| Specimen ID | 1883993 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | WA |
| County | Klickitat |
| Locality | Lake Umatilla, Railroad Island/Upper John Day Dam Ramp |
| Mapping Accuracy | Accurate |
| HUC8 Name | Middle Columbia-Lake Wallula |
| HUC8 Number | 17070101 |
| HUC10 Name | Lower Lake Umatilla |
| HUC10 Number | 1707010114 |
| HUC12 Name | John Day Dam-Lake Umatilla |
| HUC12 Number | 170701011408 |
| Map | |
| Collection Day | 25 |
| Collection Month | 6 |
| Collection Year | 2024 |
| Year Accuracy | Actual |
| Reference 1 |
| Ref. Number: | 46156 |
| Author: | Washington Department of Fish and Wildlife |
| Date: | 2025 |
| Title: | WDFW confirmed aquatic invasive species detections in 2024 |
| Publisher: | Washington Department of Fish and Wildlife |
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| Comments | Detected while conducting sediment samples using a petite Ponar grab sampler for early detection zebra and quagga mussel monitoring |
| Record Type | Literature |
| Verifier | Washington Department of Fish and Wildlife |
| Year Class | Adult |
