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
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
2019
117,800
147.87
Feb 27, 2019
 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)
Today: Mostly cloudy. Highs 62 to 68. Southeast winds up to 15 mph.

Tonight: Mostly cloudy. A slight chance of rain showers after midnight. Lows around 47. Southeast winds up to 10 mph. Gusts up to 20 mph in the evening.

Saturday: Mostly cloudy. A slight chance of rain showers in the morning, then a chance of rain showers in the afternoon. Highs 57 to 63. Southeast winds up to 10 mph.

Saturday Night: Mostly cloudy with a chance of rain showers. Lows 46 to 52. Southeast winds up to 10 mph.

Sunday: Mostly cloudy. A slight chance of rain showers in the morning. Highs 62 to 67. Southeast winds up to 10 mph.

Sunday Night: Mostly clear. Lows around 48.

Monday: Sunny, warmer. Highs 76 to 82.

Monday Night through Tuesday Night: Mostly clear. Lows 51 to 57. Highs 76 to 84.

Wednesday through Thursday: Clear. Highs 83 to 90. Lows around 57.
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.