| Sacramento River Below Georgiana Slough, CA |
| Sacramento River Below Wilkins Slough Near Grimes, CA |
| Sacramento River Deep Water Ship Channel Near Rio Vista, CA |
| Sagehen Creek Near Truckee, CA |
| Salinas River At Paso Robles, CA |
| Salinas River At Soledad, CA |
| Salinas River Near Bradley, CA |
| Salinas River Near Chualar, CA |
| Salinas River Near Spreckels, CA |
| Salmon River At Somes Bar, CA |
| Salsipuedes Creek Near Lompoc, CA |
| Salt Creek At Murrieta Rd Near Sun City, CA |
| Salt Creek Near Mecca, CA |
| Salt Slough At Hwy 165 Near Stevinson, CA |
| San Antonio Creek At Los Alamos, CA |
| San Antonio Creek At Riverside Drive Near Chino, CA |
| San Antonio Creek Near Sunol, CA |
| San Antonio River Near Lockwood, CA |
| San Benito River At Hwy 156 Near Hollister, CA |
| San Benito River Near Willow Creek School, CA |
| Sand Canyon Creek At Irvine, CA |
| Sand Canyon Creek Near Highland, CA |
| Sandia Creek Near Fallbrook, CA |
| San Diego River At Fashion Valley At San Diego, CA |
| San Diego River At Mast Rd Near Santee, CA |
| San Francisquito Creek At Stanford University, CA |
| San Gabriel River Above Whittier Narrows Dam, CA |
| San Gabriel River Below Santa Fe Dam Near Baldwin Pk, CA |
| San Gregorio Creek At San Gregorio, CA |
| San Jacinto River Above State Street Near San Jacinto, CA |
| San Jacinto River At Ramona Expressway Near Lakeview, CA |
| San Jacinto River Near Elsinore, CA |
| San Jacinto River Near San Jacinto, CA |
| San Jacinto River Near Sun City, CA |
| San Joaquin River Above Merced River Near Newman, CA |
| San Joaquin River At Fremont Ford Bridge, CA |
| San Joaquin River At Jersey Point, CA |
| San Joaquin River At North San Mateo Rd Near Mendota, CA |
| San Joaquin River At Prisoners Pt Near Terminous, CA |
| San Joaquin River Below Friant, CA |
| San Joaquin River Below Garwood Bridge At Stockton, CA |
| San Joaquin River Near Crows Landing, CA |
| San Joaquin River Near Mendota, CA |
| San Joaquin River Near Newman, CA |
| San Joaquin River Near Vernalis, CA |
| San Jose Creek Near Goleta, CA |
| San Juan Creek At La Novia St Bridge At San Juan Capis, CA |
| San Lorenzo Creek Above Don Castro Res Near Castro V, CA |
| San Lorenzo Creek At Hayward, CA |
| San Lorenzo Creek At San Lorenzo, CA |
