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

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SACRAMENTO RIVER - HAMILTON CITY (HAMC1)
Latitude: 39.75º NLongitude: 122.00º WElevation: 125 Feet
Location: Glenn County in CaliforniaRiver Group: Upper Sacramento
Monitor Stage: 142.0 FeetFlood Stage: 147.0 Feet

Observed Data Credit
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Raw streamflow data is provided by the California Department of Water Resources.
View CA DWR Data for this station location.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2025 111,900 148.23 Feb 5, 2025
2024 91,100 145.39 Feb 20, 2024
2023 105,300 146.79 Mar 15, 2023
2022 47,500 137.98 Oct 25, 2021
2021 13,300 130.71 Jan 29, 2021
 Historical High Stage/Flow Events (Period of Record - January 1927 to Present) - Ranked by Flow
1986 160,900 150.53 Feb 18, 1986
1970 160,700 150.80 Jan 24, 1970
1983 159,600 150.77 Mar 1, 1983
1997 155,300 150.92 Jan 2, 1997
1995 152,460** 150.65 Jan 10, 1995
1974 147,000 149.50 Jan 17, 1974
 * Datum changed from USED to NAVD88 on 10/01/2019. The difference is -0.8 ft and must be applied to all data before date to convert to NAVD88
 ** Estimated
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ016)
Tonight: Mostly clear. Lows around 52. Light winds.

Wednesday: Sunny. Highs 78 to 83. Light winds becoming south up to 10 mph in the afternoon.

Wednesday Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows around 54. South winds up to 10 mph.

Thursday: Mostly cloudy. A chance of rain showers and a slight chance of thunderstorms in the afternoon. Highs 74 to 79. Southeast winds up to 10 mph.

Thursday Night: Mostly cloudy. A chance of rain showers and a slight chance of thunderstorms in the evening, then a chance of rain after midnight. Lows 51 to 57. South winds up to 10 mph.

Friday: Mostly cloudy with rain showers likely and a chance of thunderstorms. Highs 67 to 72.

Friday Night: Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Lows 49 to 55.

Saturday: Mostly cloudy with rain showers likely and a chance of thunderstorms. Highs 63 to 70.

Saturday Night: Mostly cloudy with rain showers likely and a slight chance of thunderstorms. Lows 43 to 49.

Sunday: Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Highs 59 to 65.

Sunday Night: Partly cloudy with a slight chance of rain. Lows 41 to 47.

Monday through Tuesday: Mostly clear. Highs 66 to 76. Lows 41 to 47.
Flood Impacts
147.2 FeetFlood Stage - Overflow begins on the East bank of the river in Butte County, from near Wilson Landing Road to Highway 32.
146.8 FeetWater at top of Irvine Finch boat ramp.
145.1 FeetWater inundates Phase 2A restoration area north of Hwy 32 bridge inside of levee; touches toe of levee.
144.0 FeetCounty Road 23 in Glenn County closes east of RD 2140 levee as a result of water on roadway.
137.7 FeetWest Sacramento Avenue and River Road north of Big Chico Creek flood 1.5 hours after the Hamilton City gage reaches 137.7-138.0 feet.
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.