CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

MATTOLE RIVER - PETROLIA (MTOC1)

Latitude: 40.31º N	Longitude: 124.28º W	Elevation: 40 Feet
Location: Humboldt County in California		Bulletin Group: North Coast		River Group: North Coast

Issuance Time:

May 20 2025 at 7:41 AM PDT

Next Issuance:

May 21 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. Lows 40 to 50. North wind 10 to 20 mph.

Wednesday: Mostly sunny. Highs 63 to 78. North wind 5 to 15 mph.

Wednesday Night: Partly cloudy. Lows 40 to 50. North wind 5 to 15 mph.

Thursday: Sunny. Highs 56 to 71. Northwest wind around 10 mph.

Thursday Night: Mostly clear. Lows 40 to 50. North wind around 15 mph.

Friday: Mostly sunny. Highs 56 to 71. North wind around 15 mph.

Friday Night: Partly cloudy. Lows 40 to 50.

Saturday and Saturday Night: Mostly clear. Highs 62 to 77. Lows 40 to 50.

Sunday through Tuesday: Partly cloudy. Highs 62 to 77. Lows 42 to 52.

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.