| Specimen ID | 1421002 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | TX |
| County | Williamson |
| Locality | North Fork San Gabriel River at Lake Georgetown [just NW of Georgetown] |
| Mapping Accuracy | Accurate |
| HUC8 Name | San Gabriel |
| HUC8 Number | 12070205 |
| HUC10 Name | North Fork San Gabriel River |
| HUC10 Number | 1207020501 |
| HUC12 Name | Middle Fork San Gabriel River-North Fork San Gabriel River |
| HUC12 Number | 120702050106 |
| Map | |
| Collection Day | 6 |
| Collection Month | 11 |
| Collection Year | 2017 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Reference 1 |
| Ref. Number: | 30764 |
| Author: | Texas Parks and Wildlife Department. |
| Date: | 2017 |
| Title: | Zebra mussels spreading at lakes Georgtown, Livingston. |
| Publisher: | Texas Parks and Wildlife Department |
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| Comments | Veligers found in water samples Oct. 6, 2017. |
| Record Type | Literature |
| Verifier | Brazos River Authority / Texas Parks and Wildlife |
| Freshwater/Marine | Freshwater |
| Year Class | veliger and juvenile |
