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:

Jul 06 2025 at 7:36 AM PDT

Next Issuance:

Jul 07 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: Mostly clear. Lows 53 to 63. North wind around 10 mph shifting to the east overnight.

Monday: Sunny. Highs 72 to 87. Southwest wind around 5 mph.

Monday Night: Partly cloudy. Lows 47 to 57. Southwest wind around 5 mph.

Tuesday: Mostly sunny. Highs 66 to 81. Southwest wind around 5 mph.

Tuesday Night and Wednesday: Partly cloudy. Lows 47 to 57. Highs 74 to 89. North wind 5 to 15 mph.

Wednesday Night and Thursday: Partly cloudy. Lows 51 to 61. Highs 76 to 91.

Thursday Night through Saturday: Mostly clear. Lows 51 to 61. Highs 81 to 96.

Saturday Night and Sunday: Partly cloudy. Lows 50 to 60. Highs 75 to 90.

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.