Napa River

Napa River
The Napa River in Napa, as viewed from Copia
Napa River watershed (Interactive map)
Location
Country	United States
State	California
Region	Napa County, Solano County
City	Napa
Physical characteristics
Source	Mount Saint Helena
• location	Mayacamas Mountains
• coordinates	38°39′52″N 122°37′14″W / 38.66444°N 122.62056°W / 38.66444; -122.62056[1]
• elevation	3,745 ft (1,141 m)[2]
Mouth	Carquinez Strait
• location	San Pablo Bay
• coordinates	38°4′12″N 122°14′38″W / 38.07000°N 122.24389°W / 38.07000; -122.24389[1]
• elevation	0 ft (0 m)
Length	55 mi (89 km)[3]
Basin size	426 sq mi (1,100 km2)[4]
Discharge
• average	210 cu ft/s (5.9 m3/s)
• minimum	0 cu ft/s (0 m3/s)
• maximum	26,200 cu ft/s (740 m3/s)
Basin features
Tributaries
• left	Conn Creek, Rector Creek, Soda Creek, Milliken Creek, Suscol Creek
• right	Dry Creek, Napa Creek, Carneros Creek

The Napa River is a river approximately 55 miles (89 km) long in the U.S. state of California. It drains a famous wine-growing region called the Napa Valley, in the mountains north of the San Francisco Bay. Milliken Creek and Mt. Veeder watersheds are a few of its many tributaries. The river mouth is at Vallejo, where the intertidal zone of fresh and salt waters flow into the Carquinez Strait and the San Pablo Bay.