In a Tuesday, March 20, 2012 photo, Colin Irons of Aubrey tosses a common carp back into the Elm Fork of the Trinity River near the canoe launch area. Flood waters of the Elm Fork dragged many fish into the parking lot of the Ray Roberts State Park Greenbelt off US 380, in Denton, Texas. (AP Photo/Denton Record-Chronicle, David Minton)