Most community events are almost universally shared  on Meta/Facebook and rarely on other platforms.   Unfortunately Meta does not allow third parties to retrieve data from their site.* 

We recommend going to the Meta's "events" page, and searching for "Kern River Valley."  You may want to also search for specific locations, such as "Kernville," "Lake Isabella," "Wofford Heights,"  "Weldon," "Onyx," etc., for more narrowed and/or
comprehensive results.