CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

MATTOLE RIVER - ETTERSBURG (ETTC1)

Latitude: 40.14º N	Longitude: 123.99º W	Elevation: 579 Feet
Location: Humboldt County in California		Bulletin Group: North Coast		River Group: North Coast

Issuance Time:

Dec 08 2025 at 7:10 AM PST

Next Issuance:

Dec 08 2025 at 3:00 PM PST

Action/Monitor: N/A

Minor Flood: N/A

Moderate Flood: N/A

Major Flood: N/A

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.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ104)

Today: Partly cloudy until early afternoon then becoming mostly cloudy. Patchy fog in the morning. Highs 56 to 66. Northwest wind around 10 mph.

Tonight: Mostly cloudy. Patchy fog. Lows 41 to 51. Northwest wind around 5 mph.

Tuesday: Partly cloudy. Patchy fog in the morning. Slight chance of drizzle in the afternoon. Highs 56 to 66. Northwest wind around 5 mph.

Tuesday Night: Partly cloudy. Slight chance of drizzle and patchy fog. Lows 44 to 54. North wind around 5 mph.

Wednesday: Mostly sunny. Slight chance of drizzle. Highs 57 to 67. North wind around 10 mph.

Wednesday Night through Thursday Night: Partly cloudy. Lows 42 to 52. Highs 56 to 68.

Friday: Sunny. Highs 58 to 71.

Friday Night: Partly cloudy. Lows 42 to 52.

Saturday and Saturday Night: Partly cloudy. Slight chance of drizzle. Highs 57 to 67. Lows 42 to 52.

Sunday: Mostly cloudy. Slight chance of drizzle. Highs 54 to 64.

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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To view other verification locations, use our Historical Graphical River Forecast Interface.