Imperial Beach Pier
| J | F | M | A | M | J | J | A | S | O | N | D | |
| Cuyamaca State Park | ● | |||||||||||
| Dixon Lake | ● | |||||||||||
| Lake Jennings | ● | |||||||||||
| Mission Bay | ● | ● | ● | ● | ● | |||||||
| Point Loma | ● | |||||||||||
| Salton City | ● | |||||||||||
| San Elijo Lagoon | ●* | ● | ||||||||||
| Silver Strand | ● | ● | ● | █ | ||||||||
| Tijuana Slough NWR | ● | ● | ● | ● |
*This individual was too far away to ID to species, but both Common and Pacific Loons are extremely rare in summer.