California Gold Rush | Definition, History, & Facts ...
California Gold Rush, rapid influx of fortune seekers in California that began after gold was found at Sutter's Mill in early 1848 and reached its peak in 1852. According to estimates, more than 300,000 people came to the territory during the Gold Rush.. In 1848 John Sutter was having a water-powered sawmill built along the American River in Coloma, California, approximately 50 miles (80 km ...