Ice bulge and overflow in Hay Slough 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 Charlie Campbell (center) from Tanana talks with Knut Kielland about ice bulge and overflow developing in Hay Slough. Process Observed: OverflowIce Bulge Date Process Observed: Tuesday, March 16, 2010 Galleries: Hay Slough, overflow Gallery