Lower Sonoran Field Office

Phoenix District/Hassayampa/Lower Sonoran office building

The BLM Lower Sonoran Office manages 1.4 million acres of public land in south-central Arizona, including the half-million acre Sonoran Desert National Monument, located 60 miles southwest of Phoenix. The monument contains biologically diverse national communities, including large Saguaro cactus forests and contains many significant archaeological and historic sites. In an effort to rehabilitate damage from off-highway vehicles, access to about 20 percent of the monument has been temporarily closed to motorized use.

Public lands within this field office are near developed and expanding communities and are heavily used. The lands are managed for multiple use and provide diverse recreational opportunities, mining, wildlife habitat, grazing, and wilderness, all overlaying a rich cultural past. The field office oversees six wilderness areas, four Areas of Critical Environmental Concern, the Juan Bautista de Anza National Historic Trail and one property listed on the National Register of Historic Places.

The BLM Lower Sonoran Field Office is a part of the BLM Phoenix District.


Ed Kender

Field Manager

Katie White Bull

Sonoran Desert National Monument Manager


Mailing Address:
21605 N. 7th Ave.
Phoenix, AZ 85027-2929
Phone: 623-580-5500
Fax: 623-580-5580
TTY/Federal Relay System: 800-877-8339
8 a.m.–4:30 p.m., Monday–Friday

COVID-19 Updates

COVID-19 Updates

BLM Arizona public rooms are open for in-person visits, up to 25% capacity. You must wear a mask inside federal buildings, including public rooms. People who are unvaccinated must also physically distance consistent with CDC guidance. 

You can also continue to do business by phone or email. If you hope to meet with a specific BLM staff member, we recommend calling or emailing before visiting the office. 

Fire Restrictions

View all Arizona Fire Restrictions

Using exploding targets, fireworks, tracer ammunition, paper/sky lanterns, and other incendiary devices is prohibited year-round on all BLM-managed public land in Arizona.