| Specimen ID | 1886696 |
| Group | Plants |
| Genus | Trapa |
| Species | bispinosa |
| Variety | iinumai |
| Common Name | water chestnut |
| State | VA |
| County | Fairfax |
| Locality | Beach 2 at Lake Barcroft |
| Mapping Accuracy | Accurate |
| HUC8 Name | Middle Potomac-Anacostia-Occoquan |
| HUC8 Number | 02070010 |
| HUC10 Name | Cameron Run-Potomac River |
| HUC10 Number | 0207001003 |
| HUC12 Name | Cameron Run |
| HUC12 Number | 020700100302 |
| Map | |
| Collection Day | 24 |
| Collection Month | 7 |
| Collection Year | 2025 |
| Year Accuracy | Actual |
| Status | established |
| Comments | Only one seed pod found by a local lifeguard. No additional plant material found. This is the only confirmed observation at Lake Barcroft in 2025. |
| Record Type | NAS sighting report |
| Verifier | Ian Pfingsten |
| Number Collected | 1 |
| Photo | |
