Saturday, August 234th annual Pecatonica River Art Confluence, from 2-4 p.m. Pecatonica River Art Show Opening. 10 a.m. deadline for artists to drop-off work at RVTC. Information: Lyric Ozburn (608) 523-4326.Goose Chaser Farm, "I say tomato" workshop, 10 a.m., RSVP: (608) 523-4165 or e-mail: thegoosechaserfarm.comGreen County Historical Museum, open 1 to 4 p.m., 1617 9th St., Monroe.Green County Humane Society Dog and Car Wash, 9 a.m. to 2 p.m. Saturday, Aug. 23 at Guerin Chiropractic Office, 1419 9th St., Monroe.