| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 158937 | PA | Erie | Walnut Creek | 2000 | 04120101 | Chautauqua-Conneaut | established |
| 158938 | PA | Erie | Sixteenmile Creek [near Northeast, PA] | 2000 | 04120101 | Chautauqua-Conneaut | established |
| 1545141 | PA | Erie | Twentymile Creek, from the mouth of the stream to the waterfall. | 2003 | 04120101 | Chautauqua-Conneaut | stocked |
| 1545139 | PA | Erie | Twentymile Creek above the waterfall just below an old railroad bridge. | 2003 | 04120101 | Chautauqua-Conneaut | stocked |
| 1891932 | PA | Erie | [No locality description provided] | 2025 | 04120101 | Chautauqua-Conneaut | |
Citation for this information:
U.S. Geological Survey, 2025,
Oncorhynchus mykiss: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 12/23/2025