The Lassen-Modoc Unit is located in the northeastern most part of the State, consisting of Lassen, Modoc, and portions of Plumas, Shasta, and Siskiyou counties.  There are a total of 1.6 million acres within the Direct Protection Area of the Unit with an average elevation of 5000'.  

Vegetation ranges from ponderosa pines, lodgepole pines, and mixed firs along the west side of the Unit, to sage brush, oaks, and annual grasses mixed with juniper in the desert to the east.

Logging, correctional institutions, and recreation are the major economic contributors to the region.  Recreation, although seasonal, flourishes during the spring and summer months.

The Lassen-Modoc Unit has eight State funded forest fire stations, including one helitack base, five lookouts, three conservation camps, the Susanville Training Center and the Susanville Interagency Fire Center.  CAL FIRE works with volunteer fire departments to provide structure fire protection within the Unit, with paid departments in Susanville City and Herlong.  During the non fire season period, CAL FIRE provides fire protection in the communities of Westwood, Standish-Litchfield, Stones-Bengard, Janesville, and Big Valley through "Amador" contracts.

The Lassen-Modoc Unit works closely with other agencies including the Bureau of Land Management, Lassen National Forest, Modoc National Forest, Plumas National Forest, State Department of Fish and Game, Transportation, California Highway Patrol, and county and city agencies.