| Specimen ID | 273892 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | CA |
| County | Stanislaus |
| Locality | Stanislaus River at Knights Ferry |
| Mapping Accuracy | Accurate |
| HUC8 Name | Upper Stanislaus |
| HUC8 Number | 18040010 |
| HUC10 Name | Lower Stanislaus River |
| HUC10 Number | 1804001007 |
| HUC12 Name | Wildcat Creek-Stanislaus River |
| HUC12 Number | 180400100701 |
| Map | |
| Collection Day | 24 |
| Collection Month | 11 |
| Collection Year | 2009 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Comments | Corrected reported county. |
| Record Type | NAS sighting report |
| Verifier | California Dept. of Fish and Game |
| Freshwater/Marine | Freshwater |
