Big River Arroyo Grande | |
---|---|
Location | |
Country | United States |
State | California |
Region | Mendocino County |
Physical characteristics | |
Source | Impassable Rocks |
• location | 7 mi (11 km) south of Willits, California |
• coordinates | 39°19′3″N 123°22′23″W / 39.31750°N 123.37306°W[1] |
Mouth | Pacific Ocean |
• location | Mendocino, California |
• coordinates | 39°18′8″N 123°47′41″W / 39.30222°N 123.79472°W[1] |
• elevation | 0 ft (0 m) |
Basin size | 181 sq mi (470 km2) |
The Big River is a 41.7-mile-long (67.1 km)[2] river in Mendocino County, California, that flows from the northern California Coast Range to the Pacific Ocean at Mendocino, Mendocino County, California. From the mouth, brackish waters extend 8 miles (13 km) upstream, forming the longest undeveloped estuary in the state.