(Troutdale, OR) -- There are new warning signs on the Sandy River to alert rafters about a dangerous change in the river's course. The December storms moved the river, created a log jam and a new sandbar. Signs have been posted upriver that read "Danger, Stay Right." While installing the sign, the Multnomah County Sheriff's Office removed a submerged drift boat and a kayak that was damaged beyond repair. River users need to use caution between Oxbow Regional Park and Dabney State Recreation Area.