| Specimen ID | 117296 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IN |
| County | Switzerland |
| Locality | Ohio River (R.M. 531.5) at Markland Hydroelectric Station at Markland Dam, Markland, IN (2 mi W of Florence, IN) |
| Mapping Accuracy | Accurate |
| HUC8 Name | Middle Ohio-Laughery |
| HUC8 Number | 05090203 |
| HUC10 Name | Big Bone Creek-Ohio River |
| HUC10 Number | 0509020310 |
| HUC12 Name | Craigs Creek-Ohio River |
| HUC12 Number | 050902031006 |
| Map | |
| Collection Day | 15 |
| Collection Month | 2 |
| Collection Year | 1994 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Record Type | Specimen |
| Disposal | 8 preserved |
| Museum Cat Number | INHS 15672 |
| Verifier | Kevin Cummings, Illinois Natural History Survey |
| Freshwater/Marine | Freshwater |
| Number Collected | 25 |
