National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

Latitude: 38.51º NLongitude: 122.45º WElevation: 195 Feet
Location: Napa County in CaliforniaRiver Group: Russian Napa
Monitor Stage: N/A Flood Stage: 16.0 Feet

Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
 Most Recent 5 Years
Dec 11, 2014
Feb 9, 2014
Dec 23, 2012
3,500 10.95 Mar 14, 2012
2011* 7,330 14.99 Mar 20, 2011
 Historical High Stage/Flow Events (Period of Record - Jun 2000 to Present)*
Dec 31, 2005
Feb 17, 1986
1997 13,100 17.70 Jan 1, 1997
Dec 22, 1955
1963 12,300 15.30 Jan 31, 1963
* Discharge affected by regulation or diversion
** Most recent continuous record back to Jun 2000 with segmented periods back to Oct 1929
*** Flood of record at old gage site
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ506)
Rest of Today: Sunny. Highs in the 70s to 80s. West winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon.

Tonight: Clear. Lows in the 40s to mid 50s. Northwest winds 10 to 20 mph.

Monday: Sunny, breezy. Highs in the mid 70s to upper 80s. Northwest winds 20 to 30 mph decreasing to 10 to 20 mph in the afternoon.

Monday Night: Mostly clear. Lows in the 40s to upper 50s. Northwest winds 10 to 20 mph.

Tuesday: Sunny, breezy. Highs in the upper 70s to lower 90s. Northwest winds 10 to 20 mph increasing to 20 to 30 mph in the afternoon.

Tuesday Night: Mostly clear. Lows in the 40s to upper 50s.

Wednesday: Sunny. Highs in the mid 70s to lower 90s.

Wednesday Night: Clear. Lows in the 40s to upper 50s.

Thursday and Thursday Night: Mostly clear. Highs in the lower 70s to mid 80s. Lows in the 40s to upper 50s.

Friday: Sunny. Highs in the 60s to 70s.

Friday Night: Partly cloudy. Lows in the mid 40s to lower 50s.

Saturday: Partly cloudy in the morning then becoming sunny. Breezy. A slight chance of showers. Highs in the lower 60s to mid 70s.
Impacts - E19 Information
16.0 FeetFlood Stage. Minor flooding begins to affect the entire reach including the lowest areas of towns along the reach. Rural areas including many secondary roads affected. Primary roads begin to flood.
18.0 FeetModerate flooding of the lower portions of towns along the entire reach. Crop losses and erosion of land becoming widespread. Most secondary and many primary roads inundated.
19.0 FeetMajor flooding throughout the upper Napa Valley with most roads inundated making travel extremely difficult. Moderate to severe damage to all towns along the reach.
20.0 FeetDisastrous flooding across upper Napa Valley with travel essentially impossible. Extreme damage to all towns along the reach.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS San Francisco Bay Area-Monterey Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.