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 CaliforniaBulletin Group: Upper SacramentoRiver Group: Upper Sacramento
Action/Monitor: 142.0 FeetMinor Flood: 147.0 FeetModerate Flood: 149.2 FeetMajor Flood: 150.2 Feet

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

Historical Stage/Flow Data
Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months.
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2025 109,552 147.92 Feb 06, 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
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.
Official 7 Day National Weather Service Forecast   (CAZ016)
Today: Sunny. Highs around 50. Northwest winds up to 15 mph. Gusts up to 25 mph in the afternoon.

Tonight: Mostly clear. Lows 33 to 39. North winds 10 to 15 mph.

Friday: Areas of frost in the morning. Mostly sunny. Highs 48 to 54. North winds up to 10 mph with gusts to around 20 mph.

Friday Night: Mostly clear. Patchy fog and frost after midnight. Lows around 35. Light winds.

Saturday: Mostly sunny in the morning then becoming partly cloudy. Areas of frost in the morning. Highs around 51. Light winds.

Saturday Night: Mostly cloudy. Patchy fog. Lows around 38.

Sunday: Mostly cloudy. Highs 50 to 56.

Sunday Night: Mostly clear. Patchy fog. Lows around 38.

Monday: Partly cloudy. Patchy fog. Highs 51 to 59.

Monday Night: Mostly clear. Patchy fog. Lows 38 to 44.

Tuesday: Mostly sunny. Highs 54 to 62.

Tuesday Night: Partly cloudy. Patchy fog. Lows 41 to 47.

Wednesday: Mostly sunny. Highs 57 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.