Lower Lake Stone Jail now defunct, and has been designated California Historical Landmark #429. Lower Lake Stone Jail Lower Lake Stone Jail, in Lower Lake, California, is a one-room jail claimed to be the smallest jail in the United States, was erected in 1876 of stone locally quarried and reinforced with iron. During the days of the first quicksilver operations of the Sulphur Bank Mine, lasting from 1873 to 1883, rapid town growth and the urgent need for civil order necessitated the building of a jail. Stephen Nicolai, one of the first stonemasons in Lower Lake, built the jail from local materials with the
Lower Lake, California in 1870 the feud was settled and Lakeport controlled the seat. Although some believe the seat was stolen from Lower Lake, it has remained in Lakeport for over a century and no longer a topic of concern for locals. At the 2000 census, according to the United States Census Bureau, the CDP had a total area of , of which was land and (0.88%) was water. Lower Lake was founded by E. Mitchell in 1858 as Grantville. He built the first house there. The settlement's first post office was opened in 1858. The population was 1,294 at the 2010 census,