| Matanzas Creek At Santa Rosa, CA |
| Matilija Creek Near Res Near Matilija Hot Springs, CA |
| Mattole River Near Ettersburg, CA |
| Mattole River Near Petrolia, CA |
| Merced River At Happy Isles Bridge Near Yosemite, CA |
| Merced River At Pohono Bridge Near Yosemite, CA |
| Middle River At Middle River, CA |
| Middle River Near Holt, CA |
| Mill Creek Near Los Molinos, CA |
| Miner Slough At Hwy 84 Bridge, CA |
| Mission Creek At Rocky Nook Park At Santa Barbara, CA |
| Mission Creek Near Desert Hot Springs, CA |
| Mission Creek Near Mission St Near Santa Barbara, CA |
| Modesto Canal Near La Grange, CA |
| Mojave River At Afton, CA |
| Mojave River At Barstow, CA |
| Mojave River At Lo Narrows Near Victorville, CA |
| Mokelumne River At Andrus Island Near Terminous, CA |
| Morrison Creek Near Sacramento, CA |
| Mud Slough Near Gustine, CA |
| Murrieta Creek At Temecula, CA |
| Murrieta Creek Near Murrieta, CA |
| Nacimiento River Below Nacimiento Dam Near Bradley, CA |
| Nacimiento River Below Sapaque Creek Near Bryson, CA |
| Napa River Near Napa, CA |
| Napa River Near St Helena, CA |
| Navarro River Near Navarro, CA |
| New River At International Boundary At Calexico, CA |
| New River Near Westmorland, CA |
| North Fork American River At North Fork Dam, CA |
| North Fork Cache Creek At Hough Spring Near Clearlake Oaks, CA |
| North Fork Cache Creek Near Clearlake Oaks, CA |
| North Fork Gualala River Above South Fork Gualala River Near Gualala, CA |
| North Fork Trinity River At Helena, CA |
| North Mokelumne Near Walnut Grove, CA |
| North Yuba River Below Goodyears Bar, CA |
| Novato Creek At Novato, CA |
| Noyo River Near Fort Bragg, CA |
| Old River At Bacon Island, CA |
| Old River At Franks Tract Near Terminous, CA |
| Old River At Quimby Island Near Bethel Island, CA |
| Old River Near Byron, CA |
| Old River Near Delta Mendota Canal, CA |
| Oneill Lake Outlet Ch Near Fallbrook, CA |
| Oneill Lake Spill Ch Near Fallbrook, CA |
| Orcutt Creek Near Orcutt, CA |
| Orestimba Creek At River Rd Near Crows Landing, CA |
| Orestimba Creek Near Newman, CA |
| Pacheco Creek Near Dunneville, CA |
| Pajaro River At Chittenden, CA |
