Yumi and I checked out Byrne Creek carefully again today and saw lots of caddisfly larva! We saw a total of 16 of them while we were looking for fry, ranging from u/s of Tag 517, all the way down to just above the stop log at the upper end of the sediment pond, and even below the gravel pile in the sediment pond. There were also loads of mayflies, including beneath rocks in the gravel pile in the sediment pond.
Caddisflies and mayflies do not tolerate pollution, so things are looking good!