Iowa DNR
River & Stream Biological Monitoring
Fish and Benthic Macroinvertebrate Surveys
Physical Habitat Assessments
The Iowa DNR's ambient biological assessment program has surveyed fish, benthic macroinvertebrates, and aquatic habitat across the state to assess the health and biological integrity of Iowa's streams and rivers. BioNet provides access to all data collected as part of this program.
Find a Site by Stream Name
Name County EcoRegion