| Specimen ID | 1322037 |
| Group | Reptiles-Snakes |
| Genus | Nerodia |
| Species | fasciata |
| Subspecies | fasciata |
| Common Name | Southern Watersnake |
| State | CA |
| County | Los Angeles |
| Locality | Machado Lake; Ken Malloy Harbor Regional Park |
| Mapping Accuracy | Accurate |
| HUC8 Name | San Gabriel |
| HUC8 Number | 18070106 |
| HUC10 Name | Alamitos Bay-San Pedro Bay |
| HUC10 Number | 1807010607 |
| HUC12 Name | Long Beach Harbor |
| HUC12 Number | 180701060701 |
| Map | |
| Collection Month | 9 |
| Collection Year | 2009 |
| Year Accuracy | Actual |
| Potential Pathway | released aquarium |
| Status | established |
| Reference 1 |
| Ref. Number: | 29051 |
| Author: | Reed, R.N., B.D. Todd, O.J. Miano, M. Canfield, R.N. Fisher, and L. McMartin |
| Date: | 2016 |
| Title: | Ecology and control of an introduced population of Southern Watersnakes (Nerodia fasciata) in Southern California |
| Journal: | Herpetologica |
| Volume: | 72 |
| Issue: | 2 |
| Pages: | 130-136 |
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| Comments | "Machado Lake is home to a large population of Southern Watersnakes, including all size classes and many reproductive individuals. We do not know how long Southern Watersnakes have been established in Machado Lake." |
| Record Type | Literature |
| Earliest Record | state |
| Freshwater/Marine | Freshwater |
| Number Collected | 303 |
