CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

SOUTH FORK TRINITY RIVER - HYAMPOM (HYMC1)

Latitude: 40.65º N	Longitude: 123.49º W	Elevation: 1211 Feet
Location: Trinity County in California		Bulletin Group: North Coast		River Group: Klamath

Issuance Time:

Dec 27 2025 at 9:16 AM PST

Next Issuance:

Dec 28 2025 at 9:00 AM 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 (CAZ108)

Today: Mostly sunny. Highs 44 to 59.

Tonight: Mostly clear. Lows 29 to 39.

Monday: Sunny. Highs 50 to 63.

Monday Night: Mostly clear. Lows 33 to 43.

Tuesday: Sunny. Highs 52 to 64.

Tuesday Night and Wednesday: Partly cloudy. Lows 33 to 43. Highs 50 to 64.

Wednesday Night: Mostly cloudy. Chance of rain. Lows 34 to 44.

New Years Day: Mostly cloudy. Rain likely. Highs 44 to 59.

Thursday Night and Friday: Rain and snow likely. Lows 34 to 44. Highs 44 to 59.

Friday Night and Saturday: Mostly cloudy. Chance of rain and snow. Lows 32 to 42. Highs 41 to 55.

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.