| Specimen ID | 862459 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | CA |
| County | Contra Costa |
| Locality | canal at Sunnyridge Park adjacent to Gallagher Cir |
| Mapping Accuracy | Accurate |
| HUC8 Name | San Joaquin Delta |
| HUC8 Number | 18040003 |
| HUC10 Name | Middle River-San Joaquin River |
| HUC10 Number | 1804000309 |
| HUC12 Name | Markley Canyon-San Joaquin River |
| HUC12 Number | 180400030907 |
| Map | |
| Collection Day | 21 |
| Collection Month | 4 |
| Collection Year | 2015 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Record Type | Personal communication |
| Verifier | Tom King |
| Freshwater/Marine | Freshwater |
