Channel change at end of airport runway 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 Sam Demientieff talks about how the channel of the Tanana River has changed and diverted water away from this site, so there is less water running past this spot. Process Observed: Ice CollapseChanges in River Channel Date Process Observed: Wednesday, March 23, 2011 Galleries: End of Airport Runway Gallery