By Molly Moser
The Iowa Department of Natural Resources Aquarium and Hatchery in Guttenberg remains open until mid-October this fall, while staff conducts testing at numerous sites along the river for a long-term resource-monitoring program.
At each of 35 randomly selected sites in pool 10 and 22 in pool 11, fisheries technician Kevin Hanson supervised testing of water quality, observations of habitat and vegetation, and the collection and documentation of fish in the area.