Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1523921
| IA | Black Hawk | Cedar River | 2018 |
07080205
| Middle Cedar | unknown |
879856
| IA | Johnson | Iowa River [at confluence with Iowa River due E of Riverside] | 2015 |
07080209
| Lower Iowa | established |
879852
| IA | Johnson | Iowa River at the English River | 2015 |
07080209
| Lower Iowa | established |
1468605
| IA | Linn | Cedar River, ~0.5 km downstream of lowhead dam, along Old River Rd, Cedar Rapids | 2018 |
07080206
| Lower Cedar | unknown |
547342
| IA | Linn | Cedar River, just below Palisades State Park | 2013 |
07080206
| Lower Cedar | unknown |
1735530
| IA | Linn | Omitted by NAS | 2012 |
07080208
| Middle Iowa | unknown |
1735559
| IA | Linn | Omitted by NAS | 2013 |
07080208
| Middle Iowa | unknown |
1334706
| 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 |
1334765
| IA | Louisa | Iowa River at Toolesboro, 1.9 river km upstream (southwest) of the confluence of the Mississippi and the Iowa rivers | 2015 |
07080209
| Lower Iowa | established |
1334784
| IA | Muscatine | Cedar River at Conesville, immediately downstream (southwest) of the G28 road (also known as 231st street) bridge crossing the Cedar River | 2015 |
07080206
| Lower Cedar | established |
1334790
| IA | Muscatine | Cedar River at Conesville, immediately downstream (southwest) of the G28 road (also known as 231st street) bridge crossing the Cedar River | 2015 |
07080206
| Lower Cedar | established |
879857
| IA | Washington | English River [near confluence with Iowa River E of Riverside] | 2015 |
07080209
| Lower Iowa | established |