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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: | Sep 17 2021 at 8:08 AM PDT | Next Issuance: | Sep 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 Today: Sunny. Highs in the mid 60s to lower 80s. South winds 10 to 20 mph. Tonight: Mostly clear in the evening then becoming mostly cloudy. Lows in the 40s to mid 50s. Southwest winds 10 to 20 mph. Saturday: Mostly cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Highs in the lower 60s to mid 70s. Southwest winds 10 to 20 mph. Saturday Night: A chance of rain in the evening, then rain likely after midnight. Lows in the 50s to lower 60s. Southwest winds 10 to 20 mph. Chance of rain 70 percent. Sunday: Mostly cloudy in the morning then becoming sunny. Breezy. A slight chance of rain in the morning. Highs in the mid 60s to lower 80s. West winds 10 to 20 mph increasing to 20 to 30 mph in the afternoon. Chance of rain 20 percent. Sunday Night: Mostly clear. Breezy. Lows in the 40s to upper 50s. Monday through Tuesday: Mostly clear. Highs in the upper 70s to lower 90s. Lows in the 50s to lower 60s. Tuesday Night and Wednesday: Partly cloudy. Lows in the 50s. Highs in the 70s to 80s. Wednesday Night and Thursday: Mostly clear. Lows in the upper 40s to mid 50s. Highs in the 70s to 80s. |
| 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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