Travelers talk about beavers and otters on Hay Slough Photo Credits: Chas Jones (L-R) Bill Schneider, Charlie Campbell, Ronnie Evans, and Knut Kielland talk about how the presence of beavers and otters can create hazardous ice on Hay Slough. Process Observed: BeaversThin IceOtters Date Process Observed: Wednesday, March 17, 2010 Galleries: Beaver dam Gallery