| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
1924643
| CA | Los Angeles | Rialto Pipeline PM-21 service connection. | 2026 |
18070203
| Santa Ana | |
|
1893402
| CA | Riverside | Santa Ana Valley Pipeline | 2025 |
18070203
| Santa Ana | |
|
1897451
| CA | Riverside | Santa Ana Valley Pipeline, Box Springs Feeder | 2025 |
18070203
| Santa Ana | |
|
1924627
| CA | San Bernardino | CB 16 service connection off Metropolitan Water District Rialto Pipeline which conveys water from Silverwood Lake. | 2026 |
18070203
| Santa Ana | |
|
1924644
| CA | San Bernardino | Rialto Pipeline CB-12 service connection | 2026 |
18070203
| Santa Ana | |
|
1893398
| CA | San Bernardino | Santa Ana Valley Pipeline | 2025 |
18070203
| Santa Ana | |