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: Mar 17 2018 at 8:39 AM PDTNext Issuance: Mar 18 2018 at 9:00 AM PDT
Monitor Stage: 16.0 FeetFlood Stage: 18.0 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
4,520 13.85 Mar 6, 2016
Dec 11, 2014
Feb 9, 2014
Dec 23, 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: Mostly cloudy. Patchy dense fog. Lows in the upper 20s to lower 40s. North winds 5 to 10 mph.

Sunday: Mostly cloudy in the morning then becoming partly cloudy. Patchy dense fog in the morning. Highs in the 50s to lower 60s. East winds 5 to 10 mph and becoming south 10 to 15 mph in the afternoon.

Sunday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows in the 30s to lower 40s. Northwest winds 5 to 15 mph.

Monday: Partly cloudy in the morning then becoming sunny. Highs in the 60s. Northeast winds 10 to 15 mph and becoming east 10 to 20 mph in the afternoon.

Monday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows in the 40s. Southeast winds 5 to 15 mph.

Tuesday: Breezy. Rain likely. Rain may be heavy at times. Highs in the 50s.

Tuesday Night and Wednesday: Rain likely. Lows in the 40s to lower 50s. Highs in the lower 50s to mid 60s.

Wednesday Night: Breezy, rain. Lows in the 40s to lower 50s.

Thursday: Cloudy. A chance of rain. Highs in the 50s to lower 60s.

Thursday Night through Friday Night: Mostly cloudy. A chance of showers. Lows in the lower 30s to mid 40s. Highs in the 50s to lower 60s.

Saturday: Mostly cloudy. A slight chance of showers. Highs in the 50s to lower 60s.
Impacts - E19 Information
16.0 FeetMonitor Stage. WFO Monterey/San Francisco Bay Area may issue a Flood Watch to cover Napa Valley region flood potential at this stage.
18.0 FeetFlood Stage. Minor flooding of low lying agricultural areas along river begins. Low lying rural residential areas immediately adjacent to the river and some secondary roads affected.
20.0 FeetModerate flooding of the lower portions of Silverado Trail along the reach. Inundation of low lying residential areas along the east river bank in the vicinity of Pope Street Bridge. Secondary and many primary roads inundated. Most major cross roads inundated and unsafe.
22.0 FeetMajor flooding throughout the upper Napa Valley with most roads inundated, making travel extremely difficult and unsafe.
24.0 FeetDisastrous flooding. Widespread flooding across the upper Napa Valley with travel essentially impossible. The peak water level during the flood of 12/31/2005 measured 23.6 feet.
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.