Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
619865
| CA | Los Angeles | Los Angeles County | 1924 |
18070105
| Los Angeles | established |
259216
| CA | Los Angeles | Los Angeles River | 2007 |
18070105
| Los Angeles | established |
1633150
| CA | Los Angeles | Los Angeles River, [just upstream of the Sepulveda Dam and downstream of Lake Balboa] | 2016 |
18070105
| Los Angeles | unknown |
785504
| CA | Los Angeles | Malibu Creek watershed | 2015 |
18070104
| Santa Monica Bay | established |
278676
| CA | Los Angeles | Puddingstone Reservoir, Los Angeles | 1959 |
18070106
| San Gabriel | unknown |
278677
| CA | Los Angeles | Puente Creek near Whittier | 1959 |
18070106
| San Gabriel | unknown |
4765
| CA | Los Angeles | stream near Pasadena, CA | 1924 |
18070105
| Los Angeles | established |