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
Issuance Time: Oct 12 2015 at 7:55 AM PDTNext Issuance: Oct 13 2015 at 9:00 AM PDT
Monitor Stage: N/A Flood Stage: 16.0 Feet
Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
 Most Recent 5 Years
Feb 9, 2014
Dec 23, 2012
3,500 10.95 Mar 14, 2012
2011* 7,330 14.99 Mar 20, 2011
Jan 20, 2010
 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)
Tonight: Clear. Lows in the lower 50s to mid 60s. West winds 5 to 10 mph and becoming north after midnight.

Tuesday: Sunny. Highs in the lower 80s to mid 90s. Northeast winds 10 to 15 mph and becoming southeast 5 to 10 mph in the afternoon.

Tuesday Night: Mostly clear. Lows in the upper 40s to mid 60s. Southwest winds 5 to 10 mph and becoming northwest after midnight.

Wednesday: Partly cloudy. Highs in the mid 70s to lower 90s. South winds 5 to 10 mph.

Wednesday Night: Mostly cloudy. Lows in the 50s to lower 60s. Southwest winds 5 to 10 mph.

Thursday: Mostly cloudy in the morning then becoming partly cloudy. Highs in the mid 70s to upper 80s.

Thursday Night through Saturday: Partly cloudy. Lows in the upper 40s to lower 60s. Highs in the 70s to 80s.

Saturday Night: Mostly cloudy. A slight chance of showers. Lows in the upper 40s to lower 60s.

Sunday and Sunday Night: Partly cloudy. Highs in the lower 70s to mid 80s. Lows in the upper 40s to lower 60s.

Monday: Sunny. Highs in the 70s to 80s.
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.

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.