Cosumnes River Preserve The Cosumnes River Preserve consists of over 50,000 acres of wildlife habitat and agricultural lands owned by seven land-owning Partners. Website Type of organization: parks/reserve Current Events Upcoming Events Past Events There are currently no events. There are currently no events. 25 May 25 May - 25 May Volunteer and Outreach Coordinator 2024-05-25 @ 10:00 (PST) - 2024-05-25 @ 01:00 (PST) 13501 Franklin Boulevard, Walnut Grove, CA, USA Community celebration (festival, street fair, other)