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

Fish Program Statistics and Summary

Fish surveys are a critical component of the assessment process. The BioNet application also hosts data collected by other programs within the Iowa DNR that collected fish using the Bioassessment methods and protocols. These data are stored in the FishNet portion of BioNet. See also: FIBI, Iowa's EcoRegions, About the Bioassessment Program .

Total Fish Collected
Unique Fish Species
Total Surveys
FIBI Assessments

Top 5 Most Collected Fish

Species Total Catch
Central Stoneroller 134,285
Bluntnose Minnow 123,485
Creek Chub 120,489
White Sucker 119,013
Common Shiner 102,896

Top 5 Most Common Fish

Species % of all sites
Creek Chub 72.92%
White Sucker 64.55%
Bigmouth Shiner 62.45%
Johnny Darter 61.66%
Bluntnose Minnow 60.29%

BioNet Sessions

Methodology Sessions
Standard Wadeable 1871
Rapid Assessment 180
Fishkill Followup 60
Non-wadeable 53

FishNet Sessions

Methodology Sessions
Standard Wadeable 348
Game Fish Only 225
Fisheries Non-wadeable 138
Game Fish/Non-game Presence Only Survey 89
Stream Sample Date Score
Stream Sample Date Score