.
| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 252451 | WI | Ashland | Ashland County | 2008 | 04010302 | Bad-Montreal | collected |
| 252479 | WI | Manitowoc | Manitowoc County | 2008 | 04030101 | Manitowoc-Sheboygan | collected |
| 252480 | WI | Sheboygan | Sheboygan County | 2008 | 04030101 | Manitowoc-Sheboygan | collected |
| 252476 | WI | Waushara | Waushara County | 2008 | 04030201 | Upper Fox | collected |
| 252465 | WI | Oconto | Oconto County | 2008 | 04030104 | Oconto | collected |
| 252455 | WI | Forest | Forest County | 2008 | 04030202 | Wolf | collected |
| 252477 | WI | Marquette | Marquette County | 2008 | 04030201 | Upper Fox | collected |
| 252464 | WI | Menominee | Menominee County | 2008 | 04030202 | Wolf | collected |
| 1612253 | WI | Marinette | [No locality description provided] | 2018 | 04030105 | Peshtigo | established |
| 1597915 | WI | Iron | [No locality description provided] | 2011 | 04010302 | Bad-Montreal | established |
| 1655835 | WI | Marquette | Wisconsin, Marquette, Crystal Lake | 1952 | 04030201 | Upper Fox | established |
| 1655829 | WI | Racine | Racine County | 1900 | 04040002 | Pike-Root | established |
| 252351 | WI | Douglas | Douglas County | 2008 | 04180000 | Lake Superior | collected |
| 252452 | WI | Iron | Iron County | 2008 | 04180000 | Lake Superior | collected |
Citation for this information:
U.S. Geological Survey, 2024,
Rumex obtusifolius: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 4/25/2024