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Reported Obstructions and Alerts

Oregon's rivers are inherently dangerous, and some are prone to natural obstructions based on the topography and geology of the water basin.  The obstructions listed on this page will list rivers that consistently have log jams, strainers or other debris. 
During the winter and spring, debris flows and fallen trees are common.  By the summer, dropping water levels expose sunken logs and strainers, and the current often becomes stronger in the main channels on rivers and can take less maneuverable boats or inflatable inner tubes and float toys directly into the obstructions.  Take the time to plan ahead and scout the river before you put in. Expect sudden drop-offs into deeper water along reservoir and lake banks.  Always wear your life jacket.  
Inflatable floating devices (i.e. air mattresses, pool toys and inner tubes) are not designed for rivers and have limited directional control.  Please avoid using these devices for river recreation.


Columbia River Bar Pilots

ORS 830.160 Board authority to remove obstructions from water: The State Marine Board may cause the removal of any obstruction consisting of logs, rocks or other debris resulting from natural causes from the waters of this state if the board finds the obstruction to be an extraordinary hazard to boating safety.  The board may pay the cost of such removal from amounts reserved therefore in the account created by ORS 830.140.  
DISCLAIMER: Obstruction removal is ultimately the responsibility of the property owner.  The agency, along with marine law enforcement may work with property owners on mitigation plans. The agency will selectively mitigate obstructions based on the location, type of boating traffic/frequency, ability to mitigate using equipment from land/water and meeting the definition of "extraordinary hazard" to boating safety.  Rivers are dynamic and high water events frequently change the location of obstructions. Downed trees and other debris also provide important habitat for fish and marine life.  Each obstruction is evaluated individually after consultation with Marine Law Enforcement.  Where practical, marine deputies may attempt to create safe passage with recommendations for boaters, in addition to posting signage at nearby ramps.  It's the boater/floater's responsibility to scout ahead, keep a sharp lookout and take early and substantial action to avoid being taken by the current into an obstruction.   

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