Yosemite would close: How a federal shutdown would affect people.
National parks: Parts of Golden Gate National Recreation Area, Point Reyes National Seashore, Yosemite National Park and other parks would close. However, closures in many areas would not be fully enforced. The Presidio in San Francisco would remain mostly open.
https://www.sfchronicle.com/bayarea/article/Yosemite-would-close-How-a-federal-shutdown-12506019.php