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:

Jun 30 2025 at 6:45 AM PDT

Next Issuance:

Jul 01 2025 at 9:00 AM PDT

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)

Tonight: Partly cloudy. Slight chance of thunderstorms in the evening. Lows 53 to 63. North wind 5 to 15 mph.

Tuesday: Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs 75 to 90. Northwest wind 5 to 15 mph.

Tuesday Night: Partly cloudy. Lows 49 to 59. North wind 5 to 15 mph with gusts at higher elevations to around 30 mph.

Wednesday: Mostly sunny. Highs 73 to 88. North wind around 15 mph.

Wednesday Night and Thursday: Partly cloudy. Lows 47 to 57. Highs 73 to 88. North wind 10 to 20 mph.

Thursday Night through Friday Night: Partly cloudy. Lows 46 to 56. Highs 68 to 83.

Saturday: Sunny. Highs 70 to 85.

Saturday Night through Monday: Partly cloudy. Lows 47 to 57. Highs 72 to 87.

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
Month:	Day:	Year:	Cycle:
To view other verification locations, use our Historical Graphical River Forecast Interface.