| Specimen ID | 749940 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | SD |
| County | Yankton |
| Locality | Missouri River, Lewis and Clark Lake, Midway Boat Ramp |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lewis and Clark Lake |
| HUC8 Number | 10170101 |
| HUC10 Name | Lewis and Clark Lake-Missouri River |
| HUC10 Number | 1017010109 |
| HUC12 Name | Lower Lewis and Clark Lake |
| HUC12 Number | 101701010909 |
| Map | |
| Collection Day | 14 |
| Collection Month | 11 |
| Collection Year | 2014 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft | dispersed |
| Status | unknown |
| Comments | No additional specimens found after subsequent search of the area. Veligers were identified in the area as far back as 2004 but no adults were found at that time. |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
| Year Class | adult |
