(Milwaukie, OR)  --  The search for a boater who vanished in the Willamette River in Milwaukie is on hold for now.  Authorities say two men were in a canoe yesterday morning when the boat tipped over.  Only one of them made it back to shore.  The Clackamas County Sheriff's Office says the search will resume after conditions in the river make it less dangerous for recovery crews.