It looks like we've passed the worst of it, thankfully. The New Brunswick government's River Watch web site is forecasting stable or decreased flows all along the Saint John river. This year was not nearly as bad as 2008.
Chris M is reporting that the mighty Restigouche River is going down. As I mentioned, CN put a ballast train on the bridge at Matapedia at the beginning of April, and stationed a locomotive (CN 9592) there to shunt the cars out of the way of passing trains.