| Specimen ID | 1320139 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IL |
| County | Massac |
| Locality | Ohio River, RM 940- 942, E of Metropolis, from 1 mi upstream I-24 bridge to Massac Creek |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Ohio |
| HUC8 Number | 05140206 |
| HUC10 Name | Massac Creek-Ohio River |
| HUC10 Number | 0514020602 |
| HUC12 Name | Sevenmile Creek-Ohio River |
| HUC12 Number | 051402060202 |
| Map | |
| Collection Day | 16 |
| Collection Month | 8 |
| Collection Year | 1994 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Reference 1 |
| Ref. Number: | 28787 |
| Author: | Vinsel, R., and J. Tiemann |
| Date: | 2016 |
| Title: | Exotic aquatic mollusk collections in the Illinois Natural History Survey. |
| Publisher: | Illinois Natural History Survey |
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| Record Type | Specimen |
| Disposal | INHS |
| Museum Cat Number | INHS 16337 |
| Verifier | K.S. Cummings 8/1994 |
| Freshwater/Marine | Freshwater |
| Number Collected | 100 |
| Number Preserved | 100 |
