Battalion 4 encompasses the southern portion of Tehama County and all of the State Responsibility Areas (SRA) in Glenn County. The Battalion begins at Elder Creek in Tehama County, and runs south to the Glenn-Colusa County line. Communities within the Battalion include Richfield, Corning, Rancho Tehama, Flournoy, Henleyville, Paskenta, Chrome, Grindstone Rancheria, Stonyford, and Elk Creek.
Battalion 4 is responsible for maintenance for all the Self-Contained Breathing Apparatus (SCBA) and the Water Rescue Program for CAL FIRE/Tehama County Fire Department.