High Desert State Prison (HDSP) is a maximum security state prison that houses level IV inmates located in Susanville, Lassen County, California. Opened in 1995, it has a capacity of 2,324 persons; in December 2012 it held 3,442 inmates. Also located in Susanville is the state California Correctional Center, a minimum-security prison. A third prison facility, the Federal Correctional Institution, Herlong, is also located within Lassen County, California.
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