Invasion

Invasion Description

1st Tidal Record? freshwater tidal reach north of River Mile 30 (~168km upriver)[near Haverstraw]/NY/Hudson River (1996, USGS Nonindigenous Aquatic Species Program 2017)

1st Nontidal Record: in an artificial pond about 6 miles west of Schenectady/NY/Hudson River estuar (1968, Crocker 1979; Mills et al. 1996)

Geographic Extent

freshwater tidal reach north of River Mile 30,[near Haverstraw]/NY/Hudson River (1996, USGS Nonindigenous Aquatic Species Program 2017)