San Jacinto National Forest was established as the San Jacinto Forest Reserve by the United States General Land Office in California on February 22, 1897 with 740000acres. After the transfer of federal forests to the U.S. Forest Service in 1905, it became a National Forest on March 4, 1907. On July 1, 1908 the entire forest was combined with Trabuco Canyon National Forest to establish Cleveland National Forest, and the name was discontinued.