Fortunately, technology facilitates awareness of hazards with amazing speed:
•“It's legal to manually manipulate woody debris on rivers--that doesn't include chain saws, but does allow crosscut saws, z-drags, ropes or however you can move something via pure muscle or mechanical advantage. So, if managing agencies say "NO" to manually manipulating woody debris, it's BS and simple intimidation. Besides, studies have shown that cross-river tree falls do not improve the fish & wildlife habitat, but tree falls along the banks do improve fish and wildlife habitat--even on the Metolius.”
• quote was posted to the PNWwhitewater yahoogroup on 1/28/07
Unfortunately, technology also expedites distribution of ignorance and misinformation with equally fast speed:
•Cell phones, satellite phones and the internet  have made same-day notification possible from very remote places (e.g. the Lake Creek blow-out)
The individual who made the post has made numerous anti-wood-in-streams posts over the past couple of years.
Ironically, the poster zealously defended environmental extremist Dave Foreman (co-founder of “Earth First”) in a different thread
Sadly, he is apparently unaware of his own hypocrisy