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		River Group: Upper Sacramento

Monitor Stage: 142.0 Feet

Flood Stage: 147.0 Feet

Observed Data Credit
	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
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
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ016)

Today: Sunny. Highs around 98. Southeast winds up to 10 mph.

Tonight: Clear. Lows 62 to 70. South winds up to 10 mph in the evening becoming light.

Wednesday: Sunny. Highs around 98. South winds up to 10 mph.

Wednesday Night: Clear. Lows 63 to 69. South winds up to 10 mph.

Thursday: Mostly sunny. Highs around 92. Southeast winds up to 10 mph.

Thursday Night: Mostly clear. Lows 58 to 64.

Independence Day: Sunny. Highs around 88.

Friday Night through Monday: Clear. Lows 56 to 66. Highs 88 to 95.

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.

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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