| Specimen ID | 229940 |
| Group | Plants |
| Genus | Myriophyllum |
| Species | spicatum |
| Common Name | Eurasian watermilfoil |
| State | IA |
| County | Ringgold |
| Locality | Walnut Creek Marsh |
| Mapping Accuracy | Accurate |
| HUC8 Name | Upper Grand |
| HUC8 Number | 10280101 |
| HUC10 Name | Headwaters Grand River |
| HUC10 Number | 1028010101 |
| HUC12 Name | Walnut Creek |
| HUC12 Number | 102801010105 |
| Map | |
| Collection Year | 1995 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | extirpated |
| Record Type | Personal communication |
| Earliest Record | drainage |
| Freshwater/Marine | Freshwater |
