CNRFC - Hydrology - Observed River/Reservoir Conditions

SACRAMENTO RIVER - HAMILTON CITY (HAMC1)

Latitude: 39.75º N	Longitude: 122.00º W	Elevation: 125 Feet
Location: Glenn County in California		Bulletin Group: Upper Sacramento		River Group: Upper Sacramento

Action/Monitor: 142.0 Feet

Minor Flood: 147.0 Feet

Moderate Flood: 149.2 Feet

Major Flood: 150.2 Feet

Plot Type:

Observed Data Credit
	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
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
147.2 Feet	Overflow begins on the east bank of the river, from near Wilson Landing Road to Highway 32.
146.8 Feet	Water at top of Irvine Finch boat ramp.
145.1 Feet	Water inundates Phase 2A restoration area north of Hwy 32 bridge inside of levee; touches toe of levee.
144.0 Feet	County Road 23 in Glenn County closes east of RD 2140 levee as a result of water on roadway.
137.7 Feet	West 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.

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