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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 .
- 55 mi (89 km)
- Mount Saint Helena
Napa was the first location in California to be part of the North Coast American Viticultural Area. Renowned for its wine due to the Mediterranean climate, surprisingly only about 9% of Napa's acreage is planted with grapes. The Napa River traverses the city on its journey to the San Pablo Bay.
- 20 ft (6 m)
- Napa
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History of Napa River flooding. The Napa River runs some 55 miles (89 km) from Mt. St. Helena to San Pablo Bay and drains a watershed of about 426 square miles (1100 km²). The river is prone to seasonal flooding from November through April each year.
The Napa River is one of the largest Central Coast Range rivers draining 426 sq. miles on its 50 mile journey from Mt. St. Helena to the San Pablo Bay.
Jul 13, 2012 · The Napa River remains the valley’s spine, its central geographic feature. Yet it shows signs of distress. The river is listed as impaired by sedimentation under the Clean Water Act, and increasing local water demand may threaten dry season flows.
About Napa. History of Napa. Napa County Historical Society. This brief history of the City of Napa and the accompanying photos are provided courtesy of the Napa County Historical Society website. Nathan Coombs laid out the original town site of Napa City in 1847.
Mar 11, 2024 · Napa, city, seat (1850) of Napa county, west-central California, U.S. Founded in 1847 and lying on the Napa River, the city was the head of river navigation, and it became a port for the shipment of cattle, lumber, gold, and quicksilver to San Francisco, 50 miles (80 km) to the south.