- Use your own words. Say where you live and what you have seen there: a species, a spring, a place animals cross, the season you see them.
- Ask conservation groups to watch for SDG&E's application. The first deadlines to take part follow the filing. What happens when it does.
- Ask the agencies how to raise a species or habitat you know of in the environmental review.
- Ask researchers what they have published about the area. They answer questions about their work; do not ask them to take a side.
- Point them to the record: the Warner Springs study and what SDG&E says its review will cover.
Groups that defend this habitat and can take part in the CPUC's review. Tell them what you know about the land near you, and ask them to watch for SDG&E's filing.
Anza-Borrego Desert State Park
Anza-Borrego Foundation
Protects the park's landscapes, wildlife habitat and cultural heritage.
On these routes: Leads the conservation case against a route through the park, with an advocacy toolkit.
Source: Anza-Borrego Foundation
San Diego County
Sierra Club, San Diego Chapter
The Sierra Club's chapter for San Diego.
On these routes: Took part in the CPUC's Sunrise Powerlink case, with the Center for Biological Diversity.
Riverside and San Bernardino counties
Sierra Club, San Gorgonio Chapter
The Sierra Club's chapter for Riverside and San Bernardino counties.
On these routes: Its Santa Margarita Group covers the Murrieta and Temecula areas, the Riverside County end of the line.
National
Center for Biological Diversity
Works through science, law and media to protect species at risk of extinction.
On these routes: Took part in the CPUC's Sunrise Powerlink case, with the Sierra Club's San Diego chapter.
San Diego County
San Diego Bird Alliance
San Diego's Audubon chapter, renamed from the San Diego Audubon Society. It defends the region's birds and habitats.
On these routes: The bird conservation group for the San Diego County length of every route.
Northwest San Diego and southwest Riverside counties
Palomar Audubon Society
The Audubon chapter for northwest San Diego County and southwest Riverside County.
On these routes: Its area takes in the North County alternatives and the Temecula end of the line.
California
Audubon California
The National Audubon Society's California program.
On these routes: Runs a bird program at the Salton Sea and in the Imperial Valley, where the line would begin.
San Diego and Imperial counties
California Native Plant Society, San Diego Chapter
Works to conserve native plants and their habitats in San Diego and Imperial counties.
On these routes: Covers the desert and mountain plant communities the routes cross. Its site lists its committees; there is no contact page.
Southern California
Endangered Habitats League
Southern California group for habitat protection and careful land use.
On these routes: Has programs in San Diego and Riverside counties, the two the line crosses. The number below is its San Diego line.
The public agencies for wildlife and habitat in the counties the line crosses. Tell them what lives near you and ask how to raise it in the environmental review.
San Diego, Orange, Los Angeles, Ventura and Santa Barbara counties
California Department of Fish and Wildlife, South Coast Region
The state wildlife agency's office for the South Coast, Region 5.
On these routes: The state's wildlife office for the San Diego County length of the line and its alternatives.
Imperial, Riverside, San Bernardino, Inyo and Mono counties
California Department of Fish and Wildlife, Inland Deserts Region
The state wildlife agency's office for the inland deserts, Region 6.
On these routes: Covers both ends of the line, Imperial County and Riverside County, and lists Peninsular bighorn sheep among its work.
Southern California, including San Diego, Riverside and Imperial counties
U.S. Fish and Wildlife Service, Carlsbad Fish and Wildlife Office
The federal wildlife agency's office for this part of California, which now also carries the Palm Springs office's work.
On these routes: Its area takes in all three counties the line crosses.
Western Riverside County
Western Riverside County Regional Conservation Authority
Carries out the Western Riverside County Multiple Species Habitat Conservation Plan.
On these routes: The regional habitat plan for the Riverside County end of the line.
Southwest Riverside County
Temecula-Elsinore-Anza-Murrieta Resource Conservation District
The resource conservation district for Temecula, Murrieta, Lake Elsinore and Anza.
On these routes: It is working on a wildlife overcrossing on Interstate 15 south of Temecula.
Researchers who study the ground the routes cross. Scientists answer questions about their work and do not take sides, so ask what they have published, not for their support.
San Diego
U.S. Geological Survey, San Diego Field Station
Federal research station studying golden eagles, endangered amphibians and reptiles, and more.
On these routes: USGS scientists wrote, with SDSU, the 2008 study that found Warner Springs to be a hotspot of genetic divergence.
San Diego
San Diego State University, Department of Biology
SDSU's biology department.
On these routes: The 2008 study's SDSU co-author runs a population genetics lab here.
Borrego Springs
Steele/Burnand Anza-Borrego Desert Research Center
A University of California field station beside Anza-Borrego Desert State Park, run by UC Irvine.
On these routes: A base for university research in the park the line would cross.
Palm Desert
Bighorn Institute
Researches wild sheep and is an official recovery facility for the endangered Peninsular bighorn.
On these routes: Anza-Borrego Desert State Park, which the line would cross, is critical habitat for the Peninsular bighorn.
Source: Anza-Borrego Foundation
San Diego
San Diego Natural History Museum
Does field research on the region's plants and animals and keeps the collections that record them.
On these routes: Its collections document what lives in the backcountry the routes cross.
Missing someone?
Every contact here is one the organization publishes itself, checked on November 11, 2026. None of them has endorsed this hub, and only the Anza-Borrego Foundation has spoken about the line. Know a group, a program or a study that belongs here, or a contact that has changed?
Tell us