and operates the Parker-Blythe No. 1 161-kV transmission line between Parker Dam and Blythe Substation in Blythe, Calif.

The transmission line is almost 50-years old and the wood poles are beginning to age and show signs of failure. Western wants to replace H-frame wood poles and five specialized structures with H-frame, light-duty steel structures from Headgate Rock Substation to Blythe Substation. Replacing the structures on the transmission line will require an additional temporary right-of-way of 100 feet around each pole.

Another proposed reroute would move the existing line from a sensitive cultural site in LaPaz County, Ariz., to a new location in San Bernardino and Riverside counties in California.

Project Updates:

  • EA Determination: March 2002
  • Notice of Floodplain Involvement

Contact Information:


NEPA Document Manager
Headgate Rock to Blythe EA
Corporate Services Office, A7400
Western Area Power Administration
P.O. Box 281213
Lakewood, CO 80228-8213
Fax: 720-963-7263 

Page Last Updated: 7/13/2015 9:21 PM