The Sacramento River Delta Historical Society is a non-profit organization created to preserve the historical heritage of the Sacramento River Delta, to promote a greater public awareness of Sacramento River Delta history, and to educate the public with regard to the importance of the Sacramento River Delta’s history. The Resource Center contains collections of this historical heritage.

The Sacramento River Delta in California extends from Freeport south to Rio Vista and includes all the communities along the Sacramento River.They are Freeport, Clarksburg, Hood, Randall, Courtland, Vorden, Locke, Walnut Grove, Ryde, Isleton and Rio Vista.