Governor Gavin Newsom today highlighted a $3.5 million federal investment to improve access to the San Gabriel Mountains National Monument and enhance a key Southern California water source that provides Los Angeles County with one-third of its water supply. Federal, state, tribal and local partners celebrated the announcement today [Oct. 15], which will support trash removal projects, create new walking trails and install additional restrooms on this popular stretch of the San Gabriel River used primarily for recreation by surrounding underserved communities.