COTTAGE GROVE – Authorities on Wednesday recovered the body of a man believed to be missing Oakland resident Brian Kenny Trumbo. The body was found on the northeast side of Dorena Lake, near the Harms Park boat landing. The popular recreation area is a few miles southeast of Cottage Grove. “We haven’t made a positive identification yet but we have a lot of indicators that it’s him,” said Sgt. Carrie Carver, spokeswoman for the Lane County Sheriff’s Office. The body was found in a muddy and icy area on the north side of the reservoir, in an area that is …