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River & Stream Biological Monitoring
Fish and Benthic Macroinvertebrate Surveys
Physical Habitat Assessments
Benthic Macroinvertebrates
Gammarus
Gammarus
Scuds and sideswimmers
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Taxa Hierarchy
Phylum
Arthropoda
Class
Malacostraca
SubClass
Eumalacostraca
Order
Amphipoda
Family
Gammaridae
Genus
Gammarus
Species
ITIS Links
TSN
93773
Parent TSN
93745
Metric Values
Tolerance
4.0
FFG
Collector/Gatherer
Habit
Unidentified
CW Ind
False
Assessment Program Statistics
Total Individuals Collected
5,981
Number of Unique Sites Collected
207
Taxa Distribution Map
Esri, USGS | Iowa DNR, Esri, TomTom, Garmin, FAO, NOAA, USGS, EPA, NPS, USFWS | IADNR BioNet
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1/1/1994
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1/1/2026
1/1/1994
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1767225600000
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