National Weather Service California-Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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NAVARRO RIVER - NAVARRO (NVRC1)
Latitude: 39.17º NLongitude: 123.67º WElevation: 20 Feet
Location: Mendocino County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Action: N/A Minor Flood: 23.0 FeetModerate Flood: 30.0 FeetMajor Flood: 34.0 Feet

Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View US Geological Survey (USGS) Data for this station location.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2025
18,000
28.80
Feb 4, 2025
2024
12,400
23.54
Feb 5, 2024
2023
14,100
25.56
Jan 8, 2023
2022
9,980
21.36
Oct 24, 2021
2021
801
6.30
Feb 2, 2021
 Historical High Stage/Flow Events (Period of Record - Oct 1950 to Present) - Ranked by Flow
1956
64,500
40.60
Dec 22, 1955
2006
62,000
39.81
Dec 31, 2005
1974
61,000
39.13
Jan 16, 1974
1965
52,100
38.64
Dec 22, 1964
1995
51,400
38.49
Jan 09, 1995
1986
51,400
38.49
Feb 17, 1986
Location Photographs
ESRI™ Locator Map
Flood Impacts
34.0 FeetSignificant flooding across the south/left bank one mile east of Highway 1. Damage to six homes in this area along the river is possible. Flooding and full closure of Highway 128.
30.0 FeetFlooding of six properties on the south/left bank one mile east of Highway 1. Flooding and full closure of Highway 128.
23.0 FeetFlooding of Highway 128 five miles east of Highway 1 will lead to a full highway closure.
17.0 FeetPotential flooding of Highway 128 nine miles east of Highway 1. Roadway flooding could result in a highway closure.
4.5 FeetPotential flooding of Highway 128 within a quarter mile of the Highway 1 junction. This occurs only when a sandbar obstructs river flow into the ocean and causes river levels to rise. Roadway flooding could result in a highway closure.
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 Eureka 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.