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
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
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
2020
28,100
134.20
Jan 27, 2020
 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
--
150.65
Jan 10, 1995
 * 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
Location Photographs
ESRI™ Locator Map
Flood Impacts
147.2 FeetOverflow begins on the east bank of the river, 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)
Tonight: Mostly cloudy in the evening then becoming partly cloudy. A chance of rain showers early in the evening. A slight chance of thunderstorms in the evening. A slight chance of rain showers in the late evening and overnight. Lows 46 to 51. South winds around 10 mph with gusts to around 20 mph in the evening becoming light.

Tuesday: Partly cloudy in the morning then clearing. Highs 70 to 76. North winds up to 10 mph.

Tuesday Night: Clear. Lows around 51. Light winds.

Wednesday: Sunny. Highs 76 to 82. North winds up to 10 mph with gusts to around 20 mph.

Wednesday Night: Clear. Lows 51 to 56. North winds up to 10 mph.

Thursday: Sunny. Highs 82 to 87.

Thursday Night: Mostly cloudy. Lows around 59.

Friday: Mostly sunny. Highs 83 to 88.

Friday Night: Partly cloudy. Lows around 57.

Saturday through Sunday: Mostly clear. Highs 78 to 85. Lows around 56.

Sunday Night and Monday: Clear. Lows 54 to 60. Highs 80 to 90.
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.