San Dieguito River
General data
- Name: San Dieguito River
- Water system: Pacific Ocean
- Water type: River
- Progression: Pacific Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
The San Dieguito River is a major river in Southern California, United States. Its headwaters rise on the southern slope of the Volcan Mountains in San Diego County, and the river flows generally southwest for 23.8 miles (38.3 km), draining 346 square miles (900 km2) before emptying into the Pacific Ocean 20 miles (32 km) north of San Diego.