CNRFC - Hydrology - River Guidance - Graphical RVF

Start of River Group

Location:

NAVARRO RIVER - NAVARRO (NVRC1)

Latitude: 39.17º N	Longitude: 123.67º W	Elevation: 20 Feet
Location: Mendocino County in California		Bulletin Group: Russian Napa		River Group: Russian Napa

Issuance Time:

Jul 20 2025 at 7:13 AM PDT

Next Issuance:

Jul 21 2025 at 9:00 AM PDT

Action/Monitor: N/A

Minor Flood: 23.0 Feet

Moderate Flood: 30.0 Feet

Major Flood: 34.0 Feet

Plot Type:

Please Note:
1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.

Observed Data Credit
	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
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
2020	2,560	10.78	Dec 7, 2019
Historical High Stage/Flow Events (Period of Record - Oct 1950 to Present) - Ranked by Flow
1955	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

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
34.0 Feet	Significant flooding over the south bank approximately 1 mile east of Highway 1 will occur. Damage to property including 6 homes is possible. Expect closure of Highway 128. Motorists should use alternate routes.
30.0 Feet	Water will flow over the south bank of the river approximately 1 mile east of Highway 1, and begins to flood property in this area including six homes. Expect closure of Highway 128. Motorists should use alternate routes.
23.0 Feet	Flooding of Highway 128 approximately 5 miles east of Highway 1 is certain and the road will be closed. Motorists should use alternate routes.

Official 7 Day National Weather Service Forecast (CAZ112)

Tonight: Partly cloudy. Lows 47 to 57.

Monday: Mostly cloudy in the morning then becoming partly cloudy. Slight chance of rain in the afternoon. Highs 66 to 78.

Monday Night: Mostly cloudy. Slight chance of rain through the night. Patchy valley fog overnight. Lows 47 to 57.

Tuesday: Mostly cloudy. Patchy valley fog. Slight chance of rain. Highs 65 to 77.

Tuesday Night: Mostly cloudy. Patchy valley fog. Lows 47 to 57.

Wednesday: Partly cloudy. Patchy valley fog. Highs 68 to 80.

Wednesday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy valley fog. Slight chance of rain. Lows 47 to 57.

Thursday: Mostly cloudy in the morning then clearing. Patchy valley fog. Highs 68 to 81.

Thursday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy valley fog. Slight chance of rain. Lows 47 to 57.

Friday through Sunday: Partly cloudy. Patchy valley fog. Highs 68 to 83. Lows 47 to 57.

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.

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Verification - Historical Graphical RVF
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