The body of Naomi Pomeroy, who appeared on “Top Chef Masters,” was found in an Oregon river after she drowned during a tubing accident, law enforcement officials said. The Benton County Sheriff’s Office said Pomeroy, 49, drowned Saturday evening in the Willamette River. “An investigation by BCSO determined three floaters on tubes and a paddle board, secured together, were caught on an exposed snag in the water. One of the floaters, Naomi, was pulled under the water and held by the paddle board leash,” thesheriff’s office said in a statement. Personnel from the Corvallis Fire Department rescued…