From the Greater Arkansas River Nature Association via the Salida Citizen:
GARNA and Trout Unlimited are teaming up to offer a free class on stream ecology. Topics will include factors that make up good fish habitat, and how water quality and bug presence influence fish health. The group will collect water samples and run quality tests including pH, dissolved oxygen and hardness & alkalinity. The class will do a “kick” in the pond and river and analyze collected sediment under a microscope—learning something about the variety of insect populations. The class is on Saturday, August 15 from 8:00 to about 10:30 AM. Meet instructor Ed Eberle from Trout Unlimited at the upper parking area of Sand Lake in Salida and please bring water, a snack, and shoes that can get wet. A Habitat stamp is required for anyone under age 64 and can be purchased at the Division of Wildlife. This class is free but please pre-register by calling GARNA at 719-539-5106. Limit 15 participants.
More Arkansas Basin coverage here.