en CB01 OFFICIAL. At 85 years old, organic raisin farmer and lifelong river advocate Walt Shubin is not slowing down. He has dedicated the last 65 years of his life to restoring California’s once-mighty San Joaquin River to the wild glory he remembers as a young boy. Driven by his passion for the river, and despite worn out knees and joints, he takes us on a journey to help us understand why this river is so important to all of us as well.