Describing open water 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 Knut Kielland introduces this area of open water midway down the middle slough of Sam Charley Island. Process Observed: Open Water Date Process Observed: Thursday, February 2, 2006 Galleries: Midway down the middle slough of Sam Charley Island Gallery