A dive team is searching for a 30-year-old man who possibly drowned in Herriman on Saturday afternoon. The man was swimming in Blackridge Reservoir, near 5600 West and 15000 South, and didnât resurface about 3:50 p.m., said Unified police Lt. Lex Bell. ctanner@sltrib.com Twitter: @CourtneyLTanner <iframe src="http://www.sltrib.com/csp/mediapool/sites/sltrib/pages/garss.csp" height="1" width="1" > </frame>