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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: | Mar 20 2023 at 1:54 PM PDT | Next Issuance: | Mar 21 2023 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 | |||
2021* |
178 | 2.26 | Jan 27, 2021 |
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 |
| 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: Rain likely late in the evening, then rain after midnight. Lows in the 30s to mid 40s. South winds 5 to 10 mph and becoming east 10 to 20 mph after midnight. Tuesday: Breezy, rain. Highs in the mid 40s to lower 50s. East winds 20 to 30 mph. Tuesday Night: Rain likely. Lows in the 30s to upper 40s. East winds 10 to 20 mph. Wednesday: Mostly cloudy. A chance of showers. Highs in the 50s. Northeast winds 5 to 10 mph and becoming northwest in the afternoon. Chance of showers 50 percent. Wednesday Night: Mostly cloudy. Lows in the 30s to upper 40s. West winds 5 to 15 mph. Thursday: Mostly cloudy in the morning then becoming partly cloudy. Highs in the mid 50s to lower 60s. Thursday Night and Friday: Partly cloudy. Lows in the 30s to mid 40s. Highs in the 50s to lower 60s. Friday Night through Saturday Night: Mostly clear. Lows in the 30s to lower 40s. Highs in the 50s to lower 60s. Sunday: Partly cloudy. Areas of frost. A slight chance of rain. Highs in the 50s. Sunday Night and Monday: Mostly cloudy. A chance of rain. Lows in the upper 30s to mid 40s. Highs in the upper 40s to mid 50s. |
| 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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