Below is a longstanding mystery unique to the American River. The more you fish the more you collect, and while it’s not a known invasive, its a clear demonstration of what you’re carrying to the next watershed.

The only insect hatching this morning was a #20 mayfly, considerable numbers and small enough to inhale. I’ve had this “goober” buildup occur almost every trip – regardless of whether there was insect activity or not.

Anything touching the water gets these small shiny mucous stains, vest, shirt sleeves, anything.

Anyone seen anything like it?

Tags: Unknown insect phenomenon, American River, goober