In years past we have seen clusters up to several thousand individuals between the 4500 and 2500 foot markers.
At least three of our charcoal packets had been completely ripped out by the flood pulse.
Survey in DL7 and DL8
Areas of Cave TO BE Visited: Upstream Thunder
Project sponsoring trip: Hydrology
Feel free to leave comments about this trip. They will be added to the final report.
... Thunder Falls. The water seemed pretty low ...