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: Feb 23 2017 at 1:33 PM PSTNext Issuance: Feb 24 2017 at 9:00 AM PST
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.

Verification - Historical Graphical RVF
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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 Tonight: Partly cloudy. Patchy frost. Lows in the upper 20s to lower 40s. Northwest winds 5 to 10 mph.

Friday: Partly cloudy. Patchy frost in the morning. Highs in the 40s to upper 50s. West winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon.

Friday Night: Partly cloudy in the evening then becoming mostly cloudy. A slight chance of showers in the evening. A chance of showers after midnight. Lows in the upper 20s to mid 40s. West winds 10 to 20 mph and becoming northwest 5 to 10 mph after midnight.

Saturday: Mostly cloudy. A chance of showers. Highs in the mid 40s to upper 50s. Northeast winds 5 to 10 mph and becoming south 10 to 15 mph in the afternoon. Chance of showers 50 percent.

Saturday Night: Cloudy. A chance of showers. Lows in the lower 30s to mid 40s. North winds 10 to 15 mph. Chance of showers 40 percent.

Sunday: Cloudy. A chance of showers. Highs in the 40s to upper 50s.

Sunday Night: Mostly cloudy. A chance of showers. Lows in the lower 30s to mid 40s.

Monday: Mostly cloudy. A slight chance of showers. Highs in the 40s to upper 50s.

Monday Night: Partly cloudy. A slight chance of showers. Lows in the lower 30s to mid 40s.

Tuesday through Wednesday: Partly cloudy. Highs in the lower 50s to mid 60s. Lows in the lower 30s to mid 40s.

Wednesday Night and Thursday: Mostly clear. Lows in the mid 30s to upper 40s. Highs in the mid 50s to upper 60s.
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.