For those of you who think it is Cottonwood, answer the following questions:

1) Why has this not been a problem every year?

2) Why was this substance still flowing down the river last fall & winter, long after the cottonwoods quit blooming?

3) How much Cottonwood fiber would it take to load the river up with the volume of gunk coming down it?

Remember how low the level of the lakes got over the past couple of years? Warm water mixed with a possible higher load of nutrients and you have algae bloom. The stuff is GROWING in the river. Was there over the holiday weekend and the volume of algae coming down the river was way more than all the cottonwood trees in Lewis County could produce and this stuff is coming down 24/7. I am sold on algae. Anybody with scientific proof?