| Specimen ID | 744963 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | CA |
| County | Contra Costa |
| Locality | Green Valley Creek, north of Dannville |
| Mapping Accuracy | Accurate |
| HUC8 Name | Suisun Bay |
| HUC8 Number | 18050001 |
| HUC10 Name | Walnut Creek-Frontal Suisin Bay Estuaries |
| HUC10 Number | 1805000102 |
| HUC12 Name | San Ramon Creek |
| HUC12 Number | 180500010201 |
| Map | |
| Collection Day | 21 |
| Collection Month | 4 |
| Collection Year | 2014 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
