The search concluded Saturday for a 19-year-old man who drowned in Canyon Lake, according to the Comal County Sheriff’s Office.Around 9 a.m. on April 20, Texas Parks and Wildlife Game Wardens found Roiner Alejandro Rojas Pereira’s body near Overlook Park, the sheriff’s office said on Facebook.Pereira of San Antonio was floating on a tube around 7 p.m. on April 14 when he drifted toward the water intake near the Canyon Lake Dam.Pereira did not kn…