Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1241427
| OR | Multnomah | Portland; east bank of the Willamette River at Oregon Yacht Club | 2013 |
17090012
| Lower Willamette | unknown |
272311
| WI | Dane | North detention pond in Orchid Heights Park | 2010 |
07090002
| Middle Rock | unknown |
1426670
| WI | Dane | Orchid Heights Park,Detention Ponds | 2010 |
07090002
| Middle Rock | eradicated |
272312
| WI | Dane | South detention pond in Orchid Heights, Wi | 2010 |
07090002
| Middle Rock | unknown |
1426988
| WI | Walworth | Pond (near Whitewater) | 2010 |
07090002
| Middle Rock | unknown |