Invasion

Invasion Description

1st Record: Conowingo Dam/MD/Susquehanna River (1972, Mckeown et al. 1984)

Geographic Extent

NY-PA/Susquehanna Drainage; Conowingo Dam/MD/Susquehanna River (Mckeown et al. 1984); Edgewater/MD/Rhode River (2006, 2007, Rob Aguilar, personal communication); WV-VA-MD/Potomac Drainage; Stevensville/VA/ Mattaponi River (York Drainage)