The Rocklin area’s earliest recorded history begins when Euro-Americans first contacted the native Nisenan in the late 18th century. The Nisenan lived near area waterways for 1500-3000 years, hunting game and processing food, especially acorns, in the bedrock mortars that we now see on golf courses and along the banks of area streams.


By the mid 1830’s Euro-American diseases had decimated their population. In 1833, 75% died of malaria brought here from Hawaii by Hudson’s Bay Company traders. Later the Argonauts and other mid 19th century fortune hunters drove them from the land and permanently disrupted their culture. Descendents of the Nisenan still reside in South Placer County but the traditional life ways have not been seen in Rocklin since 1904.

*Gary Day