Tehama County was organized in 1856 from parts of Colusa, Butte, and Shasta counties. “Tehama” is believed to be an Indian word, but authorities disagree on the meaning, which has variously been interpreted as “high water,” “low land,” “salmon,” or “shallow.” Peter Lassen had owned the Rancho Bosquejo, located at the end of the Lassen Trail across the Sierra Nevada, until he sold it in 1850. Stage lines began operating in this area in 1851. The Sacramento River cuts through the central portion of the county, making Tehama a central point of widespread recreational areas which provide hiking, camping, scenic tours, golfing, boating, hunting and fishing. National protected areas include parts of Lassen National Forest, Lassen Volcanic National Park, and the Sacramento River National Wildlife Refuge. Corning, home to the Bell Carter Olive Company and Lucero Olive Oil, has a significant agricultural industry centered on olives, as well as the Sunsweet label’s dried plums. Rolling Hills Casino in Corning is a popular destination for both locals and I-5 travelers. Tehama (city) mapped out in 1850, was one of the earliest California settlements north of Sacramento. It was the last stop for the riverboats for a few years, and the town initially thrived on the riverboat traffic. When the boats started going farther up the river, Red Bluff became the center of trade. As of the 2010 census, the population was 63,463. The county seat and largest city is Red Bluff, where the annual Red Bluff Round-Up, first held in 1921, has become one of the west’s largest rodeos.