Iowa DNR
BioNet
River & Stream Biological Monitoring
Fish and Benthic Macroinvertebrate Surveys
Physical Habitat Assessments

Sampling Sites - Statistics and Summary

1,205
Total Sites
103
Reference Sites
31.12%
Sites Sampled for Fish in Last 5 Years
27.39%
Sites Sampled for Invertebrates in Last 5 Years

Thermal Classification

Major Basin

EcoRegion Distribution