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 135,980
Bluntnose Minnow 126,377
Creek Chub 123,643
White Sucker 123,213
Common Shiner 104,504

Top 5 Most Common Fish

Species % of all sites
Creek Chub 71.84%
White Sucker 64.01%
Johnny Darter 60.75%
Bigmouth Shiner 60.68%
Bluntnose Minnow 58.74%

BioNet Sessions

Methodology Sessions
Standard Wadeable 1922
Rapid Assessment 180
Fishkill Followup 61
Non-wadeable 53

FishNet Sessions

Methodology Sessions
Standard Wadeable 414
Game Fish Only 227
Fisheries Non-wadeable 138
Game Fish/Non-game Presence Only Survey 92
Stream Sample Date Score
Stream Sample Date Score