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

Calculate Your Own FIBI

Complete the fields below to calculate a Fish Index of Biotic Integrity value from your own sampling data.

This calculation assumes you have used the same sampling methods and protocols currently used by the Iowa DNR Bioassessment Program. Failure to follow the Bioassessment methods and protocols can affect the final score.

The form contains data from a previous session, which you may use, edit, and submit again.

You may also to start over.

Required Session Data

Not required- but useful if you'd like to see how the site compares to reference sites in the same ecoregion.
Optional, displayed on results page. Handy if you want to include a note in your summary report.

Collected Fish

Fish Species # Collected