Thalassiosira weissflogii

A centric diatom

Collection Information for Thalassiosira weissflogii

Results limited to All Great Lakes Drainages.
Results also available in (click to export table to spreadsheet)

(click table headers to sort)
Specimen IDStateCountyLocalityYearHUC NumberDrainage NameStatus
240778MIWayneDetroit River196204260000Lake Erieestablished
242456NY Lake Ontario199304280002Lake Ontarioestablished
254764ON Lake Erie, EPA Station ER31199804260000Lake Erieestablished
254766OHLakeLake Erie, EPA Station ER32199804260000Lake Erieestablished
254786ON Lake Ontario, EPA Station ON12199604280002Lake Ontarioestablished
254790MIAlleganLake Michigan, off Saugatuck, EPA Station 310199504190000Lake Michiganestablished
254781MIAlleganLake Michigan, middle of lake W of Holland, EPA Station MI18M199804190000Lake Michiganestablished
254778ON Lake Erie, EPA Station ER92199604260000Lake Erieestablished
254779WIRacineLake Michigan, EPA Station MI17199804190000Lake Michiganestablished
254768OHLakeLake Erie, EPA Station ER36199604260000Lake Erieestablished
254770ON Lake Erie, EPA Station ER38199604260000Lake Erieestablished
254787ON Lake Ontario, EPA Station ON25199604280002Lake Ontarioestablished
254788ON Lake Ontario, EPA Station ON33M199604280002Lake Ontarioestablished
254789MIAlleganLake Michigan, off Saugatuck, EPA Station 310199504190000Lake Michiganestablished
254785MIOceanaLake Michigan, off Little Point Sable, EPA Station MI27M199804190000Lake Michiganestablished
254774PAErieLake Erie, EPA Station ER63199604260000Lake Erieestablished
254754NYChautauquaLake Erie, EPA Station ER09199804260000Lake Erieestablished
242455OH Portage River197304100010Cedar-Portageestablished
242454OH Lake Erie197504260000Lake Erieestablished
254791MIAlleganLake Michigan, off Saugatuck, EPA Station 340199404190000Lake Michiganestablished
254792MIChippewaLake Superior, EPA Station SU01M199604180000Lake Superiorestablished
242453  Lake Michigan196704190000Lake Michiganestablished
254762ON Lake Erie, EPA Station ER10199804260000Lake Erieestablished
254763ON Lake Erie, EPA Station ER15M199604260000Lake Erieestablished
254769OHLakeLake Erie, EPA Station ER36199904260000Lake Erieestablished
254771OHOttawaLake Erie, EPA Station ER58199904260000Lake Erieestablished
254772ON Lake Erie, EPA Station ER61199604260000Lake Erieestablished
254753NYChautauquaLake Erie, EPA Station ER09199604260000Lake Erieestablished

Citation for this information:
U.S. Geological Survey, 2026, Thalassiosira weissflogii: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 2/21/2026