| Cache Creek At Yolo, CA |
| Cache Creek Inflow To Settling Basin Near Yolo, CA |
| Cache Creek Near Lower Lake, CA |
| Cache Creek Outflow From Settling Basin Near Woodland, CA |
| Cache Creek Overflow Weir From Settling Basin Near Woodland, CA |
| Cache Creek Settling Basin Site B Near Woodland, CA |
| Cache Slough At Ryer Island, CA |
| Cache Slough At South Liberty Island Near Rio Vista, CA |
| Cahto Creek Near Laytonville, CA |
| Cajon Creek Below Lone Pine Creek Near Keenbrook, CA |
| Calaveras Creek Near Sunol, CA |
| Calleguas Creek Near Camarillo, CA |
| Campo Creek Near Campo, CA |
| Cantua Creek Near Cantua Creek, CA |
| Carbon Creek At Los Alamitos, CA |
| Carbon Creek Below Carbon Canyon Dam, CA |
| Carmel River At Robles Del Rio, CA |
| Carmel River Near Carmel, CA |
| Carpinteria Creek Near Carpinteria, CA |
| Caruthers Creek Near Ivanpah, CA |
| Castro Valley Creek At Hayward, CA |
| Central Irvine Channel Near Tustin, CA |
| Cherry Creek Below Dion River Holm Ph, Near Mather, CA |
| Cherry Creek Below Valley Dam Near Hetch Hetchy, CA |
| Cherry Creek Near Early Intake, CA |
| Chino Canyon Creek Below Tramway Near Palm Springs, CA |
| Chino Creek At Schaefer Avenue Near Chino, CA |
| City Creek Near Highland, CA |
| Clear Creek Near Idria, CA |
| Clear Creek Near Igo, CA |
| Coachella Canal Above All-American Canal Div, CA |
| Coachella Canal Near Desert Beach, CA |
| Coachella Canal Near Niland, CA |
| Colgan Creek Near Santa Rosa, CA |
| Colgan Creek Near Sebastopol, CA |
| Copeland Creek At Rohnert Park, CA |
| Corralitos Creek At Freedom, CA |
| Corte Madera Creek At Ross, CA |
| Cosumnes River At Michigan Bar, CA |
| Cottonwood Creek Near Cottonwood, CA |
| Cow Creek Near Millville, CA |
| Coyote Creek Above Hwy 237 At Milpitas, CA |
| Coyote Creek Near Buena Park, CA |
| Coyote Creek Near Gilroy, CA |
| Cristianitos Creek Above San Mateo Creek Near San Clemente, CA |
| Crow Creek Near Hayward, CA |
| Cucamonga Creek Near Mira Loma, CA |
| Cull Creek Above Cull Creek Res Near Castro Valley, CA |
| Cuyama River Below Buckhorn Canyon Near Santa Maria, CA |
| Cuyama River Near Ventucopa, CA |
