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 18 2017 at 7:10 AM PDTNext Issuance: Oct 19 2017 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: Partly cloudy. Breezy. Patchy fog. Lows in the upper 30s to mid 50s. West winds 20 to 30 mph and becoming southwest 10 to 20 mph after midnight.

Thursday: Mostly cloudy. Patchy fog in the morning. A slight chance of rain in the afternoon. Highs in the 60s to lower 70s. Southwest winds 10 to 20 mph.

Thursday Night: Rain likely in the evening, then a chance of rain after midnight. Lows in the upper 30s to mid 50s. Southwest winds 10 to 20 mph and becoming west after midnight.

Friday: Partly cloudy. Highs in the 60s to lower 70s. West winds 10 to 20 mph.

Friday Night: Partly cloudy in the evening then becoming mostly clear. Lows in the mid 30s to lower 50s. Northwest winds 10 to 20 mph.

Saturday: Partly cloudy. Highs in the mid 60s to upper 70s.

Saturday Night and Sunday: Mostly clear. Lows in the 40s to 50s. Highs in the upper 60s to lower 80s.

Sunday Night through Tuesday: Clear. Lows in the mid 40s to upper 50s. Highs in the mid 70s to upper 80s.

Tuesday Night and Wednesday: Mostly clear. Lows in the mid 40s to upper 50s. Highs in the mid 70s to lower 90s.
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.