CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

MCCLOUD RIVER - SHASTA LAKE (MSSC1)

Latitude: 40.95º N	Longitude: 122.22º W	Elevation: 1100 Feet
Location: Shasta County in California		Bulletin Group: Upper Sacramento		River Group: Upper Sacramento

Issuance Time:

Dec 26 2025 at 1:22 PM PST

Next Issuance:

Dec 27 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 California Department of Water Resources. View California Department of Water Resources Data for this station location.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ013)

Tonight: Mostly cloudy. Colder. At lower elevations, rain early in the evening, then a chance of rain in the late evening and early morning. A slight chance of rain late in the night. At higher elevations, rain and heavy snow early in the evening, then a chance of rain and heavy snow in the late evening and early morning. A slight chance of rain late in the night. Lows 24 to 38 higher elevations and 34 to 39 lower elevations. No snow accumulation lower elevations and up to 3 inches higher elevations. Snow level 4500 feet. Prevailing southwest winds up to 10 mph with gusts to around 25 mph.

Saturday: Partly cloudy in the morning then clearing. At lower elevations, a slight chance of rain in the morning. At higher elevations, a slight chance of rain and snow in the morning. Highs 34 to 49 higher elevations and 46 to 52 lower elevations. Snow level 3000 feet. Light winds.

Saturday Night: Clear in the evening then becoming partly cloudy. Lows 21 to 36 higher elevations and 31 to 38 lower elevations. Prevailing north winds up to 10 mph.

Sunday: Mostly sunny. Not as cool. Highs 37 to 52 higher elevations and 50 to 56 lower elevations. Prevailing north winds up to 10 mph with gusts to around 25 mph.

Sunday Night: Clear. Lows 25 to 40 higher elevations and 34 to 42 lower elevations. Prevailing north winds up to 10 mph.

Monday: Sunny. Not as cool. Highs 44 to 59.

Monday Night: Clear. Lows 27 to 42.

Tuesday: Mostly sunny. Highs 46 to 61.

Tuesday Night: Clear. Lows 27 to 42.

Wednesday and Wednesday Night: Mostly clear. Highs 46 to 61. Lows 27 to 42.

New Years Day: Mostly cloudy with a chance of rain and snow. Highs 40 to 55.

Thursday Night and Friday: Rain and snow likely. Light snow accumulations possible. Lows 30 to 42. Highs 37 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 Sacramento 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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