Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
157252
| IA | Johnson | Iowa River (R.M. 74) 1/2 mile below Burlington Street Dam, Iowa City | 2003 |
07080209
| Lower Iowa | established |
166635
| IA | Johnson | Iowa River below Iowa City | 2005 |
07080209
| Lower Iowa | established |
538355
| IA | Johnson | Iowa River(RM 74) near Iowa City | 2003 |
07080209
| Lower Iowa | established |
1334738
| IA | Louisa | Iowa River at Toolesboro, 1.9 river km upstream (southwest) of the confluence of the Mississippi and the Iowa rivers | 2014 |
07080209
| Lower Iowa | established |