Menlo Park resident Leah Rogers, who volunteers with the Tuolumne River Trust, will debut a documentary about the river on Tuesday, April 21.
"Tuolumne To All of You" includes interviews with Peter Drekmeier, policy director for the trust; Dr. Brian Von Herzen of the Climate Foundation; and Robert Righter, historian and professor at Southern Methodist University.
The event starts at 6:30 p.m. at the Menlo-Atherton High School Performing Arts Center at 555 Middlefield Road in Atherton.
Go to tuolumne.org to register. Tickets are $8 for senior citizens and students under 18, and $12 for everyone else.