Napa River

Napa River
The Napa River in Napa, as viewed from Copia
Napa River watershed (Interactive map)
Location
CountryUnited States
StateCalifornia
RegionNapa County, Solano County
CityNapa
Physical characteristics
SourceMount Saint Helena
 • locationMayacamas Mountains
 • coordinates38°39′52″N 122°37′14″W / 38.66444°N 122.62056°W / 38.66444; -122.62056[1]
 • elevation3,745 ft (1,141 m)[2]
MouthCarquinez 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)
Length55 mi (89 km)[3]
Basin size426 sq mi (1,100 km2)[4]
Discharge 
 • average210 cu ft/s (5.9 m3/s)
 • minimum0 cu ft/s (0 m3/s)
 • maximum26,200 cu ft/s (740 m3/s)
Basin features
Tributaries 
 • leftConn Creek, Rector Creek, Soda Creek, Milliken Creek, Suscol Creek
 • rightDry 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.

  1. ^ a b U.S. Geological Survey Geographic Names Information System: Napa River
  2. ^ Google Earth elevation for source coordinates
  3. ^ About Napa River Archived 2009-05-05 at the Wayback Machine, Developing A Nutrient Management Plan for Napa River Watershed
  4. ^ Napa River Watershed Archived 2008-05-11 at the Wayback Machine, Napa County Resource Conservation District