Things are a little different this year...
Johnson's Beach (private beach in Guerneville; reservations required): https://johnsonsbeach.com/covid19/
Super cool Johnson's Beach social d video: https://www.facebook.com/johnsonsbeachrussianriver/videos/373139703660776/
Monte Rio Beach (public beach in Monte Rio): https://www.mrrpd.org/wp-content/uploads/2020/05/COVID-19-Guidelines-for-Monte-Rio-Parks.pdf
Steelhead Beach (county parks beach in Forestville): https://parks.sonomacounty.ca.gov/Visit/Steelhead-Beach-Regional-Park/
Sunset Beach (county parks beach in Forestville): https://parks.sonomacounty.ca.gov/Visit/Sunset-Beach-River-Park/
Mom's Beach (county parks beach in Forestville): https://parks.sonomacounty.ca.gov/Visit/Forestville-River-Access/
Casini Ranch Family Campground (private beach in Duncans Mills; day use fee): (800) 451-8400
Jenner Boat Launch (no beach, just a boat launch): http://dbw.ca.gov/BoatingFacilities/Details/1351