| Specimen ID | 237936 |
| Group | Plants |
| Genus | Najas |
| Species | minor |
| Common Name | brittle waternymph |
| State | SD |
| County | Union |
| Locality | McCook Lake, NW of Sioux City |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lewis and Clark Lake |
| HUC8 Number | 10170101 |
| HUC10 Name | Lime Creek-Missouri River |
| HUC10 Number | 1017010115 |
| HUC12 Name | Walnut Creek-Missouri River |
| HUC12 Number | 101701011504 |
| Map | |
| Collection Day | 15 |
| Collection Month | 10 |
| Collection Year | 2006 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Comments | Currently occupies 50-75 yards of the littoral zone with approx 40% coverage. Estimated to have been there since about 2003; chemical treatment planned for 2007. |
| Record Type | Personal communication |
| Earliest Record | state |
| Verifier | Dr. Gary E. Larson - SD State University Herbarium |
| Freshwater/Marine | Freshwater |
