When did Yosemite become a National Park Yosemite Area Online › Forums › Our History › When did Yosemite become a National Park 3 replies, 3 voices Last updated by George Wright 7 months, 4 weeks ago Author Posts July 23, 2016 at 5:02 pm #957 George WrightParticipant @GeorgeWright What year did Yosemite become a National Park? July 23, 2016 at 6:24 pm #958 Corky StantonParticipant @Corky_Stanton 1890 July 25, 2016 at 1:14 pm #983 From LAParticipant @FromLA Muir and Johnson lobbied Congress for the Act that created Yosemite National Park on October 1, 1890. The State of California, however, retained control of Yosemite Valley and Mariposa Grove. August 2, 2016 at 9:31 pm #1248 George WrightParticipant @GeorgeWright Wasnt it Lincoln that made it a protected land? Author Posts You must be logged in to reply to this topic.