Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
256647
| CA | Contra Costa | Canal [along the Delta de Anza Trail in Antioch, just N of the municipal reservoir] | 2008 |
18040003
| San Joaquin Delta | unknown |
862459
| CA | Contra Costa | canal at Sunnyridge Park adjacent to Gallagher Cir | 2015 |
18040003
| San Joaquin Delta | established |
862461
| CA | Contra Costa | Marsh Creek just S of intersection at Sand Creek Rd and Ohara Ave | 2015 |
18040003
| San Joaquin Delta | established |
241707
| CA | Contra Costa | West Antioch Creek in Antioch | 2007 |
18040003
| San Joaquin Delta | established |
160866
| CA | San Joaquin | Calaveras River in Bellota, CA (bridge near intersection of of Rt. 26 and Escalon Bellota Rd.) | 2004 |
18040003
| San Joaquin Delta | established |