| Specimen ID | 1886615 |
| Group | Plants |
| Genus | Myriophyllum |
| Species | spicatum |
| Common Name | Eurasian watermilfoil |
| State | NJ |
| County | Morris |
| Locality | Southernmost end of Lake Hopatcong. Observed growing along retaining wall immediately west of Lakeside blvd. in Roxbury |
| Mapping Accuracy | Accurate |
| HUC8 Name | Middle Delaware-Musconetcong |
| HUC8 Number | 02040105 |
| HUC10 Name | Musconetcong River |
| HUC10 Number | 0204010505 |
| HUC12 Name | Lake Hopatcong-Musconetcong River |
| HUC12 Number | 020401050501 |
| Map | |
| Collection Day | 2 |
| Collection Month | 9 |
| Collection Year | 2025 |
| Year Accuracy | Actual |
| Status | established |
| Comments | Species is prevalent throughout entire lake. |
| Record Type | NAS sighting report |
| Verifier | Ian Pfingsten |
| Number Collected | 100 |
| Photo | |
