| Specimen ID | 238233 |
| Group | Plants |
| Genus | Najas |
| Species | minor |
| Common Name | brittle waternymph |
| State | IA |
| County | Tama |
| Locality | Casey Lake |
| Mapping Accuracy | Accurate |
| HUC8 Name | Middle Cedar |
| HUC8 Number | 07080205 |
| HUC10 Name | Wolf Creek |
| HUC10 Number | 0708020508 |
| HUC12 Name | Wolf Creek |
| HUC12 Number | 070802050809 |
| Map | |
| Collection Year | 2003 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Comments | Sonar whole lake in 2004 (brittle naiad observed in 2005, 2006) |
| Record Type | Personal communication |
| Earliest Record | drainage |
| Freshwater/Marine | Freshwater |
