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

Brown Trout Salmo trutta

Family
Salmonidae (Trouts)
Tolerance
Sensitive
Trophic Class
Top Carnivore
Is Exotic to Iowa?
True
Is Lithophilous Spawner?
False
Is Hybrid?
False
State Listing Status
Not Listed
Assessment Program Statistics

This species was found at 61 bioassessment sites, 5 rapid fish bioassessment sites, 56 fisheries assessment sites, and 3 fisheries presence-only assessment sites. In total, it was collected at 112 distinct sites, or 9.5% of the 1177 total sites monitored by the bioassessment program. It is the 45th most commonly collected species.

The Brown Trout was collected in 124 bioassessment sampling sessions and 120 fisheries assessment sessions. It was present in 5 rapid bioassessment sessions and 3 presence-only sessions.

The biological assessment program has collected a total of 22,824 individual Brown Trout specimens, ranking it the #14 most collected fish.

Species Distribution Map