National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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COTTONWOOD CREEK - COTTONWOOD (CWAC1)
Latitude: 40.39º NLongitude: 122.24º WElevation: 364 Feet
Location: Tehama County in CaliforniaBulletin Group: Upper SacramentoRiver Group: Upper Sacramento
Issuance Time: Jan 06 2026 at 1:41 PM PSTNext Issuance: Jan 07 2026 at 9:00 AM PST
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A

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
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Raw streamflow data is provided by the US Geological Survey (USGS).
View US Geological Survey (USGS) Data for this station location.

Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ015)
Tonight: Mostly cloudy. Patchy fog through the night. A slight chance of rain late in the night. Lows 39 to 47. Light winds.

Wednesday: Mostly cloudy in the morning then becoming partly cloudy. A slight chance of rain. Patchy fog through the day. Highs around 52. Light winds becoming south up to 10 mph in the afternoon.

Wednesday Night: Mostly cloudy with a chance of rain in the evening, then partly cloudy with a slight chance of rain after midnight. Patchy fog through the night. Colder. Lows 30 to 37. Southwest winds up to 10 mph in the evening becoming light.

Thursday: Areas of frost and patchy fog in the morning. Mostly sunny. Highs around 49. North winds up to 10 mph. Gusts up to 20 mph in the afternoon.

Thursday Night: Mostly clear. Areas of frost after midnight. Lows 30 to 36. North winds up to 10 mph with gusts to around 20 mph.

Friday: Mostly sunny. Widespread frost. Highs 50 to 56.

Friday Night: Partly cloudy. Areas of frost. Lows around 34.

Saturday: Mostly cloudy. Areas of frost. Highs 49 to 55.

Saturday Night and Sunday: Mostly cloudy. Lows around 38. Highs 53 to 60.

Sunday Night: Mostly clear. Lows around 40.

Monday: Partly cloudy. Highs 56 to 64.

Monday Night and Tuesday: Mostly clear. Lows around 44. Highs 58 to 66.
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.