Invasion

Invasion Description

1st tidal Record; Wilmington/DE/Lower Brandywine Creek (9/21/2021, USGS Noninfdigenous Aquatic Species Database 2022).

1st Watershed Record:  near Gring's Mill Recreation Area, Berks County/PA/Tulpehocken Creek,(3/16/2020), PA/Schylkill River watershed, 14 records in 2021, USGS Noninfdigenous Aquatic Species Database 2022).

Geographic Extent

Wilmington/DE/Lower Brandywine Creek (9/21/2021, USGS Noninfdigenous Aquatic Species Database 2022).