Dangerous Construction

Dangerous Construction in Rivers

A number of projects constructed in rivers are extremely dangerous to river users, whether they are trained boaters, fishermen, swimmers or inner tubers.  Examples follow.

https://sites.google.com/site/riversafetycouncil2/SFSnoqualmie1w-2rootwadstacks.jpg?attredirects=0 

The outside of a bend is a very dangerous location for projects.  The current carries river users and debris directly into anything there unless they have the skill to avoid them.

South Fork Snoqualmie River






https://sites.google.com/site/riversafetycouncil2/SFSnoqualmie2downstreamrootwadcloseu.jpg?attredirects=0 

  


Water sieving through the gaps between the logs can trap hands and feet as well as pinning persons and other objects against the logs.

South Fork Snoqualmie River





http://sites.google.com/site/riversafetycouncil2/newSouthFork.JPG/newSouthFork-full;init:.JPG 

 






Floods made this private project much more dangerous, channeling the main current flow directly under the damaged logs in the structure.  

South Fork Snoqualmie River

 

 



https://sites.google.com/site/riversafetycouncil2/NFStilly1RootwadcablesatOsoslide.jpg?attredirects=0 

 

Heavy cables are often used in an attempt to secure log structures against the force of the current.  But broken cables remain hazards in many of our rivers.  

North Fork Stillaguamish River




  

https://sites.google.com/site/riversafetycouncil2/dangerousconstruction/Plum%20Landing%20Fall%20City%20cabled%20log%20labeled%20cropped.jpg?attredirects=0
 
 
 
 
 
 
 
Cables are dangerous because when logs shift in flood events, cables can break or shift and become difficult-to-see entanglement to people, boats and debris.  This cabled log upstream of the Fall City bridge is on one of the most popular inner tubing streams in King County, WA.
 
Snoqualmie River
 
 




https://sites.google.com/site/riversafetycouncil2/scrap.jpg?attredirects=0

 
 
 
This chained group of logs was torn loose from a Cedar River project during the January floods.  They lodged under the Williams Avenue Bridge, over 5 miles downstream in Renton, along with their rock anchor.  They narrowly missed the natural gas line supported by the bridge. 

Cedar River


http://sites.google.com/site/riversafetycouncil2/SkykomishGoldBar12007IMGP1027.JPG/SkykomishGoldBar12007IMGP1027-full;init:.JPG





Trees and projects that overhang a river can knock over a boater or innertuber.  At higher water, persons can be swept under them, trapped and drowned.  

Skykomish River near Sultan





https://sites.google.com/site/riversafetycouncil2/Logrootwadprotrudingintomaincurrent7.jpg?attredirects=0



Wood placement adjacent to or protruding into the main current can be a significant snagging hazard.

                                                                                    Snoqualmie River





http://sites.google.com/site/riversafetycouncil2/MiddleFork2SnoqualmieMasonThorsen199.JPG/MiddleFork2SnoqualmieMasonThorsen199-full;init:.JPG

Many old projects like this one on the outside of a bend on the Snoqualmie remain dangrous.  The current passes through the rootwads before turning right against the bank.  Anyone in the river is subject to being swept into the rootwads. 

Snoqualmie River








The 20-year old woman who drowned on this structure had inner tubed the river many times and was wearing a life jacket.

 Sol Duc River







https://sites.google.com/site/riversafetycouncil2/SolDuclogjam1a.jpg?attredirects=0



This highway department log structure on the outside of a bend on the Sol Duc River is the only one known to have caused death in Washington State.

Sol Duc River