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| Latitude: 38.51º N | Longitude: 122.45º W | Elevation: 195 Feet | |
| Location: Napa County in California | River Group: Russian Napa | ||
| Issuance Time: | Oct 17 2021 at 7:31 AM PDT | Next Issuance: | Oct 18 2021 at 9:00 AM PDT |
| Monitor Stage: 16.0 Feet | Flood Stage: 18.0 Feet |
| Observed Data Credit | |
 | Raw streamflow data is provided by the US Geological Survey (USGS). |
Historical Stage/Flow Data |
|||
|
Water Year
|
Peak Discharge (cfs)
|
Stage (feet)
|
Date
|
| Most Recent 5 Years | |||
2020* |
696 |
4.31 |
Dec 7, 2019 |
2019* |
9,570 |
19.50 |
Feb 27, 2019 |
| 2018* | 3,970 |
11.31 |
Mar 22, 2018 |
| 2017* | 9,340 | 19.20 | Feb 7, 2017 |
2016* |
4,520 | 13.85 | Mar 6, 2016 |
| Historical High Stage/Flow Events (Period of Record - Jun 2000 to Present)* - Ranked by Flow | |||
| 2006* | 18,300 |
23.61 |
Dec 31, 2005 |
1986 |
16,900*** |
18.52 |
Feb 17, 1986 |
| 1997 | 13,100 | 17.70 | Jan 1, 1997 |
1956 |
12,600 |
15.17 |
Dec 22, 1955 |
| 1963 | 12,300 | 15.30 | Jan 31, 1963 |
| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ506) |
| Rest of Tonight: Becoming partly cloudy after midnight. Rain late in the evening. Lows in the upper 30s to lower 50s. West winds 10 to 20 mph. Monday: Sunny. Highs in the mid 50s to upper 60s. West winds 10 to 20 mph. Monday Night: Mostly clear except patchy fog after midnight. Lows in the mid 30s to upper 40s. Southwest winds 10 to 15 mph. Tuesday: Partly cloudy. Patchy fog in the morning. Highs in the upper 50s to lower 70s. Southeast winds 5 to 10 mph and becoming south 10 to 20 mph in the afternoon. Tuesday Night: Breezy. Rain likely in the evening, then rain after midnight. Lows in the 40s to mid 50s. South winds 10 to 20 mph increasing to southeast 20 to 30 mph after midnight. Wednesday: Breezy, rain. Highs in the mid 50s to lower 70s. Wednesday Night through Thursday Night: Rain likely. Lows in the 40s to upper 50s. Highs in the lower 60s to mid 70s. Friday: Mostly cloudy. A chance of rain. Highs in the upper 50s to lower 70s. Friday Night: Mostly cloudy. A slight chance of rain. Lows in the 40s to lower 50s. Saturday: Mostly cloudy. A chance of rain. Highs in the upper 50s to lower 70s. Saturday Night and Sunday: Rain likely. Lows in the 40s to mid 50s. Highs in the upper 50s to lower 70s. |
| Impacts - E19 Information | |
| 16.0 Feet | Monitor Stage. WFO Monterey/San Francisco Bay Area may issue a Flood Watch to cover Napa Valley region flood potential at this stage. |
| 18.0 Feet | Flood 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 Feet | Moderate 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 Feet | Major flooding throughout the upper Napa Valley with most roads inundated, making travel extremely difficult and unsafe. |
| 24.0 Feet | Disastrous 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. |
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