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Biological Stream Monitoring

The Iowa Department of Natural Resources and the State Hygienic Laboratory (SHL) have sampled fish and benthic macroinvertebrates to assess the biological integrity of Iowa's streams and rivers. 

BioNet is the online database the Iowa DNR uses to store, analyze, and report the activities of the Biological Monitoring and Assessment program. You may find all of the sampling locations, data collected, and much more information within the BioNet application.

Other Biological Monitoring Information

  • Report- Biological Assessment of Iowa's Wadeable Streams

    The Watershed Monitoring and Assessment Section (WMAS) of the Iowa DNR Environmental Services Division has released the report entitled, "Biological Assessment of Iowa's Wadeable Streams."

    The report describes a framework for conducting stream bioassessments and how it is used to evaluate the biological condition of Iowa's wadeable rivers and streams. The document also serves as a foundation for developing biological water quality standards for the protection of designated aquatic life uses and measuring progress toward the achievement of Federal Clean Water Act goals.

Download the Report