1806-1808: Spanish army lieutenant Gabriel Moraga led the Spanish army through the Sacramento and San Joaquin Valleys, becoming the first European to see the Sutter Buttes and displacing native people everywhere he went.
1847: The Donner Party arrived in the Yuba-Sutter area after its misadventures on the Overland Emigrant Trail. 1849: The Gold Rush brought a flood of gold miners to the area, establishing new towns and destroying ecosystems. Mine tailings fell into the rivers, raising the beds of the Yuba River and Feather River and consequently increasing flood risks to this day. 1850: California became a state, and Marysville was incorporated as one of its seven orginal cities. The original town of Linda was laid out near Hammonton. 1852: The town of Linda was moved to its current location. Its original location was later buried under mine tailings, and remains buried to this day.
1851: Two huge fires destroyed most of Marysville, causing over half a million dollars in damages. James Pierson Beckwourth forged the safest trail through the Sierra Nevada Mountain Range to Marysville, but Marysville reneged on its agreement to pay him for it. 1852-1854: The original Bok Kai Temple was built in Marysville, almost two blocks upstream from the current one. 1858: The California State Fair was held in Marysville, in the area bounded by B Street, C Street, 5th Street, and 6th Street. 1868: Angry farmers in the Marysville/Yuba City area formed the Anti-Debris Association, protesting the fact that gold mining corporations upstream were dumping so much debris into the rivers that the rivers were overflowing and destroying their land.