Exposed river bank in middle slough of Sam Charley Island No flash player has been set up. Please select a player to play Flash videos. Video not playing? Update your browser or download the video clip Exposed river bank and melting in middle slough of Sam Charley Island believed to be exacerbated by the presence of beavers. Process Observed: Bank ErosionBeavers Date Process Observed: Saturday, April 8, 2006 Galleries: Bank erosion in middle slough of Sam Charley Island Gallery