This creek I fished yesterday was said to have a carbonated water spring in the late 1800s that came up when a mine shaft had punctured the main stem and forced the spring to the surface. Sure enough, there was about 20ft section of the creek with what looked like aquarium stones flowing. Didn't seem to bother the little bows at all. A little tricky to navigate but lots of little hide outs for the little 6-8" rainbows. Good way to beat the heat.