Strategic fuel break prevents wildfire spread across U.S.–Mexico border

Together, the fires scorched roughly 2,170 acres of dense chaparral. When the fires reached the treated area, fire intensity dropped and the spread stopped with only three spot fires of a quarter-acre or less - allowing engine crews to suppress the flames effectively.

The fuel break has been periodically maintained over the years, with efforts increasing in the late 2000s. The BLM has been maintaining various portions of the fuel break since 1999. In 2022, the BLM's California Desert District partnered with Cal Fire's San Diego Unit and U.S. Customs and Border Protection to reestablish and maintain a portion of the International Border Fuel Break, with the BLM managing the maintenance. Other project partners included the U.S. Geological Survey, San Diego Gas and Electric, Campo Kumeyaay Nation, private landowners, and others.

"The BLM and Cal Fire have been working with cooperators to maintain this fuel break for decades because we know its value," said BLM Fuels Program Manager James Gannon. "Every mile of treated land represents foresight and commitment to protecting lives, property, and natural resources."

Stretching 38 miles along the U.S.-Mexico border, the fuel break has helped contain multiple wildfires over the years. Beyond fire protection, it supports border operations and reduces fire suppression costs and impacts to natural resources. The fuel break also provides habitat for species like the Quino checkerspot butterfly and Cope's leopard lizard, which thrive in areas of sparse vegetation. This project, supported by the Southern Border Initiative and funded through a mix of federal programs, demonstrates how proactive land management can protect communities and ecosystems from wildfire threats.