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Biological Stream Monitoring
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- Biological Assessment of Iowa's Streams and Rivers
The Iowa Department of Natural Resources and the University Hygienic Laboratory (UHL) have sampled fish and benthic macroinvertebrates to assess the biological integrity of Iowa's streams and rivers.
- Biological Assessment of Iowa's Wadeable Streams
This 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.
- Map of Biological sampling test sites
Sites that are sampled or "tested" to determine how much a stream's biological health is impacted by disturbances such as channelization, livestock grazing, manure spills, wastewater discharges and urban runoff.
- Map of Reference sites
Sampling sites representing stream conditions that are least disturbed by human activities, and are used to set biological criteria for measuring the health of other streams.
- Map of Random sites
Sampling sites representing a five year probabilistic (random) biological sampling survey.
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