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 talks about ice bulges and overflow in Hay Slough, and how quickly the conditions change. Process Observed: OverflowOpen Water (Refrozen)Ice Bulge Date Process Observed: Tuesday, March 16, 2010 Galleries: Mouth of Hay Slough Gallery