Sacramento River at Hamilton City

Highest listed crest 148.68 ftFlood stage 147.0 ft8 crests since 2020

The Sacramento River at Hamilton City crested above flood stage 2 times among the 8 crests the National Weather Service lists from 2020 to 2026. The highest, 148.68 ft on January 15, 2023, was minor flooding, 1.68 feet above flood stage. 2 other gauges on the Sacramento River crested above flood stage within a week of it.

The gauge

Highest listed crest: 148.68 ft; January 15, 2023
Flood stage: 147.0 ft; Major flooding from 150.2 ft
Crests at major: 0; 2 above flood stage
Most recent flood crest: February 5, 2025; 148.23 ft, minor flooding
Location: Glenn County; Near Chico (9.6 mi)
Identifiers: NWS HAMC1; No USGS station

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Sacramento River at Hamilton City

Action stage	142.0	3	Feb 25, 2026	The level at which the NWS or its partners begin to take action
Flood stage (minor)	147.0	2	Feb 5, 2025	Minimal or no property damage, but possibly some public threat
Moderate flood stage	149.2	0	—	Some inundation of structures and roads near the stream
Major flood stage	150.2	0	—	Extensive inundation of structures and roads

Every listed crest

8 crests from 2020 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.
34 crests measured on an earlier gauge datum are left out: 146.30 ft on Dec 23, 1955; 146.90 ft on Jan 16, 1956; 149.20 ft on Feb 25, 1958; 143.30 ft on Feb 9, 1960; 147.50 ft on Jan 6, 1965; 144.70 ft on Jan 31, 1967; and more.

Highest crests

Highest listed crests, Sacramento River at Hamilton City

1	Jan 15, 2023	148.68	+1.68	Minor	—
2	Feb 5, 2025	148.23	+1.23	Minor	—
3	Mar 15, 2023	146.79	−0.21	Action	—
4	Feb 25, 2026	146.68	−0.32	Action	—
5	Feb 20, 2024	145.39	−1.61	Action	—
6	Oct 25, 2021	137.98	−9.02	Below flood stage	47,500
7	Jan 24, 2020	134.20	−12.80	Below flood stage	28,100
8	Jan 29, 2021	130.71	−16.29	Below flood stage	13,300

The worst floods along the Sacramento River

For this gauge's highest crests, the other gauges on the Sacramento River that crested above flood stage within a week.

January 15, 2023: 148.68 ft here, minor flooding

Tehama BridgeCA · Jan 14, 2023 · 210.91 ft · Minor
Ord FerryCA · Jan 15, 2023 · 114.30 ft · Minor

February 5, 2025: 148.23 ft here, minor flooding

Red Bluff Diversion DamCA · Feb 5, 2025 · 258.99 ft · Moderate · its highest
Tehama BridgeCA · Feb 5, 2025 · 216.59 ft · Moderate
Vina-Woodson BridgeCA · Feb 5, 2025 · 188.69 ft · Minor · its highest
Ord FerryCA · Feb 6, 2025 · 116.61 ft · Minor
Bend BridgeCA · Feb 5, 2025 · 29.10 ft · Minor

Gauges on the Sacramento River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Sacramento River

Bend Bridge	CA	27.0	38.90 ft, Feb 28, 1940	6
Colusa Weir	CA	70.1	70.60 ft, Mar 1, 1940	0
Hamilton City this gauge	CA	147.0	148.68 ft, Jan 15, 2023	0
Ord Ferry	CA	114.0	116.98 ft, Feb 19, 2017	0
Red Bluff Diversion Dam	CA	255.5	258.99 ft, Feb 5, 2025	0
Tehama Bridge	CA	209.5	218.51 ft, Jan 21, 1993	1
Tisdale Weir	CA	51.6	53.50 ft, Mar 1, 1940	0
Verona	CA	41.3	42.11 ft, Feb 20, 1986	0
Vina-Woodson Bridge	CA	183.0	188.69 ft, Feb 5, 2025	0

Other gauges in Glenn County

Flood gauges in Glenn County

Ord Ferry	114.0	116.98 ft, Feb 19, 2017	0

Glenn County: every hazard · River floods across the country · California

NOAA National Water Prediction Service, gauge HAMC1, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.